Endress + Hauser Operating Instructions Turbimax CUE21 / CUE22 Turbidimeter for online measurement

Products Solutions Operating Instructions Turbimax CUE21 / CUE22 Turbidimeter for online measurement MODE EXIT OUT BA00395C/07/EN/13.15 71292787 OUT Turbimax CUE21 IN E Services Table of contents Turbimax CUE21 / CUE22 Table of contents 1 Document information . . . . . . . . . . . . . . 3 1.1 1.2 Safety information . . . . . . . . . . . . . . . . . . . . . . 3 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Basic safety instructions . . . . . . . . . . . . 4 2.1 2.2 2.3 2.4 2.5 Requirements for personnel . . . . . . . . . . . . . . . Designated use . . . . . . . . . . . . . . . . . . . . . . . . Workplace safety . . . . . . . . . . . . . . . . . . . . . . . Operational safety . . . . . . . . . . . . . . . . . . . . . . Product safety . . . . . . . . . . . . . . . . . . . . . . . . . 3 Incoming acceptance and product identification . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 3.2 3.3 3.4 Incoming acceptance . . . . . . . . . . . . . . . . . . . . Product identification . . . . . . . . . . . . . . . . . . . . Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . Certificates and approvals . . . . . . . . . . . . . . . . 4 Installation . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 4.2 4.3 Installation requirements . . . . . . . . . . . . . . . . . 8 Mounting the measuring device . . . . . . . . . . . . 9 Post-installation check . . . . . . . . . . . . . . . . . . 12 5 Electrical connection . . . . . . . . . . . . . . 13 5.1 5.2 5.3 5.4 5.5 5.6 Connection requirements . . . . . . . . . . . . . . . . Connecting RS-485 cables . . . . . . . . . . . . . . . Connecting relays . . . . . . . . . . . . . . . . . . . . . Connecting the current output . . . . . . . . . . . . Ensuring the degree of protection . . . . . . . . . . Post-connection check . . . . . . . . . . . . . . . . . . 6 Operation options . . . . . . . . . . . . . . . . . 16 6.1 6.2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Operating concept . . . . . . . . . . . . . . . . . . . . . 16 7 Commissioning . . . . . . . . . . . . . . . . . . . . 18 7.1 7.2 Function check . . . . . . . . . . . . . . . . . . . . . . . 18 Switching on the measuring device . . . . . . . . . 18 8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1 8.2 Configuring the measuring device . . . . . . . . . . 19 Instrument calibration . . . . . . . . . . . . . . . . . . 23 9 Diagnostics and troubleshooting . . . 27 9.1 9.2 General troubleshooting . . . . . . . . . . . . . . . . . 27 Diagnostic information on local display . . . . . . 27 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . 29 10.1 Cleaning the flow-through cuvette . . . . . . . . . 29 2 4 4 4 5 5 6 6 7 7 10.2 10.3 Replacing the flow-through cuvette . . . . . . . . 29 Replacing the desiccant pouch . . . . . . . . . . . . 30 11 Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 11.1 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Replacing the electronics module . . . . . . . . . . 11.3 Replacing the lamp . . . . . . . . . . . . . . . . . . . . 11.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 31 31 31 32 32 Accessories . . . . . . . . . . . . . . . . . . . . . . . 33 12.1 Calibration solutions . . . . . . . . . . . . . . . . . . . 33 12.2 Flow chamber . . . . . . . . . . . . . . . . . . . . . . . . 33 12.3 Passive barrier . . . . . . . . . . . . . . . . . . . . . . . . 33 13 Technical data . . . . . . . . . . . . . . . . . . . . 34 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 13 14 14 14 14 14 Endress+Hauser Turbimax CUE21 / CUE22 Document information 1 Document information 1.1 Safety information Structure of information LDANGER Causes (/consequences) Consequences of non-compliance (if applicable) ‣ Corrective action LWARNING Causes (/consequences) Consequences of non-compliance (if applicable) ‣ Corrective action LCAUTION Causes (/consequences) Consequences of non-compliance (if applicable) ‣ Corrective action NOTICE Cause/situation Consequences of non-compliance (if applicable) ‣ Action/note 1.2 Symbol Meaning This symbol alerts you to a dangerous situation. Failure to avoid the dangerous situation will result in a fatal or serious injury. This symbol alerts you to a dangerous situation. Failure to avoid the dangerous situation can result in a fatal or serious injury. This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in minor or more serious injuries. This symbol alerts you to situations which may result in damage to property. Symbols Meaning Additional information, tips Permitted or recommended Not permitted or not recommended Reference to device documentation Reference to page Reference to graphic  Endress+Hauser Result of a step 3 Basic safety instructions Turbimax CUE21 / CUE22 2 Basic safety instructions 2.1 Requirements for personnel • Installation, commissioning, operation and maintenance of the measuring system may be carried out only by specially trained technical personnel. • The technical personnel must be authorized by the plant operator to carry out the specified activities. • The electrical connection may be performed only by an electrical technician. • The technical personnel must have read and understood these Operating Instructions and must follow the instructions contained therein. • Measuring point faults may be repaired only by authorized and specially trained personnel. Repairs not described in the Operating Instructions provided may only be carried out directly by the manufacturer or by the service organization. 