Yokogawa Model SC25F pH SENCOM® sensor Instruction Manual
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Instruction
Manual
Model SC25F
pH SENCOM® sensor
IM 12B6J1-41E-E
3rd edition
2
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IM 12B6J1-41E-E
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Contents
1. PREFACE
6
Introduction
Unpacking and Checking
Warranty and Service
Serial Number definition
6
6
6
7
2. GENERAL SPECIFICATIONS
8
1.1
1.2
1.3
1.4
2.1 Measuring elements
2.2 Wetted parts
2.3 Functional specifications (at 25°C)
2.4 Dynamic specifications
2.5 Operating range
2.6 Transmission signal (Data + and Data -)
2.7 Power supply (Supply+ versus Supply Gnd)
2.8 Regulatory standards
2.9 Shipping details
2.10 Environment and operational conditions
8
8
8
8
8
9
9
9
12
12
3 INSTALLATION OF SC25F
13
13
13
13
3.1 Typical installation
3.2 Preparing the sensor for use
3.3 Mounting the sensor
4 DIMENSIONS
16
5. WIRING
17
6. GENERAL CALIBRATION & MAINTENANCE PROCEDURE 17
6.1 Calibration for pH measurement
6.2 Maintenance of the SC25F sensor
17
18
7. MODEL CODE
19
8. SPARE PARTS
19
9. EU DECLARATION OF CONFORMITY
20
10. CHEMICAL COMPATIBILITY CHART
22
IM 12B6J1-41E-E
6
1. PREFACE
1.1 Introduction
This instruction manual provides information
for the installation and use of the SC25F
SENCOM® sensor. This digital sensor
shows how Yokogawa applies the motto
“Simply the Best” to sensor technology.
Setup of the sensor is very easy because
all sensor specific characteristics, such as
calibration data, are stored in the sensor.
The SC25F SENCOM® sensor holds four
separate measuring elements:
• pH glass electrode.
• Long life saturated Ag/AgCl reference
system.
• Integral Pt1000 element for accurate
temperature measurements.
• Solid Titanium LE electrode for accurate
pH measurements.
Other valuable features of the sensor:
• PTFE reference diaphragm to prevent
fouling.
• Polymerized electrolyte to extend the
sensor lifetime.
• Available in different versions, a
G-glass version for general purpose
applications, and a L-glass version for
harsh applications and high process
temperatures. Both the G-glass as the
L-glass version are available in two
different lengths, 120 mm and 225 mm.
•Versatile in-line, immersion or off-line
installation.
Optional quick-removal adapters in both
stainless steel and titanium are available
to make calibration and maintenance even
easier.
The SC25F is provided with a multipole
M9 male connector for connection to the
Yokogawa FLXA analyzer using the WU11
interconnection (and extension) cable for
SENCOM® sensors. This cable, available
in several lengths, is specified for reliable
transfer of digital signals and especially
designed to be installed in a heavy industrial
environment. The double shielded cable will
protect both the sensor and the analyzer for
IM 12B6J1-41E-E
interference from high voltages and currents
which are present on other cables.
1.2 Unpacking and Checking
Upon delivery, unpack the sensor carefully
and inspect it to ensure that it is not
damaged during shipment. If damage is
found, retain the original packing material
and immediately notify the carrier and the
relevant local Yokogawa Sales Office.
Make sure the Model Code and Serial
Number on the sensor are the same as on
the packing list. Also check if option(s) that
were ordered, are included and correct.
1.3 Warranty and Service
Yokogawa products are guaranteed free
from defects in workmanship and materials
under normal use and service for a period
of (typically) 12 months from the date of
shipment from the manufacturer. Individual
Sales organizations can deviate from the
typical warranty period, and the conditions
of sale relating to the original purchase
order should be consulted. Damage caused
by wear and tear, inadequate maintenance,
corrosion, or by the effects of chemical
processes is excluded from this warranty
coverage. In the event of a warranty claim,
the defective goods should be sent (freight
paid) to the Service Department of the
relevant Yokogawa Sales office for repair or
replacement (at Yokogawa’s discretion).
The following information must be included
in the letter accompanying the returned
goods:
• Model Code and Serial Number.
• Original Purchase Order and Date.
• Length of time in service and description
of the process.
• Description of the fault and circumstances
of the failure.
• Process/environmental conditions that
may be related to the failure of the sensor.
• Statement as to whether warranty or nonwarranty service is requested.
• Complete shipping and billing instructions
for return of material, plus the name and
7
phone number of a contact person that
can be reached for further information.
• Clean Statement
Returned goods that have been in
contact with process fluids must be
decontaminated and disinfected prior
to shipment. Goods should carry a
certificate to this effect, for the health and
safety of our employees. Material Safety
Data sheets must be included for all
components of the process to which the
sensor(options) have been exposed.
