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Model S4000CH
Intelligent Sensor for
Combustible Gas Detection
The information and technical data disclosed in
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized in writing by General
Monitors.
Instruction Manual
10-12
General Monitors reserves the right to change
published specifications and designs without
prior notice.
MANS4000CH
Part No.
Revision
MANS4000CH
G/10-12
Model S4000CH
This page intentionally left blank
i
Model S4000CH
Table of Contents
TABLE OF FIGURES ..................................................................................................................VI
TABLE OF TABLES...................................................................................................................VII
QUICK START GUIDE ................................................................................................................. 1
Mounting and Wiring ...............................................................................................................................1
Tools Required...........................................................................................................................1
Terminal Connections .............................................................................................................................3
1.0 INTRODUCTION .................................................................................................................... 5
1.1
1.2
1.3
Protection for Life .......................................................................................................................5
Special Warnings .......................................................................................................................5
System Integrity Verification ......................................................................................................5
2.0 PRODUCT DESCRIPTION..................................................................................................... 7
2.1
General Description ...................................................................................................................7
3.0 INSTALLATION...................................................................................................................... 9
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
Receipt of Equipment.................................................................................................................9
Tools Required...........................................................................................................................9
Choosing Product Locations ......................................................................................................9
3.3.1 Remote Mounting of the Sensor from the Electronics ................................................10
Mounting and Wiring ................................................................................................................10
Terminal Connections ..............................................................................................................12
3.5.1 Terminal Block TB1 – Sensor Connections ................................................................14
3.5.2 Terminal Block TB2 – Power and Signal Connections ...............................................14
3.5.3 DC Power and COM Connections ..............................................................................16
3.5.4 Analog Signal Connections.........................................................................................16
3.5.5 ARGC Terminal Connections......................................................................................17
3.5.6 Terminal Block TB3 – Relay Connections ..................................................................17
3.5.7 European Union (EU) Approved Applications.............................................................18
3.5.8 Cable Termination in the Non-Hazardous Area..........................................................18
Maintaining the X/P Integrity ....................................................................................................19
Start-Up Checklist ....................................................................................................................20
Start-Up ....................................................................................................................................20
Relay Reset..............................................................................................................................20
User Selectable Options ..........................................................................................................21
Available Separate Purchase Options .....................................................................................21
3.11.1 Model S4000CH User Menu Structure .......................................................................22
3.11.2 Calibration Level .........................................................................................................23
3.11.3 Warning Relay Settings ..............................................................................................23
3.11.4 Alarm Relay Settings...................................................................................................23
3.11.5 Modbus Channel 1 Settings........................................................................................24
3.11.6 Modbus Channel 2 Settings........................................................................................24
HART/Modbus SELECT...........................................................................................................25
Gas Check Mode .....................................................................................................................25
3.13.1 Calibration Check........................................................................................................25
Calibration ................................................................................................................................26
ii
Model S4000CH
3.15
3.16
3.17
3.18
3.19
3.14.1 Calibration Procedure .................................................................................................26
3.14.2 Aborting Calibration.....................................................................................................27
3.14.3 Adjustable Calibration Level .......................................................................................28
3.14.4 Remaining Sensor Life................................................................................................28
3.14.5 Initializing the Remaining Sensor Life.........................................................................28
Calibration Equipment..............................................................................................................28
3.15.1 Portable Purge Calibrator ...........................................................................................28
Remote Gas Calibrator ............................................................................................................29
ARGC Gas Control...................................................................................................................29
Automatic Remote Gas Calibrator (ARGC) .............................................................................30
Calibration Using the ARGC ....................................................................................................30
4.0 MAINTENANCE ................................................................................................................... 32
4.1
4.2
General Maintenance...............................................................................................................32
Storage.....................................................................................................................................32
5.0 TROUBLESHOOTING ......................................................................................................... 33
5.1
5.2
Fault Codes & Their Remedies................................................................................................33
5.1.1 F2 Failed to Complete Calibration ..............................................................................33
5.1.2 F3 Flash Checksum Error ...........................................................................................33
5.1.3 F4 Sensor Error...........................................................................................................33
5.1.4 F5 Unused...................................................................................................................34
5.1.5 F6 Low Supply Voltage ...............................................................................................34
5.1.6 F7 EEPROM Error ......................................................................................................34
5.1.7 F8 Failure to Complete Setup .....................................................................................34
5.1.8 F9 Gas Check Period Exceeded.................................................................................34
5.1.9 F10 Switch Error .........................................................................................................34
5.1.10 F11 Internal Error ........................................................................................................35
5.1.11 F12 ARGC fault...........................................................................................................35
General Monitors’ Offices.........................................................................................................35
6.0 MODBUS INTERFACE ........................................................................................................ 36
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Baud Rate ................................................................................................................................36
Data Format .............................................................................................................................36
Modbus Read Status Protocol (Query/Response)...................................................................36
6.3.1 Modbus Read Query Message ...................................................................................36
6.3.2 Modbus Read Response Message.............................................................................36
Modbus Write Command Protocol (Query/Response) ............................................................37
6.4.1 Modbus Write Query Message ...................................................................................37
6.4.2 Modbus Write Response Message .............................................................................37
Function Codes Supported ......................................................................................................37
Exception Responses and Exception Codes ...........................................................................37
6.6.1 Exception Response ...................................................................................................37
6.6.2 Exception Code...........................................................................................................38
S4000CH Command Register Locations .................................................................................39
S4000CH Command Register Details .....................................................................................41
6.8.1 Analog (00h)................................................................................................................41
6.8.2 Mode (01h)..................................................................................................................41
6.8.3 Status/Error (03h)........................................................................................................42
6.8.4 Unit Type (04h) ...........................................................................................................42
6.8.5 Software Revision (05h)..............................................................................................42
6.8.6 Status Block (06h).......................................................................................................42
iii
Model S4000CH
6.8.7
6.8.8
6.8.9
6.8.10
6.8.11
6.8.12
6.8.13
6.8.14
6.8.15
6.8.16
6.8.17
6.8.18
6.8.19
6.8.20
6.8.21
6.8.22
6.8.23
6.8.24
6.8.25
6.8.26
6.8.27
6.8.28
6.8.29
6.8.30
6.8.31
6.8.32
6.8.33
6.8.34
6.8.35
6.8.36
6.8.37
6.8.38
6.8.39
6.8.40
6.8.41
6.8.42
6.8.43
6.8.44
6.8.45
6.8.46
6.8.47
6.8.48
6.8.49
6.8.50
6.8.51
6.8.52
6.8.53
6.8.54
Analog Value (06h) .....................................................................................................42
Mode & Error (07h) .....................................................................................................43
Error & Sensor Life (08h) ............................................................................................43
Display (0x09h & 0x0Ah) ............................................................................................43
Serial Number (0Bh/0Ch)............................................................................................44
Alarm Settings (0Dh)...................................................................................................44
Warn Settings (0Eh)....................................................................................................44
Com1 Address (0Fh)...................................................................................................45
Com1 Baud Rate (10h) ...............................................................................................45
Com1 Data Format (11h) ............................................................................................45
Com2 Address (12h) ...................................................................................................46
Com2 Baud Rate (13h) ...............................................................................................46
Com2 Data Format (14h) ............................................................................................47
Calibration Level (15h)................................................................................................47
Reset Alarms (16h) .....................................................................................................47
Sensor Life (17h).........................................................................................................47
HazardWatch (Co – Calibration Output) (19h)............................................................48
ARGC (1Ah) ................................................................................................................48
PLC Remote Gas Calibration......................................................................................48
HART Enable (1Dh) ....................................................................................................48
HART Test (1Eh).........................................................................................................48
Abort Calibration (1Fh)................................................................................................49
Total Receive Errors (20h)..........................................................................................49
Bus Activity Rate % (21h) ...........................................................................................49
Function Code Errors (22h) ........................................................................................49
Starting Address Errors (23h) .....................................................................................49
Number of Register Errors (24h).................................................................................49
RXD CRC Errors Hi (25h) ...........................................................................................49
RXD CRC Errors Lo (Same as Hi) (26h) ....................................................................49
Parity Errors (27h).......................................................................................................49
Overrun errors (28h) ...................................................................................................50
Framing Errors (29h)...................................................................................................50
Total Software CH1 Errors (2Ah) ................................................................................50
New Sensor Calibration (2Bh) ....................................................................................50
Clear Hardware Errors (2Ch) ......................................................................................50
Clear Communication Errors (2Dh).............................................................................50
User Information (60h to 6Fh).....................................................................................54
Total Receive Errors (70h)..........................................................................................54
Bus Activity Rate % (71h) ...........................................................................................54
Function Code Errors (72h) ........................................................................................54
Starting Address Errors (73h) .....................................................................................54
Number of Register Errors (74h).................................................................................54
RXD CRC Errors Hi (75h) ...........................................................................................55
RXD CRC Errors Lo (Same as Hi) (76h) ....................................................................55
Parity Errors (77h).......................................................................................................55
Overrun Errors (78h) ...................................................................................................55
Framing Errors (79h)...................................................................................................55
Total software CH1 errors (7Ah) .................................................................................55
7.0 APPENDIX............................................................................................................................ 56
7.1
7.2
7.3
Warranty...................................................................................................................................56
Principle of Operation...............................................................................................................56
Specifications ...........................................................................................................................57
iv
Model S4000CH
7.4
7.5
7.6
7.7
7.3.1 System Specifications .................................................................................................57
7.3.2 Mechanical Specifications...........................................................................................57
7.3.3 Electrical Specifications ..............................................................................................57
7.3.4 Cable Requirements ...................................................................................................58
7.3.5 Remote Sensor Cable Lengths...................................................................................59
7.3.6 Environmental Specifications......................................................................................60
Approvals .................................................................................................................................60
Sensitivities to Other Gases.....................................................................................................60
Spare Parts and Accessories...................................................................................................62
7.6.1 Sensors .......................................................................................................................62
7.6.2 Sensor Housing...........................................................................................................62
7.6.3 Sensor Accessories ....................................................................................................62
7.6.4 Calibration Equipment.................................................................................................62
7.6.5 S4000CH Replacement Parts.....................................................................................63
7.6.6 Recommended Spare Parts for One (1) Year ............................................................63
FM Approval.............................................................................................................................64
v
Model S4000CH
Table of Figures
Figure 1: Outline and Mounting Dimensions in inches ........................................................................................... 1
Figure 2: Outline and Mounting Dimensions (ARGC) in inches ............................................................................. 1
Figure 3: Sensor Remote Installation in inches...................................................................................................... 2
Figure 4: ARGC Remote Installation ...................................................................................................................... 2
Figure 5: Spring Type Terminal Block Operation ................................................................................................... 3
Figure 6: Screw Type Terminal Block Operation.................................................................................................... 3
Figure 7: Model S4000CH Intelligent Sensor ......................................................................................................... 7
Figure 8: Model S4000CH Intelligent Sensor with ARGC ...................................................................................... 8
Figure 9: ARGC Remote Junction Box Assembly (P/N 80155-1) .......................................................................... 8
Figure 10: Outline and Mounting Dimensions in inches ....................................................................................... 11
Figure 11: Outline and Mounting Dimensions (ARGC) in inches ......................................................................... 11
Figure 12: S4000CH Terminal Block Locations ................................................................................................... 13
Figure 13: Remote Junction Box Terminal Block ................................................................................................. 13
Figure 14: Spring Type Terminal Block Operation ............................................................................................... 14
Figure 15: Screw Type Terminal Block Operation................................................................................................ 15
Figure 16: Wire Strip Length................................................................................................................................. 15
Figure 17: Relay Protection for DC and AC Loads............................................................................................... 18
Figure 18: Relay Reset......................................................................................................................................... 21
Figure 19: User Menu Structure ........................................................................................................................... 22
Figure 20: Calibration Check ................................................................................................................................ 25
Figure 21: Automatic Calibration Mode ................................................................................................................ 27
Figure 22: Calibration in Progress Mode .............................................................................................................. 27
Figure 23: Calibration Complete Mode................................................................................................................. 27
Figure 24: Remote Gas Calibrator (RGC, P/N 80153-1)...................................................................................... 29
Figure 25: ARGC Gas Control (P/N 80154-1) ...................................................................................................... 29
Figure 26: Calibration Complete Mode................................................................................................................. 31
vi
Model S4000CH
Table of Tables
Table 1: TB2 Power and Signal Connections....................................................................................................... 14
Table 2: Ground or Common Connections........................................................................................................... 16
Table 3: Power Connections ................................................................................................................................ 16
Table 4: Analog Signal Connections .................................................................................................................... 17
Table 5: Alarm Relay Connections ....................................................................................................................... 17
Table 6: Warn Relay Connections........................................................................................................................ 17
Table 7: Fault Relay Connections ........................................................................................................................ 18
Table 8: GM Locations.......................................................................................................................................... 35
Table 9: Data Format............................................................................................................................................ 36
Table 10: Exception Codes .................................................................................................................................. 38
Table 11: Com1 Baud Rate .................................................................................................................................. 45
Table 12: Com1 Data Format ............................................................................................................................... 45
Table 13: Current Chart........................................................................................................................................ 46
Table 14: Com2 Baud Rate .................................................................................................................................. 47
Table 15: Com2 Data Format ............................................................................................................................... 47
Table 16: 24 VDC Cable Lengths with Relays ..................................................................................................... 58
Table 17: 24 VDC Cable Lengths w/o Relays ...................................................................................................... 58
Table 18: ARGC Cable Lengths ........................................................................................................................... 59
Table 19: Analog Output Cable Lengths .............................................................................................................. 59
Table 20: Sensor Cable Lengths .......................................................................................................................... 59
Table 21: Chemical List ........................................................................................................................................ 61
vii
Model S4000CH
Quick Start Guide
Mounting and Wiring
Tools Required
“5mm” Allen head wrench to remove enclosure lid (included with gas detector).
Flat-head screwdriver maximum 3/16” (5 mm) width for terminal block connections
(included with gas detector).
Adjustable wrench for conduit or cable gland connections (not included).
Information on Class I Division 1 wiring methods can be found in NEC Article 501.10.
Figure 1: Outline and Mounting Dimensions in inches
Figure 2: Outline and Mounting Dimensions (ARGC) in inches
1
Model S4000CH
Figure 3: Sensor Remote Installation in inches
Figure 4: ARGC Remote Installation
2
Model S4000CH
Terminal Connections
The terminal blocks (TB) are located inside the housing and can be accessed by removing the
cover. A label on the inside of the housing cover provides details of all the terminal
connections.
WARNING:
Do not connect +24 VDC to TB1. Damage to the electronics or sensor may
result.
It is recommended that a minimum three-wire shielded cable be used for making the power
and 0-20mA Output connection on TB2 of the S4000CH. It is also recommended that separate
two-wire shielded twisted pair cables be used for making the Modbus connections. The spring
type terminal block accepts 14 AWG to 20 AWG and the screw type terminal block accepts 12
AWG to 18 AWG stranded or solid wire. Each wire should be stripped before wiring the
S4000CH intelligent sensor. To connect wiring to the spring type terminal block, insert a
screwdriver into the orange tab and press down (Figure 5), opening the terminal. Insert the wire
into the terminal and release the orange tab, clamping the wire in the terminal. Check the hold
of the wire by GENTLY tugging it to ensure it is locked in.
Ground
+24 VDC
Figure 5: Spring Type Terminal Block Operation
To connect wiring to the screw type terminal block, (Figure 6) use a screwdriver to loosen the
top screw counter clockwise. Insert the wire into the terminal and tighten the top screw
clockwise. Check the hold of the wire by GENTLY tugging it to ensure it is locked in.