1.4 Serial Number definition
The Serial Number is defined by nine (9)
alphanumeric characters:
X1X2
Production Location
X3X4
Year/Month code
X5X6X7X8X9
Tracking number
Example: N3P600028
Method used for year/month numbering
Table 1: Production Year code
Table 2: Production Month code
Year
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Month
January
February
March
April
May
June
July
August
September
October
November
December
Year code Year
P
2026
R
2027
S
2028
T
2029
U
2030
V
2031
W
2032
X
2033
Y
2034
Z
2035
1
2036
2
2037
Year code
3
4
5
6
7
8
9
A
B
C
D
E
Month code
1
2
3
4
5
6
7
8
9
A
B
C
IM 12B6J1-41E-E
8
2. GENERAL SPECIFICATIONS
2.1 Measuring elements
2.2 Wetted parts
Sensor body
Measuring sensor
Reference junction
Earth pin
O-ring
:
:
:
:
pH glass electrode
Silver Chloride reference
Solid Titanium electrode
Pt1000 temperature sensor
:
:
:
:
:
Glass, PEEK
G-glass or L-glass
Porous PTFE
Solid Titanium
FKM (Viton) and EPDM
2.3 Functional specifications (at 25°C)
Measuring system
Isothermal point
: pH 7
Reference system
: Ag/AgCl with saturated KCl
Glass impedance - G-glass : 400 MΩ nominal
- L-glass : 775 MΩ nominal
Liquid outlet
: Non-flow junction
Junction resistance
: < 10 kΩ
Temperature element
: Pt1000 to IEC 751
Asymmetry potential(zero) : 8 ± 15 mV
Slope
: > 96 % (of theoretical value)
Note: T
he SC25F temperature sensor is designed for cell compensation and for indication.
It is NOT designed for process temperature control.
2.4 Dynamic specifications
Startup time sensor
: < 60 sec.
Response time pH
: t90 < 15 sec. (for 7 to 4 pH step at 25 ºC)
Response time temperature : t90 < 1.5 min. (for 10 °C step)
Stabilization time pH
: < 2 min. (for 0.02 pH unit during 10 sec.)
2.5 Operating range
pH*
Temperature** - G-glass
- L-glass
Pressure (static) ***
: 0 to 14
: -10 °C to 80 °C (14 °F to 176 °F)
: +15 °C to 125 °C (59 °F to 257 °F)
:
p(bar) 10
5
0
-10
Conductivity
0
25
50
100
130
Temp. (ºC)
: > 10 µS/cm
Note* : T
he pH operating range is 0-14 pH, but using the sensor at temperature- and / or
pH-extremes will seriously shorten the lifetime.
Note** : The operating temperature for sensor in combination with PR10 retractable fitting
is limited to 80 ºC
Note*** : Process pressure fluctuations will shorten the lifetime of the sensor
IM 12B6J1-41E-E
2.6 Transmission signal (Data + and Data -)
General
: Bi-directional digital communication (RS 485) with limited
MODBUS support
Data rate
: 9600 b/s (8,E,1)
Output function
: pH or temperature compensated pH
Temperature
Junction resistance
Sensor details (Model, Serial Number, production date)
Sensor calibration data (zero, slope, temperature offset)
Sensor status signals (e.g. Glass impedance detection)
Note: T
he output functions and settings of the sensor are accessible using a dedicated
device such as the Yokogawa FLXA analyzer.
2.7 Power supply (Supply+ versus Supply Gnd)
Operating range
: +2.7 to +3.6 VDC
Power consumption
: ≤ 20 mW
Pin #
1
2
3
4
5
Signal description
Data Data +
Supply +
Shield
Supply Gnd
9
2
1
3
5
4
Fig 1: S
ensor connector (front view)
with gold plated contacts
2.8 Regulatory standards
CE
: Decision 768/2008/EC
- ATEX
: Directive 94/9/EC, as amended by Regulation (EC) no. 1882/2003
- Certificate no.
: DEKRA 11ATEX0064 X for
II 1 G Ex ia IIC T3...T6 Ga
- Electrical data
: For sensor input circuits (by connector) connected to a certified
intrinsically safe circuit with the following maximum values
: Ui = 6.1 V; Ii = 230 mA; Pi = 1.2 W; Li = 4 µH; Ci = 30 µF
::or Certified intrinsically safe Yokogawa transmitter Model FLXA21.
- Special conditions (X) : T6 for Tamb. -40 °C to +60 °C
T5 for Tamb. -40 °C to +75 °C
T4 for Tamb. -40 °C to +110 °C
T3 for Tamb. -40 °C to +125 °C
Electrostatic charges on the sensor enclosure shall be avoided.
- Pressure
: Directive 97/23/EC, as amended by Regulation (EC) no. 1882/2003
- Applying article
: 3.3 (Sound Engineering Practice)
Damaging the screw thread of the sensor might influence the
maximum process pressure.
- EMC
: Directive 2004/108/EC
IEC 61326-1: 2005 Class A (control and laboratory use)
IEC 61326-1: 2005 (use in industrial locations)
- Low Voltage
: Directive 2006/95/EC
Sensor contains glass parts which if broken can cause cutting injuries.
- WEEE
- RoHS
IECEx
Applying standards
Certificate no.
: Directive 2012/19/EU
: Directive 2011/65/EU
: IEC 60079-0: 2007; IEC 60079-11: 2006; IEC 60079-26: 2006
: IECEx DEK 11.0065X for Ex ia IIC T3...T6 Ga
IM 12B6J1-41E-E
10
CSA
Certificate no.
Master contract no.
: 2516979
: 182892
IS, Class I Div. 1, GP A, B, C, D T3…T6
Electrical data
: For sensor input circuits (by connector), connected to a
certified intrinsically safe circuit, with the following maximum
values:
Ui = 6.1 V; Ii = 230 mA; Pi = 1.2 W; Li = 4 μH; Ci = 30 μF
or
Certified intrinsically safe Yokogawa transmitter Model FLXA21
series.
Ambient temperature
: T6 for Tamb. -40 °C to +60 °C
T5 for Tamb. -40 °C to +75 °C
T4 for Tamb. -40 °C to +110 °C
T3 for Tamb. -40 °C to +125 °C
Note: Intrinsically safe when connected as per Control Drawing FF1-K1224QV (see Fig 2)
Control Drawing CSA
Transmitter
+ - G
The SC25F SENCOM® sensor shall be
installed to a certified intrinsically safe circuit
meeting the entity parameters of the sensor
as shown in the table as maximum values,
or to a certified intrinsically safe Yokogawa
transmitter Model FLXA21 series.
81 82 83 84 85 86 87
When installing this equipment, follow the
manufacturer’s control drawing. Installation
should be in accordance with Canadian
Electrical Code, Part 1 or CEC, Part 1.
WU11 cable
terminals 82-84,
86-87.
Maximum cable
length: 100 m.
Cable diameter:
5.8mm
To prevent ignition of
flammable or or combustible
atmospheres, disconnect
power before servicing or
read, understand and adhere
to the manufacturer’s live
maintenance procedures.
Hazardous
location
Maximum values
Sensor
6.1 V
Ui
230
mA
Ii
1.2 W
Pi
4 µH
Li
30 µF
Ci
IS, Class I Div.1, GP A, B, C, D T3/T4/T5/T6
Ta 125 ºC/110 ºC/75 ºC/60 ºC
SC25F -
-
120
225
AGP25
ALP25
120mm
225 mm
General purpose
High temp.
chemical resistant
Fig 2: FF1-K1224QV Control drawing CSA
IM 12B6J1-41E-E
11
FM
Certificate no.
:3
046277
IS, CL I Div. 1, GP A, B, C, D T3…T6
Electrical data
: For sensor input circuits (by connector), connected to a
FM approved intrinsically safe apparatus meeting the entity
parameters of the SENCOM® sensor:
Ui = 6.1 V; Ii = 230 mA; Pi = 1.2 W; Li = 4 μH; Ci = 30 μF
or
FM approved intrinsically safe Yokogawa transmitter Model
FLXA21 series.
Ambient temperature:
T6 for Tamb. -40 °C to +60 °C
T5 for Tamb. -40 °C to +75 °C
T4 for Tamb. -40 °C to +85 °C
T3 for Tamb. -40 °C to +85 °C
Note: Intrinsically safe when connected as per Control Drawing FF1-K1224QT (see Fig 3)
Control Drawing FM
The SC25F SENCOM® sensor shall be
installed to a FM approved intrinsically safe
apparatus meeting the entity parameters
of the sensor as shown in the table as
maximum values, or to a FM certified
intrinsically safe Yokogawa transmitter
Model FLXA21 series.
Transmitter
+ - G
81 82 83 84 85 86 87
WU11 cable
terminals 82-84,
86-87.
When installing this equipment, follow the
manufacturer’s control drawing. Installation
should be in accordance with ANSI/ISA
RP 12.06.01 “Installation of Intrinsically
Safe Systems for Hazardous (Classified)
Locations” and the National Electrical Code
(ANSI/NFPA 70).
Maximum cable
length: 100 m.
Cable diameter:
5.8mm
Classified
location
To prevent ignition of
flammable or or combustible
atmospheres, disconnect
power before servicing or
read, understand and adhere
to the manufacturer’s live
maintenance procedures.