Ground
+24 VDC
Figure 6: Screw Type Terminal Block Operation
3
Model S4000CH
NOTE: Power must remain disconnected until all other wiring connections have been made.
The maximum distance between the S4000CH and the power supply is 3430 feet or 1040
meters (each cable run should be as short as possible). See Section 7.3.4 for cable length
specifications.
Connect +24 VDC to TB2, position 9. Connect the ground or common to TB2, position 8.
To connect the analog signal, please refer to Section 3.5.4.
General Monitors recommends that the S4000CH Intelligent Sensor be calibrated one hour
after start-up, and that the calibration be checked at least every ninety (90) days to ensure
system integrity.
The instrument is now ready to operate. Please consult the manual for more information on the
instrument’s many features.
NOTE: If you have any problems in the set-up or testing of the detector, please refer to the
“Troubleshooting Section”, or call the factory direct. See Section 5.2.
4
Model S4000CH
1.0 Introduction
1.1 Protection for Life
General Monitors’ mission is to benefit society by providing solutions through industry leading
safety products, services, and systems that save lives and protect capital resources from the
dangers of hazardous flames, gases, and vapors.
This manual provides instruction for installing and operating General Monitors’ Model
S4000CH for combustible gas detection. While the S4000CH is easy to install and operate,
this manual should be read in full and the information contained herein understood before
attempting to place the system in service.
The safety products you have purchased should be handled carefully and installed, calibrated,
and maintained in accordance with the respective product instruction manual. Remember
these products are for your safety.
1.2 Special Warnings
The Model S4000CH Intelligent Sensor contains components, which can be damaged by
static electricity. Special care must be taken when wiring the system to ensure that only the
connection points are touched.
WARNING: Toxic, combustible and flammable gases and vapors are very dangerous. Extreme
caution should be used when these hazards are present.
1.3 System Integrity Verification
Commissioning Safety Systems
Before power up, verify wiring, terminal connections and stability of mounting for all integral
safety equipment including, but not limited to:
• Power supplies
• Control modules
• Field detection devices
• Signaling / output devices
• Accessories connected to field and signaling devices
• Remote Gas Calibrator (RGC) / Automatic Remote Gas Calibrator (ARGC)
After the initial application of power (and any factory specified warm-up period) to the safety
system, verify that all signal outputs, to and from devices and modules, are within the
manufacturer’s specifications. Initial testing should be performed per the manufacturer’s
recommendations and instructions.
Proper system operation should be verified by performing a full, functional test of all
component devices of the safety system, ensuring that the proper levels of alarming occur.
Fault/Malfunction circuit operation should be verified.
5
Model S4000CH
Periodic Testing of Field Devices
Periodic testing/calibrating should be performed per the manufacturer’s recommendations and
instructions. Testing/calibrating procedures should include, but not be limited to:
• Verify integrity of all optical surfaces and devices
When testing produces results outside of the manufacturer’s specifications, replacement of the
suspect device(s) should be performed as necessary. Maintenance intervals should be
independently established through a documented procedure, including a maintenance log
maintained by plant personnel or third party testing services.
Periodic System Verification
The following system verifications should be performed at least annually:
Verify wiring, terminal connections and stability of mounting for all integral safety equipment
including, but not limited to:
• Power supplies
• Control modules
• Field detection devices
• Signaling / output devices
• Accessories connected to field and signaling devices
• RGC or ARGC (if purchased)
6
Model S4000CH
2.0 Product Description
2.1 General Description
The Model S4000CH is an intelligent sensor for the detection of combustible gases and
vapors. The microprocessor-based electronics process information at the sensor site within
an explosion-proof housing.
A digital display provides indications and display codes that can be viewed through a window
in the cover. A red LED above the digital display signifies an ALARM condition, while a red
LED below the digital display signifies a WARN condition. Analog signal (4-20 mA) and relays
provide remote and/or discrete indications of the sensor’s operation. Optional dual redundant
Modbus, HART or HART and single Modbus provide digital communication.
The Model S4000CH Intelligent Sensor is rated explosion-proof for use in the following
hazardous areas:
• CSA/FM: Class I, Division 1, Groups B, C, D and Class I, Zone 1, IIB+H2
• ATEX/IECEx: Class I, Zone 1, Group IIB+ H2
Figure 7: Model S4000CH Intelligent Sensor
7
Model S4000CH
Figure 8: Model S4000CH Intelligent Sensor with ARGC
Figure 9: ARGC Remote Junction Box Assembly (P/N 80155-1)
8
Model S4000CH
3.0 Installation
3.1 Receipt of Equipment
All equipment shipped by General Monitors is pre-packed in shock absorbing containers,
which provide protection against physical damage (original containers should be kept for
future shipping or storage needs).
Shipping container contents should be carefully removed and checked against the packing
list. If any damage has occurred, or there is any discrepancy in the order, please notify
General Monitors as soon as possible.
All correspondence with General Monitors must specify the equipment part number and serial
number.
The factory tests each unit; however, a complete system checkout is suggested upon initial
installation to ensure system integrity.
WARNING:
Installation and maintenance must be carried out by suitably skilled and
competent personnel only.
3.2 Tools Required
“5 mm” Allen head wrench to remove enclosure lid (included with gas detector).
Flat-head screwdriver maximum 3/16” (5 mm) width for terminal block connections
(included with gas detector).
Adjustable wrench for conduit or cable gland connections (not included).
3.3 Choosing Product Locations
There are no standard rules for sensor placement, since the optimum sensor location is
different for each application. The customer must evaluate conditions at the facility to make
this determination. Generally, the Model S4000CH Intelligent Sensor should be easily
accessible for calibration checks.
•
The sensor should be mounted pointing down to prevent water build-up on the
sensor head.
•
The sensor should not be placed where contaminating substances may coat it.
•
Although the S4000CH is RFI resistant, it should not be mounted in close proximity to
radio transmitters or similar equipment.
•
Locate the S4000CH where prevailing air currents contain the maximum
concentration of gas.
•
Locate the S4000CH near possible sources of gas leaks.
•
Observe the S4000CH’s temperature specification and locate the unit away from
concentrated sources of heat.
9
Model S4000CH
•
Sensors should be mounted in an area that is as free from wind, dust, water, shock,
and vibration as possible. See Section 7.3.6 for the environmental specifications of
the unit. If the sensor cannot be located away from dust and rain, then we
recommend the use of our splashguard GM P/N 10395-1 to help protect the sensor.
Sensors may be adversely affected by prolonged exposure to certain materials. Loss of
sensitivity or corrosion may be gradual if such materials are present in low concentrations, or
it may be rapid at high concentrations. The more important materials adversely affecting
sensors are:
•
Constant presence of high concentrations of hydrogen sulfide (H2S) gas
•
Silicones (often contained in greases and aerosols)
•
Halides, compounds containing fluorine, chlorine, bromine and iodine
•
Heavy metals, e.g. tetraethyl lead
•
Caustic and acidic liquids and vapors
The presence of poisons and contaminants in an area does not necessarily preclude the use
of a Model S4000CH intelligent sensor. The feasibility of using a sensor in such areas must
be determined by an analysis of the specific factors in each application and General Monitors
should be consulted before attempting any such installation.
Sensors used in these areas usually require more frequent calibration checks than normal,
and typically have a shorter life. In many such applications, the standard two-year warranty
would not apply.
WARNING:
General Monitors discourages the painting of sensor assemblies. If the sensor
head is painted over, the gas will not be able to diffuse into the sensor. If the
assembly cover is painted over, the digital display cannot be read.
3.3.1 Remote Mounting of the Sensor from the Electronics
If it is necessary to remotely mount the sensor from the electronics and the housing, the
sensor must be mounted in an explosion-proof rated sensor housing (GM P/N 10252-1),
and the cable run must be contained in conduit running from the sensor housing to the
electronics. See Section 7.3.4 for cable lengths. The maximum cable length to the power
supply will be reduced by 10%. See Section 7.7 for FM approval requirements.
General Monitors has accessories that help with remote or difficult to get to locations. The
RGC or ARGC facilitate remote gassing.
3.4 Mounting and Wiring
WARNING:
Unused cable entry holes must be sealed with a suitably certified ATEX or
IECEx explosion-proof stopping plug. Red caps supplied by General Monitors
are for dust protection only, and must not be left on the unit when installed.
The outline and mounting dimensions for the S4000CH (Figure 10) should be used when
making installation determinations. A complete list of the mechanical specifications can be
found in Section 7.3.2.
10
Model S4000CH
To prevent possible corrosion due to moisture or condensation, it is recommended that the
conduit connected to the S4000CH housing, if used, contain a drain loop.
NOTE: For ATEX and IECEx applications, conduit connections must only be made via
suitably certified ATEX (or IECEx as appropriate) conduit stopping boxes.
Information on Class I Division 1 wiring methods can be found in NEC Article 501.10.
WARNING:
Acetic acid will cause damage to metal components, metal hardware, ceramic
IC’s, etc. If damage results from the use of a sealant that outgases acetic acid
(RTV silicone), the warranty will be void.
Figure 10: Outline and Mounting Dimensions in inches
Figure 11: Outline and Mounting Dimensions (ARGC) in inches
11
Model S4000CH
Once correctly installed, the S4000CH requires little or no maintenance, other than periodic
calibration checks to ensure system integrity. General Monitors recommends that a
calibration schedule be established and followed.
NOTE: The S4000CH full two-year warranty will be voided if customer personnel or third
parties damage the S4000CH during repair attempts.
Sensor heads exposed to the elements may require the accessory mounting threads to be
lubricated. Grease must not be used. As an alternate, PTFE (Teflon) tape may be used on
sensor accessory threads.
NOTE: Do not use any material or substance on threads that contact the sensor housing.
The removal of particulate matter from sensor accessories may be done through the use of
an appropriate halogen-free solvent. Water and ethanol are examples of suitable solvents.
The accessories should be thoroughly dried with compressed air, if necessary, before refitting
to the sensor body.
3.5 Terminal Connections
The terminal blocks (TB) are located inside the housing and can be accessed by removing
the cover. A label on the inside of the housing cover provides details of all the terminal
connections.
12
Model S4000CH
TB2
TB3
TB1 WIRING:
WHT BLK RED
Figure 12: S4000CH Terminal Block Locations
Figure 13: Remote Junction Box Terminal Block
13
Model S4000CH
3.5.1 Terminal Block TB1 – Sensor Connections
TB1 contains the three sensor connections, white (W), black (B), and red (R). Remove the
display board by loosening the two captive screws on the board and lifting it straight up.
Connect the color-coded wires from the combustible sensor to the matching colored
terminals on TB1. The label on the inside of the cover can serve as a guide. Replace the
display board by pressing it into place, and tightening the two captive screws.
WARNING: Do not connect +24 VDC to TB1. Damage to the electronics will result.
3.5.2 Terminal Block TB2 – Power and Signal Connections
TB2 contains the connections for Power, Relay Reset, Remote Calibration/ARGC,
Modbus and 0-20 mA Output Signal. The terminal connections are as follows:
TB2 position
1
2
3
4
5
6
7
8
9
10
Function
0-20 mA Output
CH1 Modbus CH1 Modbus +
CH2 Modbus CH2 Modbus +
Remote Calibration/ARGC
Relay Reset
COM
+24 VDC Power
+24 VDC Power for ARGC
Table 1: TB2 Power and Signal Connections
It is recommended that a minimum three-wire shielded cable be used for making the
power and 0-20mA Output connection on the S4000CH. It is also recommended that
separate two-wire shielded twisted pair cables be used for making the Modbus
connections. The spring type terminal block accepts 14 AWG to 20 AWG and the screw
type terminal block accepts 12 AWG to 18 AWG stranded or solid wire. Each wire should
be stripped before wiring the S4000CH. To connect wiring to the spring type terminal
block, insert a screwdriver into the orange tab and press down (Figure14), opening the
terminal. Insert the wire into the terminal and release the orange tab, clamping the wire in
the terminal. Check the hold of the wire by GENTLY tugging it to ensure it is locked in.
Ground
+24 VDC
Figure 14: Spring Type Terminal Block Operation
14
Model S4000CH
To connect wiring to the screw type terminal block, (Figure 15) use a screwdriver to
loosen the top screw counter clockwise. Insert the wire into the terminal and tighten the
top screw clock wise. Check the hold of the wire by GENTLY tugging it to ensure it is
locked in.
Ground
+24 VDC
Figure 15: Screw Type Terminal Block Operation
Figure 16: Wire Strip Length
NOTE: Up to 14 AWG wire can be used if it is carefully stripped (Figure 16).
15
Model S4000CH
3.5.3 DC Power and COM Connections
The customer must provide primary DC power unless one of the following General
Monitors modules is being used with the S4000CH:
•
TA102A trip amplifier module with a PS002 power supply & relay module
The following General Monitors modules provide power connections for the S4000CH, but
need a customer supplied DC source:
•
DC110 Eight-Channel Readout/Relay Display Module
•
TA102A Trip Amplifier Module without a PS002
Since the S4000CH is designed to operate continuously, a power switch is not included, in
order to prevent accidental system shutdown.
NOTE: Power must remain disconnected until all other wiring connections have been
made.
See Section 7.3.4 for cable length specifications.
To connect +24 VDC to the S4000CH, connect the red wire (+24V) to TB2, position 9.
Connect the black wire (Ground) to TB2, position 8.
For making power and ground connections to display devices see Table 2 and Table 3.
FROM
TO
S4000CH
DC110
TA102A
TB2-8
“COM”
Rear
COMMON
Rear
Pin 30d or 30z
Table 2: Ground or Common Connections
FROM
TO
S4000CH
DC110
TA102A
TB2-9
“+24 VDC”
Rear
CH 1 – 8
24V
Rear
Pin 28d or 28z
Table 3: Power Connections
3.5.4 Analog Signal Connections
The S4000CH Intelligent Sensor provides a 4 to 20 mA output signal. It can be sent up to
9000 feet (2740 meters) to a General Monitors readout/relay display module, or an
industrial analog to digital converter, or a computer-based monitor, a PLC, a DCS, etc.
The 4 to 20 mA signal provides for control room or other locations remote to the S4000CH
to display indications of operation and alarm conditions.
16
Model S4000CH
To connect the 4 to 20 mA output signal with another unit, connect the wire into TB2,
position 1, labeled 4-20 mA OUT. For making output signal connections to display devices
(Table 4), refer to the specific manual for that device.
NOTE: Power must remain disconnected until all other wiring connections have been
made.
.
FROM
TO
S4000CH
DC110
TA102A
TB2-1
4-20 mA
Output
Rear
CH 1 – 8
4-20 mA
Rear
Pin 26d or
26z
Table 4: Analog Signal Connections
If a device other than a General Monitors readout/relay display module is being used, the
DC ground, COM, of both systems must be connected together.
3.5.5 ARGC Terminal Connections
The solenoid valve is not polarized. Either wire can go to either terminal. One wire goes
to the Calibrate Input/ARGC Output and the other wire goes to the +24 volts.
CAUTION: When the ARGC is used it cannot be used as a calibration input.
3.5.6 Terminal Block TB3 – Relay Connections
TB3 contains the connections for the Relay Contacts (optional). The function for the Warn
and Alarm Relay connections vary according to the normal state of the relay. Use the
following as a guide for determining the Normally Open (NO) and the Normally Closed
(NC) contact:
TB3 position
1
2
3
Relay Contact(De-Energized)
Normally Closed
Common
Normally Open
Relay Contact (Energized)
Normally Open
Common
Normally Closed
Table 5: Alarm Relay Connections
TB3 position
4
5
6
Relay Contact (De-Energized)
Normally Closed
Common
Normally Open
Table 6: Warn Relay Connections
17
Relay Contact (Energized)
Normally Open
Common
Normally Closed
Model S4000CH
TB3 position
7
8
9
Relay Contact (Energized)
Normally Open
Common
Normally Closed
Table 7: Fault Relay Connections
NOTE: Fault relay is normally energized. Relay will change state after power up.
WARNING: Contact with PCB components should be avoided to prevent damage by
static electricity. All wire connections are made to the Terminal Blocks. Relay
contacts must be protected against transient and over voltage conditions
(Figure 17).
Figure 17: Relay Protection for DC and AC Loads
European Union (EU) Approved Applications: The ALARM relay contact ratings are 8 A,
30 V RMS/42.4 V peak or 8 A @ 30 VDC resistive max.
North American Approved Applications: The ALARM relay contact ratings are 8 A @ 250
VAC and 8 A @ 30 VDC resistive max.
3.5.7 European Union (EU) Approved Applications
Interconnecting cables must have an overall screen or screen and armor. Cables BS5308
Part 2, Type 2; or equivalent, are suitable. Note that the terms ‘screen’ and ‘shield’ are
equivalent for the purpose of this manual. The cable armor must be terminated in a
suitable cable gland, at the detector, to ensure a positive electrical connection.
3.5.8 Cable Termination in the Non-Hazardous Area
• The cable armor must be connected to safety earth in the safe area.
• The cable screen (drain wire) must be connected to an instrument earth in the safe
area.
• The power supply 0V return must be connected to an instrument earth in the safe
area.
18
Model S4000CH
• The interconnecting cables should be segregated from power and other noisy cables.
Avoid proximity to cables associated with radio transmitters, welders, switch mode
power supplies, inverters, battery chargers, ignition systems, generators, switch gear,
arc lights and other high frequency or high power switching process equipment. In
general, maintain separation of at least 1 meter between instrument and other
cables. Greater separations are required where long parallel cable runs are
unavoidable. Avoid running instrument cable trenches close to lightning conductor
earth pits.
• Complete all cable insulation testing before connecting the cable at either end.
WARNING: Under NO circumstances should equipment be connected or disconnected
when under power. This is contrary to hazardous area regulations and may
lead to serious damage to the equipment. Equipment damaged in this
manner is not covered under warranty.
3.6 Maintaining the X/P Integrity
The S4000CH intelligent sensor is rated explosion-proof for use in the following hazardous
locations:
• CSA/FM: Class I, Division 1, Groups B, C, D and Class I, Zone 1, IIB+H2
• ATEX/IECEx: Class I, Zone 1, Group IIB+ H2
Some of the factors that influence the explosion-proof integrity of the S4000CH housing are:
• Strength of the enclosure material
• Thickness of the enclosure walls
• Flame path between the housing and cover
• Flame path of threaded joints
The acceptable limits for explosion-proof housings that are used in hazardous locations are
defined in CSA Standard C22.2 No.30, FM 3615, and EN/IEC 60079-1.
Anytime the cover of the S4000CH housing is removed, or the cover bolts are loosened, the
flame path between the lid and the housing is affected. If power is to be left on while
removing the cover or loosening the cover bolts on the S4000CH, it will be necessary to
declassify the area.
When replacing the cover, the gap between the lid and the housing should be less than .0015
inch (.038 mm). Make sure that the flame-path is clear of dirt and debris before replacing the
cover. This can be verified by tightening the cover bolts to a torque setting of 50 inch-pounds
or by using a feeler gauge to ensure the gap between the cover and the housing is less than
.0015 inch (.038 mm).
There are four entry holes, one each on the left and right sides, and two on the bottom of the
S4000CH housing. These holes are dedicated for the sensor and conduit/cable. Each hole is
tapped for ¾” NPT threads. If a particular entry hole is not used, it must be plugged during
operation in the field. The factory installs plugs in the unused entry holes, except one. A red
plastic cap is placed into this remaining hole and must be removed before conduit can be
attached to the housing.
19
Model S4000CH
The S4000CH will have the following items placed in the four entry holes, at the factory:
•
A sensor, if present (otherwise a red plastic cap)
•
Two aluminum stopping plugs
•
A red plastic cap
The sensor and aluminum-housing plugs have seven threads. Each of these components is
screwed into the housing using five to seven turns. If any of these components must be
replaced, apply five to seven turns upon replacing the component to ensure the explosion
proof integrity of the device is maintained.
3.7 Start-Up Checklist
Prior to starting the system, verify the following:
Inhibit any external devices, such as trip amplifiers, PLC’s, or DCS systems.
Verify that the optional settings are set for the desired configuration.
Verify that the unit is properly mounted. Ensure the conduit/cable gland entries are
pointed downward.
Verify that the signal wiring is correct.
Verify that the power supply is connected properly. The S4000CH is powered by
+24 VDC (20 to 36 VDC voltage range). The detector will output a low voltage (F6)
fault at 18.5 VDC or below.
Make sure the lid is securely installed or the area has been declassified.
Calibrate one hour after start-up.
3.8 Start-Up
Before applying power to the system for the first time, all wiring connections should be
checked for correctness and the housing cover replaced. Upon first power-up the sensor may
take up to fifteen minutes to stabilize.
At the initial application of power, the unit will test all of the LED segments by displaying
“88.8”. The software revision letter will then be displayed for a few seconds. The unit will then
enter a fifty second Start-Up Mode. During this period, the display will read “SU”. The unit will
then enter Operational Mode, and the current gas concentration at the sensor will be
displayed. For details on calibrating and gas checking the unit, see Sections 3.13 and 3.14.
3.9 Relay Reset
If the Warn and Alarm relays are configured as latching, they must be manually reset, after
an alarm occurs. This can be accomplished by four different methods:
The relays can be reset via the magnetic switch using a magnet. Place the magnet
over the GM logo on the cover of the unit. After three seconds, the display will show
“rSt”. Remove the magnet at this time and the relays will be reset (Figure 18).
20
Model S4000CH
Figure 18: Relay Reset
The relays can be reset via the Remote Reset input terminals on TB2. Connect a
normally open switch between terminal TB2-7 and TB2-8. Closing the switch
momentarily will reset the relays. General Monitors explosion-proof switch, P/N
30051-1, can be used for this purpose. See Section 7.6 for ordering instructions.
The relays can be reset via the Modbus Interface (Section 6.0).
The relays can be reset via the HART communication.
NOTE: Red LED’s above and below the digital display indicate that the Alarm and Warn
relays are active. Latching relays can only be reset if the gas concentration has fallen
below the respective relay set point.
3.10 User Selectable Options
The S4000CH includes many selectable options to provide the user with the most flexible
combustible gas detector possible. These options include Adjustable Calibration Level, Warn
and Alarm Relay Set Points and Configuration, and Modbus Communications Settings.
These allow the unit to operate with a wide variety of PLC and DCS Systems. The following
sections explain the available options and how they can be customized. A flow diagram is
included to help the user in understanding the process of reviewing and changing the
available options (Figure 19).
NOTE: If the unit was ordered without relays or Modbus communications, changing relay or
Modbus settings will have no effect on the operation of the unit.
3.11 Available Separate Purchase Options
Modbus
• Dual Redundant Modbus
• Single Modbus and HART
HART
RGC
ARGC
• HART is a Master to Slave -One to One communication channel.
• The Remote Gas Calibrator (RGC) is an accessory that allows remote calibration.
With this device, the user turns on and off the calibration gas manually.
• The ARGC accessory is an Automatic Remote Gas Calibrator (ARGC). It is a kit
with a RGC, a solenoid valve and all the required fittings from the valve to the
RGC.
21
Model S4000CH
Remote Mounted ARGC
• The ARGC is also available in a standard GM explosion proof box. This provides
terminal strips for all the connections to activate the ARGC.
3.11.1 Model S4000CH User Menu Structure
FAULT
User Menu Structure
Y
Operate
RM
“rSt”
Hm
“- -”
“AC”
Rm
Rm
Reset
Relays
Hm
Hm
“SE”
Enter
Calibration
Mode
ARGC
Enabled?
ARGC
Enabled?
Am
“Co”
Y
N
“NS”
New Sensor
Enable
“Fi”
Disable
“Fi”
Am
“ARGC”
N
Enable
Disable
“Fi”
Enable
Disable
“Fi”
Am
Reset
Sensor Life?
If HART Installed
Turn on
Gas for 1
Minute
Reset
Sensor
Life?
“SEL”
New Sensor Selected
Y
Am
Y
“HRT” Am
N
Am
Y
Set Calibration
Level 25% -90%
Y
N
Gas
Detected?
NO
Am
“cL”
Time OUT
Hm
RM
Rm
Enter Gas Check
Mode
“SE”
“SE”
Hm
N
Gas
Removed?
Reset Sensor Life
to 100%
Am
“Lo”
Warn Relay
Reset Sensor
Life to 100%
“CH1”
Modbus
Channel 1
Apply Gas and
Remove Manually
When Complete
Latching or NonLatching
Setpoint
Energized or
De-Energized
Latching or NonLatching
Setpoint
“Fi”
Am
“Hi”
Alarm Relay
Gas Applied and
Removed Automatically
Energized or
De-Energized
Am
Baud
Rate
Data
Format
“Fi”
Address
“Fi”
N
If HART Enabled
Hm– Hold magnet
Y
“CH2”
Modbus
Channel 1
Am
Baud
Rate
Data
Format
Address
“Fi”
Am – Apply magnet
Rm– Remove magnet
“Fi”
Finished
Am
Y
Figure 19: User Menu Structure
NOTE: “Co” represents Calibration Output. When “Co” is enabled and calibration is
successful, the analog output goes from 1.5 mA to 3.2 mA for 5 seconds, settling
at the desired value of 4 mA. This option is commonly used with the General
Monitors HazardWatch system.
22
Model S4000CH
3.11.2 Calibration Level
NOTE: Refer to Section 3.14.1 for the calibration procedure.
To adjust the calibration level of the S4000CH, apply the magnet to the GM logo on the
cover of the unit, until “SE” is displayed, then remove the magnet. This puts the unit into
Setup Mode. After a few seconds “cL” will be displayed. Apply and remove the magnet to
adjust the calibration level. The current calibration level will be displayed. To change the
calibration level, apply and remove the magnet repeatedly, until the desired level is
displayed. Holding the magnet in place will cause the display to advance rapidly after a
few seconds. Once the desired value is displayed, wait 3 seconds and “Fi” will be
displayed. Apply and remove the magnet to return to the next level of the Setup menu.
When “Fi” is displayed again, apply and remove the magnet to return to normal operation.
The default calibration level is 50% LEL.
3.11.3 Warning Relay Settings
To adjust the Warning Relay Settings of the S4000CH, apply the magnet to the GM logo
on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit
into Setup Mode. After a few seconds “Lo” will be displayed. Apply and remove the
magnet to change the Warning or “Low” alarm settings.
First, the Energized/De-Energized state of the relay is shown by either “En” or “dE” being
displayed, respectively. Apply and remove the magnet until the desired state is displayed.
After a few seconds, the Latching/Non-Latching state of the relay is shown by either “La”
or “nL”. Apply and remove the magnet, until the desired state is displayed.
After a few seconds, the current Warning relay set point is displayed. Apply and remove
the magnet, until the desired set point is displayed. Once the desired set point value is
displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to
return to the next level of the Setup menu. When “Fi” is displayed again, apply and
remove the magnet, to return to normal operation.
The default Warning Relay Settings are: non-latching, de-energized, 30% LEL set
point.
NOTE: The Warn relay set point cannot be set higher than the Alarm Relay set point, or
higher than 60% LEL.
3.11.4 Alarm Relay Settings
To adjust the Alarm Relay Settings of the S4000CH, apply the magnet to the GM logo on
the cover of the unit until “SE” is displayed, then remove the magnet. This puts the unit
into Setup Mode. After a few seconds “Hi” will be displayed. Apply and remove the
magnet to change the Alarm or “High” alarm settings.
First, the Energized/De-Energized state of the relay is shown by either “En” or “dE” being
displayed respectively. Apply and remove the magnet, until the desired state is displayed.
After a few seconds, the Latching/Non-Latching state of the relay is shown by either “La”
or “nL”. Apply and remove the magnet, until the desired state is displayed.
23
Model S4000CH
After a few seconds, the current Alarm relay set point is displayed. Apply and remove the
magnet until the desired set point is displayed. Once the desired set point value is shown,
wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to return to the
next level of the Setup menu. When “Fi” is displayed again, apply and remove the magnet
to return to normal operation.
The default Alarm relay settings are: latching, de-energized, 60% LEL set point.
NOTE: The Alarm relay set point cannot be set lower than the Warning Relay set point, or
higher than 60% LEL.
3.11.5 Modbus Channel 1 Settings
To change the Modbus Channel 1 settings of the S4000CH, apply the magnet to the GM
logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the
unit into Setup Mode. After a few seconds “CH1” will be displayed. Apply and remove the
magnet to change the Modbus Channel 1 settings.
First, the current Baud Rate Modbus Channel 1 is displayed. If another baud rate is to be
selected, apply and remove the magnet until the desired baud rate is displayed. The
choices are: 19.2k baud “19.2”, 9600 baud “96”, 4800 baud “48”, or 2400 baud “24”.
After a few seconds, the current Data Format for Modbus Channel 1 is displayed. If
another data format is to be selected, apply and remove the magnet until the desired data
format is displayed. The choices are: 8-N-1 “8n1”, 8-N-2 “8n2”, 8-E-1 “8E1”, or 8-O-1
“8O1”.
After a few seconds, the current address for Modbus Channel 1 is displayed. Apply and
remove the magnet until the desired address is displayed. Once the desired address is
displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to
return to the next level of the Setup menu. When “Fi” is displayed again, apply and
remove the magnet to return to normal operation. Default settings for Channel 1 are:
address 1, 19.2k baud, 8-N-1.
NOTE: The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses
may be the same.
3.11.6 Modbus Channel 2 Settings
To change the Modbus Channel 2 Settings of the S4000CH, apply the magnet to the GM
logo on the cover of the unit until “SE” is displayed, then remove the magnet. This puts the
unit into Setup Mode. After a few seconds “CH2” will be displayed. Apply and remove the
magnet to change the Modbus Channel 2 settings.
First, the current Baud Rate Modbus Channel 2 is displayed. If another baud rate is to be
selected, apply and remove the magnet until the desired baud rate is displayed. The
choices are: 19.2 kbaud “19.2”, 9600 baud “96”, 4800 baud “48”, or 2400 baud “24”.
After a few seconds, the current Data Format for Modbus Channel 2 is displayed. If
another data format is to be selected, apply and remove the magnet until the desired data
format is displayed. The choices are: 8-N-1 “8n1”, 8-N-2 “8n2”, 8-E-1 “8E1”, or 8-O-1
“8O1”.
24
Model S4000CH
After a few seconds, the current address for Modbus Channel 2 is displayed. Apply and
remove the magnet until the desired address is displayed. Once the desired address is
displayed, wait 3 seconds and “Fi” will be displayed. Apply and remove the magnet to
return to the next level of the Setup menu. When “Fi” is displayed again, apply and
remove the magnet to return to normal operation.