Input parameter
Sensor
6.1 V
Ui
230 mA
Ii
1.2 W
Pi
4 µH
Li
30 µF
Ci
IS, CL I Div.1, GP A, B, C, D T3/T4/T5/T6
Ta 85 ºC/85 ºC/75 ºC/60 ºC
SC25F -
-
120
225
AGP25
ALP25
120mm
225 mm
General purpose
High temp.
chemical resistant
Fig 3: FF1-K1224QT Control drawing FM
IM 12B6J1-41E-E
12
Note: When the sensor has been connected to not intrinsically safe equipment which
exceeds the restrictions regarding the sensor input circuit (see electrical data), the
sensor is not suitable anymore for intrinsically safe use.
2.9 Shipping details
Package size (L x W x H) : 1
20mm version: 300 x 100 x 75 mm (11.8 x 3.9 x 3.0 inch)
225 mm version: 435 x 60 x 60 mm (17.1 x 2.4 x 2.4 inch)
Package weight
: app. 0.25 kg (0.55 lbs)
2.10 Environment and
Storage temperature
Sensor connection
Water proof
IM 12B6J1-41E-E
operational conditions
: -10 ºC to 50 °C (14 ºF to 122 °F)
: Hot swapping possible
: IP67 (conform IEC 60529)
3 INSTALLATION OF SC25F
For optimum measurement results, the
SC25F should be installed in a location
that offers an acceptable representation of
the process composition and DOES NOT
exceed the specifications of the sensor.
The SC25F is designed with PG13.5
threaded connection to allow installation in
a wide variety of applications.
3.1 Typical installation
The SC25F sensor is designed for versatile
in-line, immersion or off-line installation. For
best results the SC25F should be mounted
with the process flow coming towards the
sensor, and positioned at least 15° above
the horizontal plane to eliminate air bubbles
in the pH glass bulb (see Figure 4).
GOOD
3.3 Mounting the sensor
The simplest mounting is to use the PG13.5
threaded connection of the sensor. The
sensor is standard with a slide ring (Ryton)
and an O-ring (Silicon) for direct mounting
in a fitting provided with PG13.5 thread
(see Figure 5). Other O-ring materials are
available as a spare part (see Section 8 of
this Instruction Manual).
Note: W
hen sensor is installed in a fitting
which is already provided with a
spacer for the sensor, remove the
pre-installed slide ring and O-ring
and follow the installation instructions
of the fitting.
GOOD
Slide ring (Ryton)
Slide ring (Ryton)
O-ring
Slide ring (Ryton)
O-ring
HORIZONTAL
O-ring
15º
15º
Adapter
M25 x 1,5 - PG13.5
K1520JN (PVC)
K1520JP (SS)
K1500DV (PVDF)
INCORRECT
When mounting in
FD20
FF20
FS20
use O-ring 11 x 3
Fig 4: Mounting positions of sensor
44
3.2 Preparing the sensor for use
Remove the sensor from its shipping box
and slide off the
so-called ‘wet pocket’, thePG13.5
PG13.5
tube filled with solution to prevent drying out
of the measuring elements during shipment
Sensor
or storage. During shipment, electrolyte M25
in x 1.5
Holder
Fitting
PG13.5
Plastic FS40
the sensor could be dislocated. To correct
Plastic FF40
3/4”NPT
this, place the
sensor upright for 24 hours.
Before installing the sensor in the process it
Adapter PG13.5
should be calibrated.
A general calibration
M25 x 1,5
Adapter
K1500DV (PVDF)
PG13.5 to 3/4”NPT
procedure is described
in Section 6 of this
K1520JM (PVC)
K1523JB (PPO)
K1520JP (SS)
Instruction Manual. K1523JD (SS)
Fig 5: Simple mounting of sensor in
PR10 retractable fitting
60
ng
13
IM 12B6J1-41E-E
14
Slide ring (Ryton)
O-ring
Examples of mounting the SC25F sensor
using an adapter are given in Figures 6, 7,
8 and 9.
PG13.5
Adapter
PG13.5 to SC-fitting
K1523JA (PPO)
K1523JC (SS)
FF40-S22
FS40-S22
Adapter
PG13.5 to SC-fitting
K1523JA (PPO)
K1523JC (SS)
Fitting
Plastic FS40
Plastic FF40
3/4”NPT
Adapter
PG13.5 to 3/4”
K1523JB (PPO
K1523JD (SS)
Slide ring (Ryton)
O-ring
Slide ring (Ryton)
O-ring
Adapter
M25 x 1,5 - PG13.5
K1520JN (PVC)
K1520JP (SS)
K1500DV (PVDF)
PG13.5
When mounting in
FD20
FF20
FS20
use O-ring 11 x 3
10
ø 10.7 -0.7
The SC25F sensor can also be mountedSlide
in ring (Ryton)
O-ring
other fittings using a quick-removal adapter.