Default settings for Channel 2 are: address 2, 19.2k baud, 8-N-1.
3.12 HART/Modbus SELECT
This option is not shown if HART was not purchased for the S4000CH. When HART is
selected via setup, the Channel 2 setup is not displayed or available. When Channel 2 is
changed from HART to Modbus, the previous settings are used.
NOTE: The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses may
be the same.
3.13 Gas Check Mode
The sensor response can be checked without activating external alarms by placing the
S4000CH in Gas Check Mode. In this Mode, the alarm relays are inhibited and the analog
output is fixed at 1.5 mA. The display will show the gas concentration level.
3.13.1 Calibration Check
Place the magnet over the GM logo on the cover of the S4000CH. Remove the magnet
when a flashing pair of bars, “- -” (Figure 20) appears on the display (about ten seconds).
Apply the test gas to the sensor; the value of the gas concentration will be indicated by the
flashing display, and should stabilize in one to two minutes.
Figure 20: Calibration Check
When the reading has stabilized and the test is complete, remove the gas and the unit will
return to normal operation when the concentration drops below 5% full-scale.
If the ARGC is installed and enabled, the gas will be turned on and then automatically
turned off 1 minute later unless Calibration Mode is entered. Once in Calibration Mode,
calibration will take control of the ARGC.
If, after the reading has stabilized, the sensor is to be calibrated, simply apply the magnet
to the GM logo on the housing cover, and the unit will enter Calibration Mode.
Gas Check Mode can be aborted if gas has not been applied to the sensor. Simply
reapply the magnet to the GM logo on the cover and the unit will return to normal
operation.
25
Model S4000CH
NOTE: The test gas concentration must be at least 10% full-scale before the unit will
complete the gas check sequence. If the S4000CH is placed in the Gas Check
Mode and no gas is applied for six minutes, the unit will revert to a Fault (F9)
condition. Re-applying the magnet over the GM logo will return the unit to normal
operation. If the ARGC mode is enabled, and the S4000CH is placed in the Gas
Check mode and no gas is applied for 1 ½ minutes, the unit will revert to a fault
(F12) condition. Re-applying the magnet over the GM logo will return the unit to
normal operation.
3.14 Calibration
General Monitors recommends that the S4000CH Intelligent Sensor be calibrated one hour
after start-up, and that the calibration be checked at least every ninety (90) days to ensure
system integrity. Frequent calibration checks ensure the integrity of the life protecting
equipment.
The above statement is not intended to discourage the customer from checking calibration
more frequently. Frequent calibration checks are recommended for environments that have
problems, such as mud collecting on the sensor head, sensors accidentally being painted
over, etc.
General Monitors recommends that a calibration schedule be established and followed. A
logbook should also be kept, showing calibration dates and dates of sensor replacement.
3.14.1 Calibration Procedure
There are three methods for calibrating the S4000CH: Manually, with an RGC, or with an
ARGC.
NOTE: If the RGC or ARGC is not installed, the S4000CH calibration is identical to the
S4000C.
NOTE: If the Catalytic bead sensor is fitted with a splash guard, calibration must be
performed with the splash guard in place.
WARNING: General Monitors recommends calibrating the S4000CH with 50% LEL of the
gas being detected. This provides the most accurate calibration, since the
S4000CH is optimized for this concentration. The accuracy of the calibration
may be reduced by using a different calibration level, and this inaccuracy will
increase as the calibration level varies from 50% LEL.
If it is suspected that gases are present, it will be necessary to purge the sensor
environment with zero air. If zero air is not available, cover the sensor for about thirty
seconds before applying the calibration gas. Zero air is air that is hydrocarbon free.
Entering Calibration Mode disables the alarm circuits by sending a 1.5 mA output signal
and disabling the Warn and Alarm relays, if present. This will also prevent activation of the
remote relay contacts when using a General Monitors Readout/Relay Display Module with
the S4000CH.
To enter Calibration Mode, place the magnet over the GM logo on the cover of the unit
(Figure 7) and hold it there until “AC” (Figure 21) appears on the display (about ten
26
Model S4000CH
seconds). The display will flash the remaining sensor life (Section 3.14.4) for about ten
seconds, while the unit acquires the zero reading. Ensure that the sensor is seeing clean
air during this time. Calibration mode can also be entered via remote switch. This option
cannot be used when the ARGC is enabled.
Figure 21: Automatic Calibration Mode
Apply the calibration gas concentration to the sensor (usually 50% LEL of the desired
gas). The display will change from “AC” (Automatic Calibration) to “CP” (Calibration in
Progress), indicating that the sensor is responding to the calibration gas (Figure 22).
Figure 22: Calibration in Progress Mode
After one or two minutes, the display will change from “CP” to “CC” (Figure 23), indicating
that the calibration is complete.
Figure 23: Calibration Complete Mode
Remove the gas and wait for the unit to return to normal operation. The display will
indicate a few percent full-scale and then drop to “0”.
The unit is now calibrated and the new ZERO and SPAN values have been stored in the
non-volatile memory (EEPROM).
NOTE: The sensor life figure displayed is that calculated on completion of the last
calibration. To determine the current sensor life, calibrate unit and then repeat steps 1
and 2.
3.14.2 Aborting Calibration
If calibration is to be aborted, and gas has not been applied, wait ninety seconds and
reapply the magnet. The unit will return to normal operation with the previous calibration
values unchanged.
NOTE: Once gas has been applied, it is not possible to abort a calibration.
27
Model S4000CH
If the S4000CH is placed in the Calibration Mode and no gas is applied for six minutes,
the unit will revert to a Fault condition. Re-applying the magnet over the GM logo will
return the unit to operational mode with the previous calibration values unchanged.
3.14.3 Adjustable Calibration Level
The S4000CH provides the user with the ability to adjust the calibration level from 25%
LEL to 90% LEL. The default value from the factory is 50% LEL. This allows the user to
utilize gas already available at their installation, or to perform cross-calibration to a similar
gas. Adjusting the Calibration Level is performed in Setup Mode.
NOTE: %LEL to %Volume fraction is converted by using NFPA 325 Guide to Fire Hazard
Properties of Flammable Liquids, Gases, and Volatile Solids. For example, 100%
LEL CH4 is shown in NFPA to be 5% Volume, Calibration is at 50% LEL or 2.5%
Volume.
3.14.4 Remaining Sensor Life
The S4000CH Intelligent Sensor provides an estimate of remaining sensor life, in percent
remaining, to provide the user with an early warning of the need for sensor replacement.
The remaining sensor life is updated each time the unit is calibrated. The current
remaining sensor life estimate is displayed during the zeroing portion of a calibration
sequence. It can also be read via the Modbus and HART interface (Section 6.8.22).
NOTE: Remaining sensor life is an estimate of sensor degradation derived from sensor
sensitivity. Because sensor sensitivity is affected by factors other than the natural
sensor degradation, users must establish their own reference by resetting sensor
life whenever these factors are at play. Some examples of these factors are new
sensor installations, sensor replacement, change of the target gas, and changes
in the access of gas to the sensor (produced by the TGA, RGC, or splash guard).
If sensor life is not reset, the remaining sensor life indicator will no longer reflect
the true state of the sensor.
3.14.5 Initializing the Remaining Sensor Life
The remaining sensor life estimate must be initialized each time a new hydrocarbon
sensor is installed. The initialization should be done during the first calibration of a newly
installed sensor. After the sensor has been on power for a minimum of one hour, enter
calibration mode as described in Section 3.14.1. While the display is flashing the
remaining sensor life estimate during zeroing, apply the magnet to the GM logo on the
cover. The flashing number will change to “100”, indicating the sensor has 100% of
remaining sensor life. Complete the calibration per Section 3.14.1.
3.15 Calibration Equipment
3.15.1 Portable Purge Calibrator
The portable purge calibrator is a compact, accurate and safe system containing a nonexplosive gas concentration. The lecture bottle is filled with a standard 50% LEL mixture
of gas/air. Using a known gas/air mixture reduces the likelihood of error in field calibration.
The hose and cup adapter allow for quick calibrations and gas checks. Pre-mixed
28
Model S4000CH
calibration gases at 50% LEL are available in lecture bottles at 1200 psia, 8.3 MPa
maximum pressure.
Hydrogen
H2
Methane
Propane
CH4
C3H8
Please specify the gas upon ordering. Spare bottles containing these gases may be
ordered. Methane and hydrogen lecture bottles may be returned to General Monitors for
refilling.
3.16 Remote Gas Calibrator
The S4000CH has optional accessories called the Remote Gas Calibrator (RGC) and the
High Temperature RGC (RGC-HT). They are designed for remote or difficult to access
locations. They cover the sensor and allow a controlled flow of gas to it. This allows
calibration in high wind conditions and can be permanently attached to the sensor. Since it is
permanently attached, it is useful for remote locations. The calibrators use a constant
pressure. For calibration using the RGC or the High Temperature RGC, refer to Section
3.14.1.
Figure 24: Remote Gas Calibrator (RGC, P/N 80153-1)
3.17 ARGC Gas Control
The S4000CH has a Modbus or HART controlled output that can be used to turn the cal gas
on and off remotely if the proper plumbing is provided.
Figure 25: ARGC Gas Control (P/N 80154-1)
29
Model S4000CH
3.18 Automatic Remote Gas Calibrator (ARGC)
The S4000CH has an optional Automatic Remote Gas Calibrator. The ARGC is a
combination of the above P/N’s for local remote calibration (Figure 8). The ARGC can be
remotely installed using the above P/N’s and P/N 32547-1 (Remote Junction Box, Figure 9).
The ARGC is intended for remote, unmanned sites, or hard to reach gas sensors. It can be
used for either Calibration Mode or Gas Check Mode. This system has a user supplied
permanent tank of calibration gas. When Calibration Mode is selected, the ARGC valve turns
on and off at the proper time. When Gas Check Mode is selected, the gas is turned on for 1
minute then turned off. If the gas does not arrive or leave at the appropriate time, an error will
be displayed.
The sensor and the ARGC work together as a system. The ARGC will try to detect a
defective valve, a bad sensor, empty gas cylinder, or stuck actuator and signal a problem by
a F12 fault. When a new sensor is installed, the user should select the new sensor
calibration. In this mode, all ARGC faults are ignored. The cause of the ARGC fault could
be a dirty ARGC or poisoned sensor. If the system goes to ARGC fault the valve and sensor
should be inspected. If the user calibrates again the ARGC faults will be cleared.
In poorly ventilated areas, the gas concentration at the sensor may be lower than that outside
the ARGC since the meshed cylinder of the ARGC reduces airflow to the sensor. Therefore,
when installing a sensor with an ARGC in a space with little air flow, it is important to adjust
the warning and alarm settings to a lower level.
NOTE: The ARGC requires extra power. Connect the ARGC 24 VDC at TB2 pin 10 Refer to
Table 1.
3.19 Calibration Using the ARGC
To use the ARGC the user must have previously enabled the ARGC via the display, Modbus,
or HART. Once ARGC Mode is enabled it will remain enabled until disabled. To enter
Calibration Mode, send the appropriate Modbus or HART command or place the magnet over
the GM logo on the cover of the unit (Figure 7) and hold it there until “AC” (Figure 21)
appears on the display (about ten seconds). The display will indicate “NS” (New Sensor).
This is asking if a new sensor has been installed. A new sensor command can also be sent
via Modbus or HART.
NOTE: If a new sensor is installed, the “NS” option must be selected.
“NS”
If a new sensor has been installed, apply the magnet, “SEL” appears on the display. All
ARGC errors will be ignored and the sensor life will be set to 100. If the sensor has been
calibrated before using the ARGC, the user does not have to apply the magnet when “NS” is
displayed.
“100”
The display shows the remaining sensor life for about ten seconds, while the unit
acquires the zero reading. If the user wants to reset the sensor life they can apply
30
Model S4000CH
the magnet at this time. Ensure that the sensor is seeing clean air during this time.
If the initial reading is greater than 5% LEL, an ARGC error will be indicated. This
means the valve could be leaking.
The display will change to “AC” and the gas will be turned on. If the gas reading is less than
60% of the calibration gas, an ARGC error will be indicated. The display will change from
“AC” (Automatic Calibration) to “CP” (Calibration in Progress), indicating that the sensor is
responding to the calibration gas.
After one or two minutes, the display will change from “CP” to “CC” (Figure 26) indicating that
the calibration is complete. Once the valve closes and the ARGC exposes the sensor to
atmosphere, the system measures the rate the gas leaves the sensor. If it is slow the valve
is sticking and an ARGC error is indicated.
Figure 26: Calibration Complete Mode
The gas will be turned off and the unit will return to normal operation. The display will indicate
a few percent full-scale and then drop to:
“0”
The unit is now calibrated and the new ZERO and SPAN values have been stored in the nonvolatile memory (EEPROM).
When there are ARGC errors, the user should check the ARGC and the sensor. The user
must recalibrate to remove the ARGC errors.
NOTE: Once a new sensor has been calibrated using the ARGC, a simple calibrate
command from the display or HART is all that is required for future calibration.
31
Model S4000CH
4.0 Maintenance
4.1 General Maintenance
WARNING:
Disconnect or inhibit external devices such as trip amplifiers, PLC’s, or DCS
systems before performing any maintenance.
European Union (EU) Approved Applications: The following grease compound is recommended
for use: PBC Polybutylcuprysil, (or equivalent), which has BASEEFA Health & Safety Executive
Component Approval No. 1051U for use as a jointing compound on flameproof electrical
enclosures. This is available from General Monitors.
The neoprene rubber gasket, if found dry, should also be lubricated with Type P80 lubricant,
available from General Monitors (P/N 610-010).
4.2 Storage
The S4000CH Intelligent Sensor should be stored in a clean, dry area, and within the
temperature and humidity ranges quoted in the Appendix under Environmental Specifications.
Insert red dust caps into any vacant cable entry holes.
32
Model S4000CH
5.0 Troubleshooting
CAUTION:
Component level repair must be undertaken either by General Monitors’
personnel, or by competent authorized service engineers. SMT PCB repair shall
only be performed at a General Monitors facility. Failure to comply with this
requirement will invalidate the warranty.
Be sure to inhibit or disconnect external alarm wiring before making any check, which might
send the unit into alarm.
5.1 Fault Codes & Their Remedies
The S4000CH has self-diagnostics incorporated into the microprocessor’s program. If a fault is
detected, the output signal will drop to 0 mA, the fault relay will de-energize and a fault code will
be displayed. The output signal will inform a remote display module that the S4000CH is in the
Fault Mode. The display will indicate a fault code that can be viewed at the sensor site.
There are ten fault conditions that are monitored by the microprocessor, as follows:
5.1.1 F2 Failed to Complete Calibration
This fault will occur if the unit is placed in the calibration mode and no gas has been applied
within six minutes, or if gas has been left on for more than six minutes.
ACTION – Remove gas, if present. Apply the magnet to the GM logo on the cover to clear
the fault. Attempt to calibrate.
5.1.2 F3 Flash Checksum Error
This fault indicates that the contents of the S4000CH’s program memory have changed.
This usually occurs when powering the unit up after a lightning strike or large voltage
transient on the power or signal lines to the unit.
ACTION - The unit must be returned to the factory or authorized service center for repair.
5.1.3 F4 Sensor Error
This fault indicates that either one of the remote sensor leads is open or shorted, or that the
sensor has drifted greater than –10%. The S4000CH has an additional protection feature. If
any of the sensor wires are shorted to ground, the sensor power will be turned off. After 1
minute the power will be turned back on. If the short is still present, power will quickly be
turned off.
ACTION - Check the integrity of all sensor connections, and ensure that the cable from the
S4000CH to the remote sensor is not damaged. If all sensor leads are connected properly,
attempt to re-calibrate the unit. If calibration fails, replace the sensor and re-calibrate.
NOTE: Anytime a sensor is replaced, the unit should be disconnected from all alarms, as
the unit may go upscale upon power-up.
33
Model S4000CH
5.1.4 F5 Unused
5.1.5 F6 Low Supply Voltage
This fault occurs if the supply voltage at the S4000CH drops below +18.5 VDC.
ACTION - Ensure that the supply voltage is at least +20 VDC at the S4000CH.
5.1.6 F7 EEPROM Error
In the event of an EEPROM error, the user must recycle the power to potentially clear the
error. After power reset, the following may occur:
1)
2)
3)
Unit returns to normal.
a. This indicates the EEPROM writing did not keep up to changing events or the
write cycle is too fast.
Unit goes to F2. The user must recalibrate after 1-2 minute sensor warm up.
a. This means the non-critical part of the EEPROM was corrupted.
b. This is probably caused by an event-logging problem.
c. There is a possibility any of the following may be corrupted.
i. Event logging data
ii. Modbus settings
iii. HART settings
iv. Calibration information
v. ARGC setup
Unit returns to F7
a. This is a critical error. This fault occurs when an attempt to verify the
setup/calibration parameters just written to the EEPROM memory fails.
ACTION - The unit must be returned to the factory or authorized service center for repair.
5.1.7 F8 Failure to Complete Setup
This fault occurs if the unit is left in setup mode for more than 6 minutes.
ACTION - Exit setup mode. Enter setup mode again if it is necessary to change any user
selectable options.
5.1.8 F9 Gas Check Period Exceeded
If the S4000CH is left in the Gas Check Mode for more than six minutes or if test gas is left
on the gas check mode for more than 6 minutes, this fault will occur.
ACTION - Place the magnet over the GM logo on the cover to return the unit to normal
operation.
5.1.9 F10 Switch Error
This fault occurs if the “remote reset”, “remote calibrate”, or the magnetic switch is closed for
more than two minutes.
NOTE: If the ARGC is enabled, the grounded calibration switch does not go to fault.
ACTION: Check the wiring on the remote reset and remote calibrate switches. Once the
34
Model S4000CH
short circuit is cleared, the unit will return to normal operation. If the magnetic switch is
shorted, the unit must be returned to the factory or authorized service center for service.
5.1.10 F11 Internal Error
ACTION – An internal error has occurred. The unit must be returned to the factory for
service. The possible errors are internal voltages are not at their proper values.
5.1.11 F12 ARGC fault
This error can only occur if the ARGC is enabled. This error implies something is wrong with
the ARGC system (plunger stuck open or closed) or the sensor is poisoned.
ACTION - The sensor and ARGC should be inspected. Recalibration removes the errors. If
recalibration does not remove the F12 error, the operator must inspect the ARGC and make
sure the gas tank is not empty, the gas line is not leaking, and the regulator is at the proper
setting. You can then apply the magnet over the display to clear the F12 error.
5.2 General Monitors’ Offices
Area
UNITED STATES
Corporate Office:
26776 Simpatica Circle
Lake Forest, CA 92630
Phone/Fax/Email
Toll Free: +1-800-446-4872
Phone: +1-949-581-4464
Fax:
+1-949-581-1151
Email: info@generalmonitors.com
9776 Whithorn Drive
Houston, TX 77095
Phone: +1-281-855-6000
Fax:
+1-281-855-3290
Email: gmhou@generalmonitors.com
UNITED KINGDOM
Heather Close
Lyme Green Business Park
Macclesfield, Cheshire,
United Kingdom, SK11 0LR
Phone: +44-1625-619-583
Fax:
+44-1625-619-098
Email: info@generalmonitors.co.uk
IRELAND
Ballybrit Business Park
Galway
Republic of Ireland
Phone: +353-91-751175
Fax:
+353-91-751317
Email: info@gmil.ie
SINGAPORE
No. 2 Kallang Pudding Rd.
#09-16 Mactech Building
Singapore 349307
Phone: +65-6-748-3488
Fax:
+65-6-748-1911
Email: genmon@gmpacifica.com.sg
MIDDLE EAST
P.O. Box 61209
Jebel Ali, Dubai
United Arab Emirates
Phone: +971-4-8143814
Fax:
+971-4-8857587
Email: gmme@generalmonitors.ae
Table 8: GM Locations
35
Model S4000CH
6.0 Modbus Interface
6.1 Baud Rate
The Baud Rate is selectable via the Modbus Communications Interface. The selectable baud
rates are 19200, 9600, 4800, or 2400 bits per second.
6.2 Data Format
The Data Format is selectable via the Modbus Communications Interface. The selectable data
formats are as follows:
Data Bits
8
8
8
8
Parity
None
Even
Odd
None
Stop Bit
1
1
1
2
Format
8-N-13
8-E-1
8-O-1
8-N-2
Table 9: Data Format
6.3 Modbus Read Status Protocol (Query/Response)
6.3.1 Modbus Read Query Message
Byte
1st
2nd
3rd
4th
5th
6th
7th
8th
Modbus
Slave Address
Function Code
Starting Address Hi**
Starting Address Lo**
No. of Registers Hi
No. of Registers Lo
CRC Lo
CRC Hi
Range
1-247* (Decimal)
03
00
00-FF (Hex)
00
01
00-FF (Hex)
00-FF (Hex)
Referenced to S4000CH
S4000CH ID (Address)
Read Holding Registers
Not Used by S4000CH
S4000CH Commands
Not Used by S4000CH
No. of 16 Bit Registers
CRC Lo Byte
CRC Hi Byte
*NOTE: Address 0 is reserved for broadcast mode and will not be supported at this time.
**NOTE: Start Address can be a maximum of 9999 Address Locations (0000-270E).
6.3.2 Modbus Read Response Message
Byte
1st
2nd
3rd
4th
5th
6th
7th
Modbus
Slave Address
Function Code
Byte Count
Data Hi
Data Lo
CRC Lo
CRC Hi
Range
1-247* (Decimal)
03
02
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
36
Referenced to S4000CH
S4000CH ID (Address)
Read Holding Registers
No. of Data Bytes
S4000CH Hi Byte Status Data
S4000CH Lo Byte Status Data
CRC Lo Byte
CRC Hi Byte
Model S4000CH
6.4 Modbus Write Command Protocol (Query/Response)
6.4.1 Modbus Write Query Message
Byte
1st
2nd
3rd
4th
5th
6th
7th
8th
Modbus
Slave Address
Function Code
Register Address Hi
Register Address Lo
Preset Data Hi
Preset Data Lo
CRC Lo
CRC Hi
Range
1-247* (Decimal)
06
00
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
Referenced to S4000CH
S4000CH ID (Address)
Preset Single Register
Not Used by S4000CH
S4000CH Commands
S4000CH Hi Byte Command Data
S4000CH Lo Byte Command Data
CRC Lo Byte
CRC Hi Byte
*NOTE: Address 0 is reserved for broadcast mode and will not be supported at this time.
**NOTE: Start Address can be a maximum of 9999 Address Locations (0000-270E)
6.4.2 Modbus Write Response Message
Byte
1st
2nd
3rd
4th
5th
6th
7th
8th
Modbus
Slave Address
Function Code
Register Address Hi
Register Address Lo
Preset Data Hi
Preset Data Lo
CRC Lo
CRC Hi
Range
1-247* (Decimal)
06
00
00-FF (Hex)
00-FF (Hex)
00-FF (Hex)
00-FF (Hex
00-FF (Hex)
Referenced to S4000CH
S4000CH ID (Address)
Preset Single Register
Not Used by S4000CH
S4000CH Commands
S4000CH Hi Byte Command Data
S4000CH Lo Byte Command Data
CRC Lo Byte
CRC Hi Byte
6.5 Function Codes Supported
• Function Code 03 (Read Holding Registers) is used to read status from the slave unit.
• Function Code 04 allows multiple registers to be read. You can use 3 or 4 for multiple
reads.
• Function Code 06 (Preset Single Register) is used to write a command to the slave unit.
6.6 Exception Responses and Exception Codes
6.6.1 Exception Response
In a normal communications query and response, the master device sends a query to the
S4000CH and the S4000CH receives the query without a communications error and handles
the query normally within the master device’s allowable timeout. The S4000CH then returns
a normal response to the master. An abnormal communications query produces one of four
possible events:
If the S4000CH does not receive the query due to a communications error, then no
response is returned from the S4000CH and the master device will eventually process
a timeout condition for the query.
If the S4000CH receives the query, but detects a communication error (CRC, etc.),
then no response is returned from the S4000CH and the master device will eventually
process a timeout condition for the query.
37
Model S4000CH
If the S4000CH receives the query without a communications error, but cannot
process the response to the master within the master’s timeout setting, then no
response is returned from the S4000CH. The master device will eventually process a
timeout condition for the query. In order to prevent this condition from occurring,
the maximum response time for the S4000CH is 200 milliseconds. Therefore the
master’s timeout setting should be set to 200 milliseconds or greater.
If the S4000CH receives the query without a communications error, but cannot
process it due to reading or writing to a non-existent S4000CH command register,
then the S4000CH will return an exception response message informing the master of
the error.
Byte
1st
2nd
3rd
Modbus
Slave Address
Function Code
Exception Code
Range
1-247* (Decimal)
83 or 86 (Hex)
01 - 06 (Hex)
4th
5th
CRC Lo
CRC Hi
00-FF (Hex)
00-FF (Hex)
Referenced to S4000CH
S4000CH ID (Address)
MSB is set with Function Code
Appropriate Exception Code
(See Below)
CRC Lo Byte
CRC Hi Byte
The exception response message (ref. No. 4 above) has two fields that differentiate it from a
normal response:
6.6.2 Exception Code
Exception Code Field: In a normal response, the S4000CH returns data and status in the
data field, which was requested in the query from the master. In an exception response, the
S4000CH returns an exception code in the data field, which describes the S4000CH
condition that caused the exception. Below is a list of exception codes that are supported by
the S4000CH:
Code
01
Name
Illegal Function
02
Illegal Data Address
03
Illegal Data Value
04
Slave Device Failure
05
Acknowledge
06
Device Busy
Description
The function code received in the query is not an
allowable action for the S4000CH.
The data address received in the query is not an
allowable address for the S4000CH.
A value contained in the query data field is not an
allowable value for the S4000CH.
An unrecoverable error occurred while the
S4000CH was attempting to perform the
requested action.
The S4000CH has accepted the request and is
processing it, but a long duration of time will be
required to do so. This response is returned to
prevent a timeout error from occurring in the
master.
The S4000CH is engaged in processing a longduration program command. The master should
retransmit the message later when the slave is
free.
Table 10: Exception Codes
38
Model S4000CH
6.7 S4000CH Command Register Locations
Parameter
Analog
Mode
Status/Error
Not Used
Analog
Mode
Error 2
Error 1
Sensor Life
0-20mA Current Output
Indicates and Controls Mode
Indicates Errors
N/A
Identifies the S4000C in
Decimal
Indicates the Software
Revision
Returns Analog, Mode, Status,
Error, and Sensor Life Returns
Address 6,7,8
Analog 2
Mode
Error 2
Error 1
Sensor Life
Display
Display
Display
Serial Number
Serial Number
Display
(Mid & LSD)
Upper Serial Number
Lower Serial Number
Read or Change settings for
the high alarm
Read or change settings for
the low alarm
Read or change settings for
the Com1 Address
Read or change settings for
the Com1 Baud Rate
Read or change settings for
the Com1 Data Format
Read or change settings for
the Com2 Address
Read or change settings for
the Com2 Baud Rate
Read or change settings for
the Com2 Data Format
Read or change settings for
the calibration level
Reset latched Alarm & Warn
Remaining Sensor Life
Not Used
Indicate Calibration Success
Enable/Disable ARGC
Enable/Disable Cal Input
Turn on/off Gas Solenoid
Unit Type
Software Rev
Status Block
Alarm Settings
Warn Settings
Com1 Addr
Com1 Baud
Com1 Data
Format
Com2 Addr
Com2 Baud
Com2 Data
Format
Cal Level
Reset Alarms
Sensor Life
HazardWatch
ARGC
Enb Cal Input
Sol ON/OFF
Value
Bit
Bit
16-Bit
R
R/W
R
0000
0001
0002
0003
Master
I/O
Address
40001
40002
40003
40004
Value
16-Bit
R
0004
40005
ASCII
2-Char
R
0005
40006
Multi
6-bytes
R
0006
40007
R
R
R
R
R
0006
0006
0007
0007
0008
40007
40007
40008
40008
40009
R
0009
40010
R
R
R
000A
000B
000C
40011
40012
40013
Function
(LED & MSD)
Type
Scale
Value
Bit
Bit
Bit
Value
Bit
/ASCII
ASCII
Value
32 Bit
Access
Register
Address
Bit
(0-15)
R/W
000D
40014
Bit
(0-15)
R/W
000E
40015
Value
8-Bit
R/W
000F
40016
Bit
(0-7)
R/W
0010
40017
Bit
(0-7)
R/W
0011
40018
Value
8-Bit
R/W
0012
40019
Bit
(0-7)
R/W
0013
40020
Bit
(0-7)
R/W
0014
40021
Value
25 - 90
R/W
0015
40022
Bit
Value
(0)
25 - 100
W
R/W
Value
Bit
Value
Value
8-bit
1/0
1/0
R/W
R/W
R/W
R/W
0016
0017
0018
0019
001A
001B
001C
40023
40024
40025
40026
40027
40028
40029
39
10, 20, 30
Model S4000CH
Parameter
Function
Type
Scale
Access
Register
Address
HART EN/DE
Enable/Disable
Transmit a constant 1 or 0
signal
Bit
1/0
R/W
001D
Master
I/O
Address
40030
Value
0,1,2
R/W
001E
40031
Total # of Receive Errors
Value
8-Bit
R
0020
40033
R
0021
40034
HART Test
Ch1Total
Receive Errors
Ch1Bus Activity
Rate %
Ch1Function
Code Errors
Ch1Starting Addr
Errors
Ch1No of
Register Errors
RXD CRC Errors
Bus Activity Rate in % of This
Addressed Node vs. Other
Addressed Nodes
Total # of Function Code
Errors
Total # of Starting Address
Errors
Decimal
Value
8-Bit
R
0022
40035
Value
8-Bit
R
0023
40036
Total # of Register Errors
Value
8-Bit
R
0024
40037
Total # of RXD CRC Errors
Total # of RXD CRC Errors
Same as 38
Total parity errors
Value
16-Bit
R
0025
40038
Value
16-Bit
R
0026
40039
Value
16-Bit
R
0027
40040
Total overrun errors
Value
16-Bit
R
0028
40041
Total Framing errors
Value
16-Bit
R
0029
40042
Total Software request errors
Value
16-Bit
R
002A
40043
Bit
Bit
Bit
1/0
(0)
(0)
R/W
W
W
002B
002C
002D
40044
40045
40046
Value
1/0
R/W
002E
40047
Not used
Event Timer
Event Timer
New Sensor Calibration
Clear Ch1 Hardware Errors
Clear Ch 1 Software Errors
Allow the current to go from
full scale to 1.25 ma while in
HART mode. Normal HART
current is full scale to 3.5 ma.