These adapters are available as a spare
part and ordering information of these parts
is given in Section 8 of this Instruction
Manual. For a detailed description of these
adapters see Section 4.
ø 13.5
O-ring 29.74 x 3.53
PG13.5
PG13.5
Fig 6: M
ounting of sensor in FD20/
FF20/FS20 fitting
using M25x1.5 adapter
M25 x 1.5
K1500DV/ K1520JN / K1520JP
44
ø 12
223 ±2.0 / 328 ±2.0
ng (Ryton)
O-ring
60
PG13.5
Note: F
irst install the sensor in the adapter
before it is mounted in the fitting.
120 / 225 ±2.0
Wrench 19
Note:
ounting the sensor in fittings where
M
<21
the sealing is situated nearby the
sensortip, uncorrect placement of the
sensor will damage the measuring
glass elements. Please handle with
care.
<25
nnector
3/4”NPT
IM 12B6J1-41E-E
Adapter
PG13.5 to 3/4”NPT
Adapter PG13.5
M25 x 1,5
K1500DV (PVDF)
Fig 7: M
ounting of sensor in plastic
FS40 / FF40 fitting, using adapter
Sensor
K1523JA
Holder / K1523JC
PG13.5
Adapter PG13.5 to SC-fi
K1523JA (PPO)
K1523JC (SS)
15
<21
or
223 ±2.0 / 328 ±2.0
M9-Connector
ch 19
G13.5
ø 12
Slide ring (Ryton)
O-ring
Slide ring (Ryton)
O-ring
Slide ring (Ryton)
O-ring
Adapter
PG13.5 to 3/4”NPT
K1523JB (PPO)
K1523JD (SS)
Seal, e.g. with
Teflon tape
ø 12
3/4”NPT
<25
ø 10.7 -0.7
1/4”NPT
PG13.5
FF40-S22
FS40-S22
Adapter
PG13.5 to SC-fitting
K1523JA (PPO)
K1523JC (SS)
Fitting
Plastic FS40
Plastic FF40
Flow fitting SS
K1598AC
60
Adapter
PG13.5 to SC-fitting
K1523JA (PPO)
K1523JC (SS)
3/4”NPT
Adapter
PG13.5 to 3/4”NPT
K1523JB (PPO)
K1523JD (SS)
1/4”NPT
PG13.5
10
7 -0.7
PG13.5
Slide ring (Ryton)
O-ring
120 / 225 ±2.0
yton)
O-ring
Wrench 19
ø 13.5
O-ring 29.74 x 3.53
Fig 8: M
ounting of sensor in metal FF40
fitting, using adapter K1523JA /
K1523JC
Adapter PG13.5 to SC-fitting
K1523JA (PPO)
K1523JC (SS)
Fig 9: M
ounting of sensor in fitting
K1598AC, using adapter
K1523JB / K1523JD
IM 12B6J1-41E-E
4 DIMENSIONS
Dimensions in mm
M25 x 1.5
<21
M9-Connector
Fig 11: D
imensions adapters
K1500DV, K1520JN, K1520JP
Wrench 19
PG13.5
Slide ring (Ryton)
O-ring
120 / 225 ±2.0
h
Slide ring (Ryton)
O-ring
Fig 12: D
imensions adapters
K1523JA, K1523JC
PG 13,5
60
ø 10.7 -0.7
Ø13.5
<25
ø 12
10
PG13.5
/4”NPT
PO)
S)
SS
44
PG 13,5
223 ±2.0 / 328 ±2.0
yton)
16
3/4"NPT
Fig 10: Dimensions SC25F Sensor
IM 12B6J1-414E-E
Adapter
PG13.5 to SC-fitting
K1523JA
Fig 13: (PPO)
Dimensions adapters
K1523JC (SS)
K1523JB, K1523JD
FF40-S22
FS40-S22
Adapte
PG13.5
K1523J
K1523J
17
5. WIRING
The SC25F is provided with a multipole M9 male connector for connection to the
Yokogawa FLXA analyzer using the WU11 interconnection cable for SENCOM® sensors.
The connections of this M9 male connector (see Section 2.7 for details), the WU11
interconnection cable and the FLXA terminal strip are given in Table 3.
Table 3: Definition M9 sensor connector pin to WU11 cable and FLXA analyzer
M9 Pin #
1
2
3
4
5
WU11 wire #
83
84
87
82
86
WU11 wire color FLXA terminal # Signal description
Yellow
83
Data Green
84
Data +
Brown
87
Supply +
Black
82
Shield
White
86
Supply Gnd
6. GENERAL CALIBRATION & MAINTENANCE PROCEDURE
Calibration of the SC25F pH SENCOM® sensor can be done on site with the FLXA analyzer
connected, or in the laboratory with another FLXA analyzer or with the dedicated Yokogawa
SENCOM® PC software, model SPS24. When using another FLXA analyzer, it has to be set
correctly for each calibration. Refer to the FLXA analyzer Instruction Manual for details. After
calibration all data will be stored in the sensor itself.