Internal use only
Event Set Time Hi
Event Set Time Lo
002F
0030
0031
40048
40049
40050
User Info
User Info
See Event CHART
Clear Event
User information 1
User information 2
005F
0060
0061
40096
40097
40098
User information 16
006F
40112
0070
40113
RXD CRC Errors
Ch1 Parity Errors
Ch1 Overrun
Errors
Ch1 Framing
Errors
Ch1 Software
Errors
New Sensor
Clear CH1 Errors
Clear Ch1 Errors
HART Current
Select
User info
Ch2 Total
Receive Errors
Ch2 Bus Activity
Rate %
Total # of Receive Errors
Bus Activity Rate in % of This
Addressed Node vs. Other
Addressed Nodes
Value
16-Bit
R
40114
Decimal
40
R
0071
Model S4000CH
Parameter
Function
Ch2 Function
Code Errors
Ch2 Starting
Addr Errors
Ch2 No of
Register Errors
Ch2
Ch2
Ch2 Parity Errors
Ch2 Overrun
Errors
Ch2 Framing
Errors
Ch2 Software
Errors
Ch2 Clear Errors
Ch2 Clear Errors
Total # of Function Code
Errors
Total # of Starting Address
Errors
Type
Scale
Access
Register
Address
Master
I/O
Address
Value
16-Bit
R
0072
40115
Value
16-Bit
R
0073
40116
Total # of Register Errors
Value
16-Bit
R
0074
40117
CRC errors
CRC errors
Total parity errors
Value
Value
Value
16-Bit
16-Bit
16-Bit
R
R
R
0075
0076
0077
40118
40119
40120
Total overrun errors
Value
16-Bit
R
0078
40121
Total Framing errors
Value
16-Bit
R
0079
40122
Value
16-Bit
R
007A
40123
Bit
Bit
0
0
R/W
R/W
007C
007D
007E
40124
40125
40126
40127
Total Ch 2 Software request
errors
Not used
Ch2 Clear Hardware errors
Ch2 Clear Software errors
Not used
6.8 S4000CH Command Register Details
6.8.1 Analog (00h)
A read returns a value, which is proportional to the 0-20 mA output current. The current is
based on a 16-bit value. The scaling is 0 - 65535 decimal which corresponds to 0 - 21.7 mA.
6.8.2 Mode (01h)
A read returns the present mode of the S4000CH.
A write command changes the mode to the requested mode. A data value of 08 will start
calibration mode if the unit is in the run mode. It also will go from cal check to cal mode.
A write command with the data value of 04 will put the unit in Cal Check Mode if there are no
errors or alarms.
Exception: Returns an Exception Code 01 (illegal function) if an illegal write is requested.
Function
Calibration Complete
Spanning
Zero Complete, Waiting for Gas
Zeroing
Calibration Mode
Calibration Check Mode
Run Mode
Startup Mode
Bit Position
7 MSB
6
5
4
3
2
1
0 LSB
41
Hex value
80
40
20
10
08
04
02
01
Access
Read
Read
Read
Read
Read/Write
Read/Write
Read
Read
Model S4000CH
6.8.3 Status/Error (03h)
A read returns the alarm state and errors that are occurring at the present time, which are
indicated, by bit position.
Function
Alarm
Warn
Fault
Not Used
Not Used
ARGC
Internal error(2.5,15 Volts)
Switch Error
Setup Error
Calibration Check Timeout
EEPROM Error
EPROM Error
Sensor Error
Fail to Calibrate
Low Supply Voltage
Not used
Bit Position
15 MSB
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Hex value
0x8000
0x4000
0x2000
0x1000
0x0800
0x0400
0x0200
0x0100
0x0080
0x0040
0x0020
0x0010
0x0008
0x0004
0x0002
0x0001
Access
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
6.8.4 Unit Type (04h)
A read returns the decimal value 4004. This identifies the S4000CH.
6.8.5 Software Revision (05h)
A read returns the software revision of the S4000CH in 2 ASCII characters.
6.8.6 Status Block (06h)
A read returns a 6-byte message containing the Analog (2 bytes), Mode (1 byte),
Status/Error (2 bytes), and Sensor Life (1 byte) in that order. For the format of each byte,
refer to the appropriate individual commands.
NOTE: These registers can be read individually or as a group. Only when the starting
address is 06 is a block returned.
6.8.7 Analog Value (06h)
A value which is proportional to the 0-20 mA output current. The current is based on a 16-bit
value. The scaling is 0 - 65535 decimal which corresponds to 0 - 21.7 mA.
42
Model S4000CH
6.8.8 Mode & Error (07h)
See Mode (02)
Calibration Complete
Spanning
Zero Complete, Waiting for Gas
Zeroing
Calibration Mode
Calibration Check Mode
Run Mode
Startup Mode
Alarm
Warn
Error (any error)
NA
NA
ARGC
Internal
Switch
8000
4000
2000
1000
0800
0400
0200
0100
0080
0040
0020
0010
0008
0004
0002
0001
6.8.9 Error & Sensor Life (08h)
6.8.9.1
Upper 8 Bits for Sensor Errors (Hexadecimal)
Setup error
80
Cal Check error
40
EEPROM Check sum error
20
Flash Check sum
10
Sensor
08
Calibration error
04
Low supply
02
NA
01
6.8.9.2
Lower 8 Bits for Sensor Life
Sensor Life
0-100%
6.8.10 Display (0x09h & 0x0Ah)
The display is also present on the Modbus. It is at address 0x09 and 0x0A. The first
address (0x09) contains the LED, the decimal point location, and the Most Significant Digit
(MSD). The upper word represents the LED and decimal point. They are defined as shown
below. The lower word is the ASCII value for the MSD. The second address (0x0A)
represents the middle digit (MID) and the Least Significant Digit (LSD) in ASCII. The upper
word represents the MID and the lower word represents the LSD.
DP_LSD
DP_MID
DP_MSD
WRN_LED
ALM_LED
0x01
0x02
0x04
0x08
0x10
43
Model S4000CH
6.8.11 Serial Number (0Bh/0Ch)
The serial number is a 32-bit word but the value is only 23 bits long. The upper bits are
always zero. This is done to keep the same serial number as the HART serial number.
Address 0x0C contains the lower part of the number and address 0X0B contains the upper
part.
6.8.12 Alarm Settings (0Dh)
If an alarm exists a write is not allowed and a device exception code is returned.
A read returns the present Alarm settings of the S4000CH. A write command changes the
settings to the requested values. The set points are programmable in 5% FS steps.
NOTE: The maximum alarm setting for the S4000CH is 60% LEL.
A 1 in the 9th bit position means the output is Latching, a 0 means it is Non-Latching. A 1 in
the 8th bit position means the output is normally Energized a 0 means it is normally DeEnergized. The Alarm set point cannot be set below the Warn set point.
Factory default is 60% FS, Latching, De-Energized.
Exception: Returns an Exception Code 01 (Illegal Function) if an illegal write is requested.
Byte
High
Low
Function
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Latching/NonLatching
Energized/DeEnergized
Set point
Bit Position
15 MSB
14
13
12
11
10
9
Access
Read
Read
Read
Read
Read
Read
R/W
8
R/W
(7-0)
R/W
6.8.13 Warn Settings (0Eh)
A read returns the present Warn settings of the S4000CH. A write command changes the
settings to the requested values. The set points are programmable in 5% FS steps.
NOTE: The maximum warn setting for the S4000CH is 60% LEL.
A 1 in the 9th bit position means the output is Latching, a 0 means it is Non-Latching. A 1 in
the 8th bit position means the output is normally Energized, a 0 means it is normally DeEnergized. The Warn set point cannot be set above the Alarm set point.
Factory default is 30% FS, non-latching, de-energized.
44
Model S4000CH
Exception: Returns an Exception Code 01 (Illegal Function) if an illegal write is requested.
Function
Not Used
Not Used
Not Used
Not Used
Not Used
Not Used
Latching/NonLatching
Energized/DeEnergized
Set point
Byte
High
Low
Bit Position
15 MSB
14
13
12
11
10
9
Access
Read
Read
Read
Read
Read
Read
R/W
8
R/W
(7-0)
R/W
6.8.14 Com1 Address (0Fh)
A read command returns the current address for Com1. A write command changes the
address to the requested value. Valid addresses are 1-247 decimal. Factory default is 1.
Exception: If the address is not in range, an illegal data value (03) is returned.
6.8.15 Com1 Baud Rate (10h)
A read command returns the current baud rate for Com1. A write command changes the
baud rate to the requested values. Valid settings are shown in the table below. Factory
default is 19,200.
Baud Rate
Value
Val(Hex)
Access
2400
4800
9600
19,200
24
48
96
192
18
30
60
C0
Read/Write
Read/Write
Read/Write
Read/Write
Table 11: Com1 Baud Rate
Exception: If the baud rate is not in range, an illegal data value (03) is returned.
6.8.16 Com1 Data Format (11h)
A read command returns the current data format for Com1. A write command changes the
data format to the requested values. Valid settings are shown in the table below. Default
format is 8-N-1.
Data
8
8
8
8
Parity
None
Even
Odd
None
Stop
1
1
1
2
Format
8-N-1
8-E-1
8-O-1
8-N-2
Data(Bits 8-9)
0
1
2
3
Access
Read/Write
Read/Write
Read/Write
Read/Write
Table 12: Com1 Data Format
Exception: If the data format is not in range, an illegal data value (03) is returned.
45
Model S4000CH
To restore all serial bus defaults:
• Hold the reset input low and turn on the power (F10 error may be displayed).
• Address factory default is 1.
• Baud rate factory default is 19,200.
• Format factory default is 8-N-1.
COM 2 is user selectable to HART or Modbus if the unit is ordered with HART. HART
or Modbus is selectable via Modbus or the display. For additional information on HART, see
the S4000CH HART manual.
When HART is selected there are changes to comply with the HART requirements. Since
HART does not allow low current the actual current does not go below 3.5 mA. Modbus
reports the analog output as if HART was not there. This allows users to use a constant
program. The digital HART reports the actual current.
Current Level (mA)
Function
Start Up (SU)
Fault
HazardWatch
Cal Check
Calibrate
Gas
Over range
Negative drift (0 to -9% LEL)
Analog
Output
(Standard)
4
0
3.2
1.5
1.5
4-20
21.7
2.56
Modbus
4
0
3.2
1.5
1.5
4-20
21.7
2.56
HART
(Default)
4
3.5
3.5
3.5
3.5
4-20
21.7
3.5
HART
Modified
Analog Output
4
1.25
3.2
1.5
1.5
4-20
21.7
2.56
Table 13: Current Chart
On HART equipped units, the user must select the HART – modified analog output in order
to use analog values that are standard with gas detection equipment.
6.8.17 Com2 Address (12h)
A read command returns the current address for Com2. A write command changes the
address to the requested values. Valid addresses are 1-247 decimal. Factory default is 2.
Exception: If the address is not in range, an illegal data value (03) is returned.
6.8.18 Com2 Baud Rate (13h)
A read command returns the current baud rate for Com2. A write command changes the
baud rate to the requested values. Valid settings are shown in the table below. Factory
default is 19,200.
46
Model S4000CH
Baud Rate
2400
4800
9600
19,200
Value
24
48
96
192
Value(Hex)
18
30
60
C0
Access
Read/Write
Read/Write
Read/Write
Read/Write
Table 14: Com2 Baud Rate
Exception: If the baud rate is not in range, an illegal data value (03) is returned.
6.8.19 Com2 Data Format (14h)
A read command returns the current data format for Com2. A write command changes the
data format to the requested values. Valid settings are shown in the table below. Factory
default is 8-N-1.
Data
8
8
8
8
Parity
None
Even
Odd
None
Stop
1
1
1
2
Format
8-N-1
8-E-1
8-O-1
8-N-2
Data(Bits 9-8)
0
1
2
3
Access
Read/Write
Read/Write
Read/Write
Read/Write
Table 15: Com2 Data Format
Exception: If the data format is not in range, an illegal data value (03) is returned.
To restore serial bus defaults:
•
Hold the reset input low and turn on the power
•
Address factory default is 2
•
Baud rate factory default is 19,200.
•
Format factory default is 8-N-1.
6.8.20 Calibration Level (15h)
A read returns the current settings for the calibration level. A write changes the calibration
level that will be used during the next and subsequent calibrations. Valid levels are 25 to 90.
6.8.21 Reset Alarms (16h)
A write to this register with a data value of 1 will reset any latched alarms provided the
current gas level is below the alarm set point.
On the S4000CH it will also reset the latching over-range function provided the gas level is
below 100% LEL.
6.8.22 Sensor Life (17h)
A read returns the current estimate of remaining sensor life in percentage.
47
Model S4000CH
6.8.23 HazardWatch (Co – Calibration Output) (19h)
HazardWatch indicates when a successful calibration takes place. In HazardWatch mode
the current goes to 3.2 mA for 5 seconds then to 4.0 mA. An aborted calibration would go
straight to 4.0 mA. A read to this register will return the status of the HazardWatch option.
0x01 enables this option, 0x00 disables this option, similar to the write.
NOTE: When HART is in use, the current does not go to 3.2 mA but stays at 3.5 mA.
6.8.24 ARGC (1Ah)
The Automatic Remote Gas Calibrator is enabled or disabled by this command. A “1”
enables the ARGC option and a “0” disables the option.
NOTE: When the ARGC is enabled the remote calibration input does not function.
6.8.25 PLC Remote Gas Calibration
The Enable Sol and Sol ON/OFF functions work together. Their use is to allow a PLC to
turn on and off gas during a calibration or gas check. The PLC would look at the MODE
register and activate or deactivate a calibration gas control valve.
6.8.25.1 Enable Sol (1Bh)
This function is a built-in safety feature. The solenoid must be enabled first before it can
be activated. This disables the remote cal function and enables the solenoid.
A “0” enables the remote calibration (Normal) and disables the solenoid. A “1”
disables the remote calibration and enables the solenoid.
6.8.25.2 Sol ON/OFF (1Ch)
To use this function, it must first be enabled by the Enable Sol function.
Solenoid on
10
Solenoid off
20
Return to normal
30
If the read command returns a 30, then the Sol ON/OFF function is not enabled.
NOTE: If the ARGC is enabled, the solenoid cannot be used and an exception will be
returned.
6.8.26
HART Enable (1Dh)
This command enables or disables the HART. A “0” is Modbus and a “1” is HART.
6.8.27
HART Test (1Eh)
This command is used to test the HART output. It produces constant zeros or constant ones
on the HART output.
48
Model S4000CH
Code
Results
0
1
2
Normal
Constant ones
Constant zeros
6.8.28 Abort Calibration (1Fh)
Sending a “1” will abort calibration.
6.8.29 Total Receive Errors (20h)
A read indicates the total Modbus Comm. Hardware Receive Errors that occurred in the
slave device. The maximum count is 65535 and then the counter will rollover to zero and
begin counting again. The total errors are an accumulation of the individual communication
errors listed below.
6.8.30 Bus Activity Rate % (21h)
A read indicates the Bus Activity Rate in percent of this Slave’s addressed node versus
other addressed nodes. Range of this value is in hex (0-64), which translates to decimal (0100%).
6.8.31 Function Code Errors (22h)
A read indicates the number of Function Code Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.32 Starting Address Errors (23h)
The counter is incremented for each address that does not equal the device address. A
read indicates the number of Starting Address Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.33 Number of Register Errors (24h)
A read indicates the Number of Register Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.34 RXD CRC Errors Hi (25h)
A read indicates the number of RXD CRC Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.35 RXD CRC Errors Lo (Same as Hi) (26h)
NOTE: Hi and Lo CRC errors are now reported in the same word. A read from either Hi or
Lo will return the same count.
6.8.36 Parity Errors (27h)
A read indicates the number of hardware UART Parity Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
49
Model S4000CH
6.8.37 Overrun errors (28h)
A read indicates the number of hardware UART Overrun Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
6.8.38 Framing Errors (29h)
A read indicates the number of hardware UART Framing Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
6.8.39 Total Software CH1 Errors (2Ah)
A read indicates the number of address or data errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.40 New Sensor Calibration (2Bh)
The new sensor calibration command performs a calibration only when the ARGC is
enabled, otherwise it returns an exception. It also tells the ARGC function this is a new
sensor and the data will be saved. Stored data may later be used to verify proper calibration.
NOTE: All new installations should perform this calibration.
6.8.41 Clear Hardware Errors (2Ch)
For clearing parity, framing and overrun errors.
6.8.42 Clear Communication Errors (2Dh)
6.8.42.1 Event Logging
Faults
Whenever the fault word changes the time will be recorded.
The time of the fault will be saved.
The quantity of faults will be saved in a counter.
When the fault is removed, it is not saved and the counter is not incremented.
A fault event is logged for every 30 seconds recorded.
There are a total of 10 event time stamps stored.
Warning
The time the gas level reaches the Warning level is recorded. Each time this happens a
counter is incremented. The end of the event is when the gas goes below 5%. The
counter is also saved. There are a total of 10 event time stamps stored.
Alarm
The time the gas level reaches the Alarm level is recorded. Each time this happens a
counter is incremented. The end of the event is when the gas goes below 5%. The
counter is also saved. There are a total of 10 event time stamps stored.
50
Model S4000CH
Calibration
The time a successful zero and calibration occurs is saved in the event log. A counter is
incremented for each successful calibration. If the unit fails Zero or Cal the event is not
recorded. If the calibration is aborted the event is also not recorded. Note the Zero and
Calibration are one operation in the S4000CH. There are a total of 10 event time stamps
stored.
Maintenance
The time a Check Calibration occurs is saved in the maintenance event log. Each
successful calibration increments the maintenance counter. There are a total of 10 event
time stamps stored.
Setting Clock
Please see table below.
Event Logging Registry Table
Address
(hex)
Parameter
Function
Data Type
Data range
Access
30
Seconds Time Hi
Seconds Time Hi
Numeric value
0 – 65535
Timer Sec
31
Seconds Time
Low
Seconds Time
Numeric value
0 – 65535
Timer sec
32
Real Time Clock
Year, Month
Read/Set year and
month of RTC
2 Numeric Values
0-99 year, 1 –
12 month
Timer Struct
33
Real Time Clock
Day, Hour
Read/Set day and
hour of RTC
2 Numeric Values
1 – 31 day, 0
– 23 hour
34
Real Time Clock
Minute, Second
Read/Set minutes
and seconds of
RTC
2 Numeric Values
0 – 59 minute,
0 – 59 second
Timer Struct
35
PowerCycleFlag
Read Power Cycle
Flag.
Numeric Value
1 – Time Not
Reset; 0 –
Time Was
Reset
Flag
36
Event Index
Event index of
Logged Event
Numeric value
0-9
Index
37
Warn
Seconds Time Hi for
warning event log
entries
Numeric value
0 – 65535
Warn
Seconds Time Hi
38
Seconds Time
Low
Seconds Time Low
for warning event
log entries
Numeric value
0 – 65535
Warn
39
Structure time Hi
Hi byte – year, low
byte – month for
warning event log
entries
Numeric value
0 – 65535
Warn
51
Model S4000CH
Address
(hex)
Parameter
Function
Data Type
Data range
Access
3A
Structure time
Mid
Hi byte – day, low
byte – hour warning
event log entries
Numeric value
0 – 65535
Warn
3B
Structure time
Low
Hi byte – min, low
byte – sec for
warning event log
entries
Numeric value
0 – 65535
Warn
3C
Reserved
Reserved
Numeric value
0
3D
Reserved
Reserved
Numeric value
0
3E
Warn Event
Count
Warning Event
Count
Numeric value
0 – 65535
Warn
3F
Alarm Seconds
Time Hi
Seconds Time Hi for
alarm event log
entries
Numeric value
0 – 65535
Alarm
40
Seconds Time
Low
Seconds Time Low
for alarm event log
entries
Numeric value
0 – 65535
Alarm
41
Structure time Hi
Hi byte – year, low
byte – month for
alarm event log
entries
Numeric value
0 – 65535
Alarm
42
Structure time
Mid
Hi byte – day, low
byte – hour alarm
event log entries
Numeric value
0 – 65535
Alarm
43
Structure time
Low
Hi byte – min, low
byte – sec for alarm
event log entries
Numeric value
0 – 65535
Alarm
44
Reserved
Reserved
Numeric value
0
45
Reserved
Reserved
Numeric value
0
46
Alarm Event
Count
Alarm Event Count
Numeric value
0 – 65535
Alarm
47
Fault
Seconds Time Hi for
fault event log
entries
Numeric value
0 – 65535
Fault
Seconds time Hi
48
Seconds time
Low
Seconds Time Low
for fault event log
entries
Numeric value
0 – 65535
Fault
49
Structure time Hi
Hi byte – year, low
byte – month for
fault event log
entries
Numeric value
0 – 65535
Fault
52
Model S4000CH
Address
(hex)
Parameter
Function
Data Type
Data range
Access
4A
Structure time
Mid
Hi byte – day, low
byte – hour alarm
event log entries
Numeric value
0 – 65535
Fault
4B
Structure time
Low
Hi byte – min, low
byte – sec for fault
event log entries
Numeric value
0 – 65535
Fault
4C
Fault code
Fault code. Same
code as register 2
Numeric value
0 – 65535
Fault
4D
Reserved
Reserved
Numeric value
0
4E
Fault Event Count
Fault Event Count
Numeric value
0 – 65535
4F
Maintenance
Seconds time Hi
Seconds Time Hi for
event log entries
50
Seconds time
Low
51
Fault
Maintenance
Numeric value
0 – 65535
Seconds Time Low
for event log entries
Numeric value
0 – 65535
Maintenance
Structure time Hi
Hi byte – year, low
byte – month for
event log entries
Numeric value
0 – 65535
Maintenance
52
Structure time
Mid
Hi byte – day, low
byte – hour event
log entries
Numeric value
0 – 65535
Maintenance
53
Structure time
Low
Hi byte – min, low
byte – sec for event
log entries
Numeric value
0 – 65535
Maintenance
54
Maintenance
code
Cal check
Numeric value
0
Maintenance
55
Reserved
Reserved
Numeric value
0
56
Maintenance
Count
Maintenance Count
Numeric value
0 – 65535
Maintenance
57
Calibrate
Seconds Time Hi
Seconds Time Hi for
event log entries
Numeric value
0 – 65535
Calibrate
58
Seconds Time
Low
Seconds Time Low
for event log entries
Numeric value
0 – 65535
Calibrate
59
Structure time Hi
Hi byte – year, low
byte – month for
event log entries
Numeric value
0 – 65535
Calibrate
5A
Structure time
Mid
Hi byte – day, low
byte – hour event
log entries
Numeric value
0 – 65535
Calibrate
53
Model S4000CH
Address
(hex)
Parameter
Function
Data Type
Data range
Access
5B
Structure time
Low
Hi byte – min, low
byte – sec for event
log entries
Numeric value
0 – 65535
Calibrate
5C
Calibrate code
Cal
Numeric value
0
Calibrate
5D
Reserved
Reserved
Numeric value
0
5E
Calibrate
Calibrate
Numeric value
0 – 65535
Calibrate
Count
Count
Reset Event
Counters
Reset Event
Counters
Numeric value
1
Reset
5F
6.8.43 User Information (60h to 6Fh)
There is a section in memory that allows the user to store information. This is useful if the
physical location or other user identification is required. The only restriction on the
information is it must be Modbus compatible. Only one word can be written per command.
There are a total of 16 words for the user.
6.8.44 Total Receive Errors (70h)
A read indicates the total Modbus Comm. Hardware Receive Errors that occurred in the
slave device. The maximum count is 65535 and then the counter will rollover to zero and
begin counting again. The total errors are an accumulation of the individual communication
errors listed below.
6.8.45 Bus Activity Rate % (71h)
A read indicates the Bus Activity Rate in percent of this Slave’s addressed node versus
other addressed nodes. Range of this value is in hex (0-64), which translates to decimal (0100%).
6.8.46 Function Code Errors (72h)
A read indicates the number of Function Code Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.47 Starting Address Errors (73h)
The counter is incremented for each address that does not equal the device address. A
read indicates the number of Starting Address Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.48 Number of Register Errors (74h)
A read indicates the Number of Register Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
54
Model S4000CH
6.8.49 RXD CRC Errors Hi (75h)
A read indicates the number of RXD CRC Errors that occurred in the slave device. The
maximum count is 65535 and then the counter will rollover to zero and begin counting again.
6.8.50 RXD CRC Errors Lo (Same as Hi) (76h)
NOTE: Hi and Lo CRC errors are now reported in the same word. A read from either Hi or
Lo will return the same count.
6.8.51 Parity Errors (77h)
A read indicates the number of Hardware UART Parity Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
6.8.52 Overrun Errors (78h)
A read indicates the number of Hardware UART Overrun Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
6.8.53 Framing Errors (79h)
A read indicates the number of Hardware UART Framing Errors that occurred in the slave
device. The maximum count is 65535 and then the counter will rollover to zero and begin
counting again.
6.8.54 Total software CH1 errors (7Ah)
A read indicates the number of Address or Data Errors that occurred in the slave device.
The maximum count is 65535 and then the counter will rollover to zero and begin counting
again.
55
Model S4000CH
7.0 Appendix
7.1 Warranty
General Monitors warrants the Model S4000CH to be free from defects in workmanship or
material under normal use and service within two years from the date of shipment.
General Monitors will repair or replace without charge any such equipment found to be
defective during the warranty period. Full determination of the nature of, and responsibility for,
defective or damaged equipment will be made by General Monitors’ personnel.
Defective or damaged equipment must be shipped to the General Monitors plant, or
representative from which the original shipment was made. In all cases, this warranty is limited
to the cost of the equipment supplied by General Monitors. The customer will assume all
liability for the misuse of this equipment by its employees, or other personnel.
All warranties are contingent upon proper use in the application for which the product was
intended and do not cover products which have been modified or repaired without General
Monitors’ approval or which have been subjected to neglect, accident, improper installation or
application, or on which the original identification marks have been removed or altered.
Except for the express warranty stated above, General Monitors disclaims all warranties with
regard to the products sold, including all implied warranties of merchantability and fitness, and
the express warranties stated herein are in lieu of all obligations or liabilities on the part of
General Monitors for damages including, but not limited to, consequential damages arising out
of, or in connection with, the performance of the product.
7.2 Principle of Operation
Many gases and vapors are combustible. General Monitors uses a low temperature catalytic
bead to detect the presence of combustible gases and vapors. The catalytic bead converts the
combustible materials to heat. A change in heat is then converted to a change in resistance,
which can be measured.
Taking a matched pair of catalytic beads and coating one so that it does not respond to the
presence of combustible gases can compare the change in resistance between the two beads.
The bead that is coated is called the reference bead and the other is called the active bead.
Because the beads are a matched pair, they will respond equally to changes in ambient
temperature, humidity, and pressure. This makes the sensor virtually immune to changing
environmental conditions.
By connecting one end of each catalytic bead together, a series circuit is formed. This circuit is
supplied with a constant current. The voltage drop across each of the beads will be identical in
the absence of combustible gases. As combustible material is converted to heat, the resistance
of the active bead increases, causing the voltage drop across each bead to be different. This
difference is proportional to the amount of combustible gas that is present.
56
Model S4000CH
The voltage from the sensor is amplified and fed to an Analog to Digital (A/D) converter and
then made available to the microprocessor. The baseline and the gain for the amplifier are set
using digital potentiometers. They are adjusted by the microprocessor during calibration.
7.3 Specifications
7.3.1 System Specifications
Continuous diffusion, low temperature catalytic
bead
3 to 5 years typical
+3% LEL up to 50% LEL
+5% LEL > 51% LEL
Sensor Type:
Sensor Life:
Accuracy:
Zero Drift:
Response Time:
Measuring Ranges:
Modes:
Approvals Classification:
Pressure Limits:
Warranty:
Less than 5% of full scale per year
T50<10 sec. T90<30 sec. with 100% LEL methane
applied
0-100% LEL
Calibration, gas check, setup
CSA/FM: Class I, Division 1, Groups B, C, D and
Class I, Zone 1, IIB+H2, T6 (Tamb=-40°C to +75°C)
ATEX/IECEx: II 2 G Ex d IIB+H2 T5 Gb
(Tamb=-40°C to +70°C) EN 60079-29-1
Up to 3 atmospheres, sensor requires 15 minutes
from start up to stabilize
Two years
7.3.2 Mechanical Specifications
Length:
Height:
Width:
Weight:
Mounting Holes:
Housing:
6.4 in (161 mm)
3.4 in (86 mm)
4.1 in (104 mm)
5.5 lbs (2.5 kg) AL, 14.0 lbs (6.4 kg) SS
5.0 inches (127mm) center to center
Aluminum alloy (6061-T6 cover, A356-T6 base) or
316 stainless steel
7.3.3 Electrical Specifications
Input Voltage:
Average Current
(No ARGC) 24 V:
30 volts:
20 volts:
Current ARGC only:
Power ARGC only:
Relay Ratings:
24 VDC nominal, 20 to 36 VDC
250 mA max.
200 mA including sensor, all relays on
175 mA including sensor, all relays on
228 mA including sensor, all relays on
.035 mA in addition to S4000CH current
.85 Watts This is additional power required by the ARGC
8 A @ 250 VAC/8 A @ 30 VDC resistive max.
(3x) SPDT - Warning, Alarm & Fault
57
Model S4000CH
0-20 mA (650 Ohms max. load) All readings +0.05 mA
HART not
HART
Mode
HART
enabled
modified AO
Malfunction
0 mA
3.5 mA
1.25mA
Calibration
1.5 mA
3.5 mA
1.5 mA
Gas Check
1.5 mA
3.5 mA
1.5 mA
Setup
1.5 mA
3.5 mA
1.5 mA
Startup
4.05 mA
4.05 mA
4.05 mA
Zero reading
4.05 mA
4.05 mA
4.05 mA
0-100% LEL
4-20 mA
4.0 – 20 mA
4.0 – 20 mA
Over-range
20-22 mA
20 – 21.7 mA
20 – 21.7 mA
Three-digit digital display with gas concentration, Warn and Alarm
LED’s, calibration prompts, fault codes, and setup options.
Dual Redundant Modbus RTU, suitable for linking up to 128 units
or up to 247 units with repeaters.
Fully HART Compliant. User selectable between HART and
Modbus. HART current source Rx = 100KΩ Cx = 2nF.
2400, 4800, 9600, or 19200 BPS
Calibration error, sensor error, low DC supply, EEPROM,
EPROM, setup error, gas check time exceeded, switch error,
ARGC, and internal problem.