If the sensor is reconnected to the FLXA analyzer in the field, the calibration data of the
sensor is automatically read by the analyzer.
6.1 Calibration for pH measurement
To calibrate the SC25F pH SENCOM® sensor, two buffer solutions with known pH values
are required. It is recommended that one buffer solution has a value near to pH 7.00.
Depending on the process value to be measured, the second buffer solution should be
either acidic (below pH 7.00) or alkaline (above pH 7.00). Normally the IEC buffers (pH 4.01,
6.87 and 9.18) are used.
The following is a very general 2-point calibration procedure:
1. Clean the sensor using a 5% solution of HCl;
2. Rinse sensor thoroughly with demineralized water;
3. Immerse the sensor in the first buffer (pH 6.87 is recommended) and execute calibration
as described in the instruction manual of the analyzer or SPS24 PC software;
4. Rinse sensor thoroughly with demineralized water;
5. Immerse the sensor in the second buffer (pH 4.01 or 9.18 is recommended) and execute
calibration as described in the instruction manual of the analyzer or SPS24 PC software;
6. Rinse sensor thoroughly with demineralized water.
During calibration, the temperature compensation should be active. The FLXA analyzer
automatically compensates for the sensitivity change of the pH sensor at different
temperatures.
After calibration, replace or re-install the sensor into the process.
IM 12B6J1-41E-E
18
6.2 Maintenance of the SC25F sensor
A pH sensor requires routine maintenance to keep the measuring elements clean and
functioning. Depending on the process, different cleaning solutions may be required.
void cleaning the complete sensor with solution. Some cleaning solutions will
A
damage the modelcode sticker and connector which are placed on the electronic
housing on top of the sensor. Only clean the measuring elements at the bottom
side of the sensor.
In most cases cleaning with water, iso-propanol or methanol is sufficient. In other cases the
measuring elements of the sensor have to be cleaned with specific solutions.
Examples:
1. Deposits of limes, hydroxides or carbonates can be removed by immersing the bottom
part of the sensor in a solution containing dilute hydrochloric acid (5% is recommended).
Afterwards rinse the sensor with water.
2. Deposits of oil and fat can be removed with hot water with a detergent. When the results
are unsatisfactory, a mild (carbonate based) abrasive can be used.
3. Protein deposits should be removed with a protein enzymatic solution, for instance a
solution containing 8.5 mL concentrated hydrochloric acid and 10 grams of pepsin in
1 liter of water.
Note: A
void cleaning with non-polar solvent like tri-chloro ethylene, toluene or hexane. The
non-polar solvents will break up the gel-layer on the pH glass bulb and requires that
the sensor has to be soaked in water for at least 12 hours before it will function again.
The Teflon diaphragm of the sensor can be regenerated by putting it in hot (± 70°C, 158°F)
3 molar Potassium Chloride (KCl) solution and letting it cool down to room temperature. This
procedure clears the diaphragm and will soak the diaphragm with conductive KCl again.
IM 12B6J1-41E-E
19
7. MODEL CODE
Model Code Suffix Code Option
SC25F
sensor type - AGP25
- ALP25
sensor length
-120
-225
Description
SENCOM® pH Sensor: pH, REF, LE, Temp.
General purpose model
High temp. chemical resistant model
120mm
225mm
8. SPARE PARTS
K1500BV
K1500BZ
K1500GR
K1524AA
O-rings
O-ring set (6 pcs.), 11x3 mm, EPDM
O-ring set (6 pcs.), 11x3 mm, Viton
O-ring set (8 pcs.), 11x3 mm, Silicon
O-ring 11x3 mm (Silicon) and Slide ring (Ryton)
Connection equipment
BA10
Junction box for SENCOM® Sensor
WU11-M9-xx-WP-V Interconnection Cable for SENCOM® Sensor,
available lengths xx (03, 05, 10, 20 meter)
WU11-M9-30-CN-V Extension Cable for SENCOM® Sensor, length 30 meter
K1520BA
K1520BB
K1520BC
K1520BD
K1520BE
Buffer solutions
Buffer solutions pH 4.01, pH 6.87, pH 9.18 (500 ml each)
Buffer solution pH 1.68 (500 ml)
Buffer solution pH 4.01 (500 ml))
Buffer solution pH 6.87 (500 ml)
Buffer solution pH 9.18 (500 ml)
K1500DV
K1520JN
K1520JP
K1523JA
K1523JB
K1523JC
K1523JD
Adapters
Adapter, PG13.5
Adapter, PG13.5
Adapter, PG13.5
Adapter, PG13.5
Adapter, PG13.5
Adapter, PG13.5
Adapter, PG13.5
K1598AC1)
Fittings
Flow fitting (incl. 3.1 certificate), Stainless Steel
to
to
to
to
to
to
to
M25x1.5, PVDF
M25x1.5, PVC
M25x1.5, Stainless Steel
FF40/FS40 fitting, PPO (Noryl)
¾”NPT, PPO (Noryl)
FF40/FS40 fitting, Stainless Steel
¾”NPT, Stainless Steel
1)
Note : Adapter K1523JB or K1523JD needed to fit the sensor.
IM 12B6J1-41E-E
20
9. EU DECLARATION OF CONFORMITY
YOKOGAWA
EU DECLARATION OF CONFORMITY
Yokogawa Process Analyzers Europe B.V.
Euroweg 2
3825 HD Amersfoort
The Netherlands
We:
herewith declare under our sole responsibility that the product, model: SC25F
further specified with model suffix- and option codes: As listed in Annex-1 in this document
is manufactured in accordance with the requirements for CE-marking of products as stated in EC Decision:
768/2008/EC on a common framework for the marketing of products
by applying the following standards:
EN-ISO 9001: 2008
Quality management systems - Requirements
Subject product is:
In compliance with the essential requirements of the specific product legislation:
- EMC
Directive 2004/108/EC
by applying the following standards:
IEC 61326-1: 2006 Class A
Electrical equipment for measurement, control and laboratory use –
EMC requirements – Part 1: General requirements.
IEC 61326-2-3: 2006
Electrical equipment for measurement, control and laboratory use –
EMC requirements – Part 2-3: Particular requirements –
Test configurations, operational conditions and performance criteria
for transducers with integrated or remote signal conditioning.
•
- LVD
Directive 2006/95/EC
by applying the following standards:
IEC 61010-1: 2010
Safety requirements for electrical equipment for measurement,
control and laboratory use – Part 1: General requirements.
- Pressure Equipment
Directive 97/23/EC (PED)
As amended by Regulation (EC) no. 1882/2003, by applying:
Article 3.3:
Sound Engineering Practice
- RoHS
by applying:
Category 9:
Directive 2011/65/EU
Industrial monitoring and control instruments, ion selective electrode
- Explosive atmospheres
Directive 94/9/EC (ATEX)
As amended by Regulation (EC) no. 1882/2003, by applying the following standards:
EN 60079-0: 2009
Explosive atmospheres –
Part 0: Equipment – General requirements
EN 60079-11: 2007
Explosive atmospheres –
Part 11: Equipment protection by intrinsic safety “i”
EN 60079-26: 2007
Explosive atmospheres –
Part 26: Equipment with equipment protection level (EPL) Ga
The provisions fulfilled are:
•
• II 1 G Ex ia IIC T3...T6 Ga
Number of the EC-type Examination Certificate: DEKRA 11 ATEX 0064 X
Name of the notified body: DEKRA Certification B.V.
Identification number of the notified body: 0344
Address of the notified body: Meander 1051, 6825 MJ Arnhem, The Netherlands
Produced according to appropriate quality control procedures.
The CE-mark has been affixed on the product in 2013 for the first time.
If applicable, the product is checked against the latest official released revision of the standards mentioned above;
differences do not affect the certified product identified on this declaration.
Amersfoort, 01 July 2014
H. Leijten
General Manager
Yokogawa Process Analyzers Europe B.V.
1/2
IM 12B6J1-41E-E
21
Annex-1
Model Code Suffix Code Option
SC25F
sensor type - AGP25
- ALP25
sensor length
-120
-225
Description
SENCOM® pH Sensor: pH, REF, LE, Temp.
General purpose model
High temp. chemical resistant model
120mm
225mm
IM 12B6J1-41E-E
22
10. CHEMICAL COMPATIBILITY CHART
Chemical Compatibility Chart
Material
Inorganic acid
Hydrochloric acid
Nitric acid
-
-
O
O
O
O
O
O
O
O
O
-
-
-
O
O
O
O
O
O
O
O
O
O
Organic acid
Alkali
Acid salt
Basic salt
Neutral salt
Oxidizing
agent
20
95
O
O
O
X
-
-
-
-
-
O
O
O
-
-
-
O
O
fuming
O
O
O
-
-
-
-
-
-
O
O
O
-
-
-
O
O
O
10
O
O
O
O
O
O
-
-
-
O
O
O
O
O
X
O
O
O
sat.