Complies with EN 50270, EN 61000-6-4
Analog Signal:
Status Indicators:
RS-485 Output
(Optional):
HART
(Optional):
Baud Rate:
Faults Monitored:
EMC Protection:
7.3.4 Cable Requirements
Cable Requirements: (w/out ARGC & with relays)
3-wire shielded cable. Max. Distance between S4000CH and power source @ 24 VDC
nominal.
AWG
12*
14
16
18
20
Ohms/1K
1.588
2.525
4.016
6.385
10.15
FEET
4143
2606
1638
1030
648
METERS
1263
794
499
314
198
Table 16: 24 VDC Cable Lengths with Relays
* Screw terminals only
Cable Requirements (w/out ARGC & w/out Relays)
3-wire shielded cable. Max. Distance between S4000CH and power source @ 24 VDC
nominal.
AWG
12*
14
16
18
20
Ohms/1K
1.588
2.525
4.016
6.385
10.15
FEET
4541
2856
1796
1129
710
METERS
1384
871
547
344
217
Table 17: 24 VDC Cable Lengths w/o Relays
* Screw terminals only
58
Model S4000CH
Cable Requirements: (with ARGC & with Relays)
3-wire shielded cable. Max. Distance between S4000CH and power source @ 24 VDC
nominal.
AWG
12*
14
16
18
20
Ohms/1K
1.588
2.525
4.016
6.385
10.15
FEET
3661
2303
1448
911
573
METERS
1116
702
441
278
175
Table 18: ARGC Cable Lengths
* Screw terminals only
Max. distance for analog output (650 Ohms max):
AWG
14
16
18
20
FEET
9000
5200
3800
2400
METERS
2740
1585
1160
730
Table 19: Analog Output Cable Lengths
NOTE: The analog circuit can tolerate a negative output up to -5 volts.
7.3.5 Remote Sensor Cable Lengths
The remote sensor can have up to 1.5 Ohms in each wire. The wires must be of equal
length and size.
NOTE: The power wiring length is reduced by 10% due to loss in sensor wiring.
AWG
Ohm/1000 ft
Feet
Meters
12
1.588
1007
307
14
2.525
633
193
16
4.016
398
121
18
6.385
250
76
20
10.15
157
48
Table 20: Sensor Cable Lengths
European Union (EU) Approved Applications: PSU noise and ripple voltage 1.0 Vpp
max. The customer supplied PSU must comply with IEC 1010-1, limiting current to 8 A
under fault conditions, in order to comply with CE Marking requirements.
59
Model S4000CH
7.3.6 Environmental Specifications
Operating Temperature
Range
CSA
FM
ATEX/IECEx
Electronics
-40°F to 167°F
(-40°C to 75°C)
-40°F to 167°F
(-40°C to 75°C)
-40°F to 158°F
(-40°C to 70°C)
Storage Temperature
Range
-58°F to 185°F (-50°C to +85°C)
Operating Humidity
Range
10% to 95% RH, non-condensing
Atmosphere
Will not operate in <5% Oxygen. Oxygen enriched
reading may be slightly higher
7.4 Approvals
CE Marking, CSA, FM, ATEX, IECEx and GOST approved. Complies with ANSI/ISA12.13.01-2000, CSA 22.2 No. 152 and EN 60079-29-1 performance requirements. SIL 2/3
suitable (use in typical environments has a lower safety rating than in clean environments).
HART Registered.
HART:
• Approved by the HART Communication Foundation.
• Compatible with Emersion 375 Field Communicator.
• Listed in Emerson Process Management’s Aware device list
7.5 Sensitivities to Other Gases
The S4000CH responds to the following list of hydrocarbons up to C10.
Gases
Acetylene
Ammonia
1,3- Butadiene
Butane
iso-Butane
1-Butene (Butylene)
cis-Butene-2
trans-Butene-2
iso-Butylene
Carbon Monoxide
Dimethylamine
Ethane
Ethylene Oxide
Ethylene (Ethene)
Hydrogen
Methane
Propane
Propylene (Propene)
Trimethylamine
Vinyl Chloride (Chloroethylene)
Acetaldehyde
%LEL
2.5
15.0
2.0
1.9
1.8
1.6
M.W.
26.0
17.0
54.1
58.1
58.1
56.1
Density
***
***
***
***
***
***
1.7
1.8
1.8
12.5
2.8
3.0
3.0
2.7
4.0
5.0
2.1
2.0
2.0
3.6
4.0
56.1
56.1
56.1
28.0
45.1
30.1
44.0
28.1
2.0
16.0
44.1
42.1
59.1
62.5
44.1
***
***
***
***
***
***
***
***
***
***
***
***
***
***
0.8
60
Injection volumes
50%lel/3L
50%lel/5L
37.5 ml
62.5 ml
225.0 ml
375.0 ml
30.0 ml
50.0 ml
28.5 ml
47.5 ml
27.0 ml
45.0 ml
24.0 ml
40.0 ml
25.5 ml
27.0 ml
27.0 ml
187.5 ml
42.0 ml
45.0 ml
45.0 ml
40.5 ml
60.0 ml
75.0 ml
31.5 ml
30.0 ml
30.0 ml
54.0 ml
136 µl
42.5 ml
45.0 ml
45.0 ml
312.5 ml
70.0 ml
75.0 ml
75.0 ml
67.5 ml
100.0 ml
125.0 ml
52.5 ml
50.0 ml
50.0 ml
90.0 ml
228 µl
Cal Ratio
Methane Propane
0.8
1.1
1.3
1.7
0.8
1.1
0.7
0.9
0.6
0.8
0.7
0.9
0.7
0.7
0.7
0.9
0.6
0.8
1.0
0.8
0.8
1.0
0.8
0.8
0.6
0.7
0.7
0.9
0.9
0.9
1.2
0.8
1.1
1.3
1.1
1.1
1.3
1.0
1.0
0.8
0.9
0.9
Model S4000CH
Gases
Acetic Acid
Acetone
Acetic Acid
Acetone
Acetonitrile
Acrylonitrile
Amyl Acetate
Benzene
Butyl Acetate
Butyl Alcohol (1- Butanol)
sec-Butyl Alcohol (2-Butanol)
tert- Butyl Alcohol
Butyraldehyde
Cyclohexane
Diethyl Ketone (3-Pentanone)
p-Dioxane
Ethyl Acetate
Ethyl Amine
Ethyl Benzene
Ethyl Ether
Gasoline
Heptane
Hexane
Isopentane (2-Methylbutane)
Isoprene (2-Methyl-1, 3-Butadiene)
JP-4 (Jet fuel)
Methanol (Methyl Alcohol)
Methyl Ethyl Ketone (2-Butanone)
Methyl Methacrylate
Methyl-t-Butyl Ether(MTBE)
Naphtha (Petroleum Ether)
Octane
Pentane
2-Propanol (Isopropyl Alcohol)
Propanol (Propyl Alcohol)
Propylacetate
Propylamine
Propylene Oxide
Styrene (Vinyl Benzene)
Tetrahydrofuran
1,1,1-Toluene (Methylbenzene,
Toluol)
Triethylamine
o-Xylene
p- Xylene
m- Xylene
Xylenes
Injection volumes
50%lel/3L
50%lel/5L
140 µl
234 µl
112 µl
187 µl
140 µl
234 µl
112 µl
187 µl
96 µl
160 µl
120 µl
201 µl
100 µl
167 µl
65 µl
109 µl
137 µl
228 µl
78 µl
131 µl
95 µl
159 µl
138 µl
231 µl
102 µl
171 µl
86 µl
143 µl
103 µl
173 µl
104 µl
174 µl
119 µl
199 µl
140 µl
234 µl
60 µl
100 µl
120 µl
200 µl
107 µl
179 µl
94 µl
157 µl
86 µl
144 µl
99 µl
166 µl
89 µl
149 µl
183 µl
306 µl
148 µl
248 µl
76 µl
128 µl
111 µl
186 µl
109 µl
182 µl
96 µl
161 µl
99 µl
166 µl
105 µl
176 µl
93 µl
156 µl
100 µl
168 µl
106 µl
177 µl
103 µl
172 µl
98 µl
164 µl
63 µl
105 µl
99 µl
166 µl
Cal Ratio
Methane Propane
0.5
0.7
0.6
0.8
0.5
0.7
0.6
0.8
0.7
0.9
0.8
1.1
0.3
0.4
0.6
0.8
0.5
0.7
0.4
0.5
0.4
0.5
0.7
1.0
0.5
0.7
0.6
0.8
0.5
0.7
0.5
0.6
0.6
0.8
0.5
0.6
0.5
0.6
0.7
0.9
0.5
0.7
0.5
0.6
0.5
0.6
0.6
0.8
0.6
0.8
0.3
0.4
0.8
1.1
0.6
0.8
0.6
0.7
0.6
0.8
0.6
0.8
0.5
0.6
0.6
0.8
0.6
0.8
0.6
0.7
0.5
0.7
0.6
0.8
0.7
1.0
0.5
0.6
0.7
0.9
%LEL
4.0
2.5
4.0
2.5
3.0
3.0
1.1
1.2
1.7
1.4
1.7
2.4
1.9
1.3
1.6
2.0
2.0
3.5
0.8
1.9
1.4
1.1
1.1
1.4
1.5
1.3
6.0
1.4
1.70
1.5
1.1
1.0
1.5
2.0
2.2
1.7
2.0
2.3
0.9
2.0
M.W.
60.1
58.1
60.1
58.1
41.1
53.1
130.2
78.1
116.2
74.1
74.1
74.1
72.1
84.2
86.1
88.1
88.1
45.1
106.2
72.2
100.2
100.2
86.2
72.2
68.1
184.4
32.0
72.1
100.1
88.2
86.2
114.2
72.2
60.1
60.1
102.1
59.1
58.1
104.2
72.1
Density
1.0
0.8
1.0
0.8
0.8
0.8
0.9
0.9
0.9
0.8
0.8
0.8
0.8
0.8
0.8
1.0
0.9
0.7
0.9
0.7
0.8
0.7
0.7
0.6
0.7
0.8
0.8
0.8
0.9
0.7
0.6
0.7
0.6
0.8
0.8
1.0
0.7
0.8
0.9
0.9
1.1
101.2
0.9
78 µl
131 µl
0.5
0.7
1.2
0.9
1.1
1.1
1.1
101.2
106.2
106.2
106.2
106.2
0.7
0.9
0.9
0.9
0.9
102 µl
68 µl
83 µl
83 µl
83 µl
171 µl
113 µl
139 µl
139 µl
139 µl
0.6
0.4
0.4
0.4
0.4
0.8
0.5
0.5
0.5
0.5
Table 21: Chemical List
61
Model S4000CH
7.6 Spare Parts and Accessories
To order spare parts and/or accessories, please contact the nearest General Monitors
representative, or General Monitors directly, and give the following information:
• Part Number of Spare Part or Accessory
• Description of Spare Part or Accessory
• Quantity of Spare Part or Accessory
7.6.1
Sensors
10001-1
10001-1R
10014-1
10015-1
10022-1
10058-1
10058-1R
10164-1
11159-1, 1L
11159-2, 2L
10102-1
7.6.2
Sensor Housing
10252-1
10252-3
7.6.3
Sensor Housing
Sensor Housing HT
Sensor Accessories
10041-1
50061-1
7.6.4
Standard Industrial Hydrocarbon
Poison Resistant
Standard Industrial Hydrocarbon High Temp
Standard Industrial Hydrocarbon High Temp Export
Version
Standard Industrial Hydrocarbon High Temp PTB
Standard Industrial Stainless Steel, Hydrocarbon
Standard Industrial Stainless Steel, Hydrocarbon, Poison
Resistant
Sensor Assembly, Hydrogen Specific
General Purpose, SST, Sintered Steel Arrestor
General Purpose, SST, High Temp, Sintered Steel Arrestor
Simulator Sensor
Duct Mounting Plate
Purafil Insert Assembly
Calibration Equipment
10543-1
928-700
928-715
1400150-M
1400150-H
1400150-BD
1400150-PR
1400155-M
1400155-H
1400155-BD
1400155-PR
80153-1
80135-1
80154-1
80155-1
32547-1
3-Liter Calibration Chamber with 250μL Syringe
Dish for the 3- Liter Chamber
250μL syringe
Portable Purge Calibrator, Methane @ 50% LEL
Portable Purge Calibrator, Hydrogen @ 50% LEL
Portable Purge Calibrator, Butadiene @ 50% LEL
Portable Purge Calibrator, Propane @ 50% LEL
Replacement Cylinder, Methane @ 50% LEL
Replacement Cylinder, Hydrogen @ 50% LEL
Replacement Cylinder, Butadiene @ 50% LEL
Replacement Cylinder, Propane @ 50% LEL
Remote Gas Calibrator (RGC)
High Temp Remote Gas Calibrator (RGC-HT)
Automatic Gas Calibrator (ARGC) - RGC w/Solenoid Valve
Remote ARGC – (ARGC w/Junction Box P/N 32547-1)
Junction Box with Connecting Board
62
Model S4000CH
Cylinder refills are available for Methane and Hydrogen only. Replacement cylinders
must be ordered for the other gases.
922-009
1400152-1
1400154
925-026
7.6.5
Pressure Regulator Gauge
Small Calibration Cup
Large Calibration Cup
Tubing
S4000CH Replacement Parts
Check Factory for options:
32461-1,2,3,4
32451-1,2
32441-1
32424-1
31195-2
30060-1
925-5007
7.6.6
Control Board Electronics
Output Board Electronics
Display Board Electronics
Enclosure Cover Assembly with Window
Enclosure Base Assembly
Calibration Magnet
Cover Assy. O-Ring
Recommended Spare Parts for One (1) Year
30060-1
Extra Calibration Magnet (Qty. 1)
63
Model S4000CH
7.7 FM Approval
Factory Mutual Research Corporation
1151 Boston-Providence Turnpike
Norwood, Massachusetts 02062
Approval of the transmitter does not include, or imply, approval of apparatus to which the
transmitter may be connected and which processes the electronic signal for the eventual
end use. In order to maintain FMRC approved system, the control instrument, to which the
subject instrument is connected, must be FMRC approved.
The following sensors have been FMRC approved for use with the Model S4000CH:
•
10001-1 Aluminum Body General Purpose Combustible Gas Sensor
•
10058-1 Stainless Steel Body General Purpose Combustible Gas Sensor
The following apparatus have been FMRC approved (although they have not been verified
as part of a Model S4000CH system):
•
Model DC110 Eight Channel Readout/Relay Display Module
Factory Mutual Research Corporation has tested the Model S4000CH according to the
criteria listed under the FMRC Approval Standards for Combustible Gas Detectors, Class
Numbers 6310 & 6320.
FMRC has tested the Model S4000CH using the specifications listed in Section 7.3. This
permits an operating temperature of -40°F to +167°F (-40°C to +75°C), a general purpose
sensor (10001-1 or 10058-1) attached to the housing (i.e. not remote), calibration performed
with a General Monitors Portable Purge Calibrator using 50% LEL gas (Methane, Hydrogen,
Butadiene, Butane, Ethane or Propane) and the procedure listed in Section 3.14. The
conduit containing wires connected to the relay contacts must be sealed. If the non-latching
relay option has been selected from the relay options, the user must provide alternate
means of latching the relay output.
64
Model S4000CH
ADDENDUM
Product Disposal Considerations
This product may contain hazardous and/or toxic substances.
EU Member states shall dispose according to WEEE regulations. For further General Monitors’ product
WEEE disposal information please visit: www.generalmonitors.com/faqs
All other countries or states: please dispose of in accordance with existing federal, state and local
environmental control regulations.
65