O
O
O
X
X
X
-
-
-
O
O
O
O
O
X
O
O
O
25
O
O
X
O
X
-
O
O
O
O
O
O
O
O
O
O
O
O
50
-
-
-
-
-
-
O
O
O
O
O
O
X
X
X
O
O
O
95
-
-
-
-
-
-
O
O
O
O
O
O
-
-
-
O
O
O
O
O
O
-
-
-
O
O
O
X
X
-
O
O
O
O
O
O
O
O
O
-
-
-
-
-
-
25
O
O
O
O
O
O
50
O
O
O
O
O
O
X
-
-
O
O
O
O
O
O
O
O
O
95
X
X
-
O
O
O
X
-
-
O
O
O
O
O
O
O
O
O
40
O
O
O
-
-
-
-
-
-
O
O
O
-
-
-
X
X
X
75
O
O
X
-
-
-
-
-
-
O
O
O
-
-
-
-
-
-
10
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
glacial
-
-
-
X
X
X
O
O
O
O
O
O
O
O
X
O
O
O
80
-
-
-
O
O
X
X
X
-
O
O
O
X
X
X
O
O
O
Citric acid
50
O
O
O
O
O
O
X
X
X
O
O
O
O
O
O
O
O
O
Calcium hydroxide
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Potassium hydroxide
50
O
O
O
O
X
-
O
X
-
O
O
O
O
O
O
O
O
X
Sodium hydroxide
40
X
X
X
O
X
-
X
X
-
O
O
O
O
O
O
O
O
X
Hydrofluoric acid
Organic
solvent
100
-
-
60
100
O
X
20
60
O
O
fuming
Phosphoric acid
O = can be used; X = shortens useful life; - = cannot be used; Blank = no data available
100
20
O
O
60
100
O
O
20
60
O
O
60
20
O
50
20
100
10
Conc.%
Sulfiric acid
Glass
PEEK
60
Temp. °C
PTFE
(teflon)
Ti
100
EPDM
Viton
Acetic acid
Formic acid
Ammonia in water
30
X
X
X
O
O
O
X
X
-
O
O
O
O
O
O
O
O
X
Ammonium chloride
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Zinc chloride
50
O
O
O
O
O
O
O
O
O
Iron(III) chloride
50
O
O
O
O
Sodium sulfite
sat.
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Sodium carbonate
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Potassium chloride
sat.
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
Sodium sulfate
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Calcium chloride
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Sodium chloride
sat.
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Sodium nitrate
50
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Aluminium chloride
sat.
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
Hydrogen peroxide
30
O
O
O
O
O
X
O
O
O
O
O
O
O
O
O
O
O
O
Sodium Hypochloride
50
O
O
X
O
O
O
X
-
-
O
O
O
O
O
O
O
O
O
Potassium dichromate
sat.
O
O
O
O
O
O
O
O
O
Chlorinated lime
Ethanol
Cyclohexane
80
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
X
X
X
O
O
O
X
-
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
Toluene
-
-
-
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
Trichloroethane
X
X
X
-
-
-
O
O
O
O
O
O
O
O
O
O
O
O
Water
O
O
O
O
O
O
O
O
O
O
O
X
O
O
O
O
O
O
Note: Information in this list is based on our general experience and literature data and given in good faith.
However Yokogawa is unable to accept responsibility for claims related to this information.
IM 12B6J1-41E-E
23
IM 12B6J1-41E-E
YOKOGAWA ELECTRIC CORPORATION
World Headquarters
9-32, Nakacho 2-chome, Musashino-shi
Tokyo 180-8750
Japan
www.yokogawa.com
YOKOGAWA ELECTRIC ASIA Pte. LTD.
5 Bedok South Road
Singapore 469270
Singapore
www.yokogawa.com/sg
YOKOGAWA CORPORATION OF AMERICA
2 Dart Road
Newnan GA 30265
USA
www.yokogawa.com/us
YOKOGAWA CHINA CO. LTD.
3F Tower D Cartelo Crocodile Building
No.568 West Tianshan Road Changing District
Shanghai, China
www.yokogawa.com/cn
YOKOGAWA EUROPE BV
Euroweg 2
3825 HD AMERSFOORT
The Netherlands
www.yokogawa.com/eu
YOKOGAWA MIDDLE EAST B.S.C.(c)
P.O. Box 10070, Manama
Building 577, Road 2516, Busaiteen 225
Muharraq, Bahrain
www.yokogawa.com/bh
IM 12X0X0-E-E
Subject to change without notice
Copyright ©
IM 12B6J1-41E-E
Subject to change without notice
Copyright ©
Yokogawa has an extensive sales and
distribution network.
Please refer to the European website
(www.yokogawa.com/eu) to contact your
nearest representative.
Printed in The Netherlands, 00-000 (A) I
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