2.2 Designated use The turbidimeters from the Turbimax CUE21 / CUE22 series are designed for online measurement of turbidity in process water and drinking water. The infrared device CUE21 meets the design criteria for turbidity measurement specified by ISO 7027 and DIN 27027. The white light device CUE22 meets the design criteria specified by US EPA 180.1. Use of the device for any purpose other than that described, poses a threat to the safety of people and of the entire measuring system and is therefore not permitted. The manufacturer is not liable for damage caused by improper or non-designated use. 2.3 Workplace safety As the user, you are responsible for complying with the following safety conditions: • Installation guidelines • Local standards and regulations Electromagnetic compatibility • The product has been tested for electromagnetic compatibility in accordance with the applicable European standards for industrial applications. • The electromagnetic compatibility indicated applies only to a product that has been connected in accordance with these Operating Instructions. 4 Endress+Hauser Turbimax CUE21 / CUE22 Basic safety instructions 2.4 Operational safety 1. Before commissioning the entire measuring point, verify that all connections are correct. Ensure that electrical cables and hose connections are undamaged. 2. Do not operate damaged products, and safeguard them to ensure that they are not operated inadvertently. Label the damaged product as defective. 3. If faults cannot be rectified: Take the products out of operation and safeguard them to ensure that they are not operated inadvertently. 2.5 Product safety The product is designed to meet state-of-the-art safety requirements, has been tested, and left the factory in a condition in which it is safe to operate. The relevant regulations and European standards have been observed. Endress+Hauser 5 Incoming acceptance and product identification Turbimax CUE21 / CUE22 3 Incoming acceptance and product identification 3.1 Incoming acceptance 1. Verify that the packaging is undamaged.  Notify your supplier of any damage to the packaging. Keep the damaged packaging until the matter has been settled. 2. Verify that the contents are undamaged.  Notify your supplier of any damage to the delivery contents. Keep the damaged products until the matter has been settled. 3. Check the delivery for completeness.  Check it against the delivery papers and your order. 4. Pack the product for storage and transportation in such a way that it is protected against impact and moisture.  The original packaging offers the best protection. The permitted ambient conditions must be observed (see "Technical data"). If you have any questions, please contact your supplier or your local sales center. 3.2 Product identification 3.2.1 Nameplate The nameplate provides you with the following information on your device: • Manufacturer identification • Order code • Extended order code • Serial number • Ambient and process conditions • Safety information and warnings Compare the data on the nameplate with your order. 3.2.2 Product identification Product page www.endress.com/cue21 www.endress.com/cue22 Interpreting the order code The order code and serial number of your product can be found in the following locations: • On the nameplate • In the delivery papers Obtaining information on the product 6 1. Go to the product page for your product on the Internet. 2. In the navigation area on the right-hand side, select "Check your device features" under "Device support".  An additional window opens. Endress+Hauser Turbimax CUE21 / CUE22 Incoming acceptance and product identification 3. Enter the order code from the nameplate into the search field.  You will receive information on each feature (selected option) of the order code. 3.3 Scope of delivery The scope of delivery comprises: • 1 turbidimeter Turbimax CUE21 or CUE22 • 1 field terminal box • 1 packet of desiccant • 1 tubing kit including – 1 shutoff clamp – 1 flow controller – 2 connecting tubes with fittings for flow-through assembly – 1 vent screw for drain tube (used in pressurized systems) • 1 Operating Instructions BA00395C If you have any questions, please contact your supplier or your local sales center. 3.4 Certificates and approvals The product meets the requirements of the harmonized European standards. As such, it complies with the legal specifications of the EC directives. The manufacturer confirms successful testing of the product by affixing to it the  mark. Endress+Hauser 7 Installation Turbimax CUE21 / CUE22 4 Installation 4.1 Installation requirements 4.1.1 Measuring system A complete measuring system comprises: • Turbimax turbidimeter with installed cuvette and desiccant pouch • Connecting tube with – fittings for flow-through assembly – Shutoff clamp – Flow controller – Vent screw for drain tube (in pressurized systems) • Sensor interconnect cable 3 4 1 5 MODE EXIT E 6 Turbimax CUE21 2 7 8 A0025595 1 1 Shutoff clamp 2 Connection for intake tube 3 4 1) 8 Turbimax CUE21 (example) 5 Sensor interconnect cable 6 Vent for drain tube Flow assembly 7 Connection for drain tube Flow controller 8 Terminal box 1) 1) OD 8 mm (0.31 inch), ID 4.75 mm (3/16 inch) Endress+Hauser Turbimax CUE21 / CUE22 Installation Mounting dimensions 131.6 (5.16) 200 (8) 4.1.2 M6 (¼) E 50.8 (2.0) 90.2 (35) OUT OUT IN 347.2 (13.7) 207.7 (8.18) M4 (3/16) 87.3 (3.44) 61.8 (2.43) 30.2 (1.19) 196.8 (7.75) 147.7 (5.81) A0025606 2 Mounting dimensions - front view A0025608 3 Mounting dimensions - lateral view Dimensions in mm (inch) 4.2 Mounting the measuring device 4.2.1 Wall mounting The device is designed for wall mounting. If wall mounting is not practicable, the device can be mounted on any suitable level surface. • Ensure that the temperature does not exceed the maximum permitted operating temperature range (0 to 50 °C (32 to 122 °F)). • Leave approx. 20 cm (8 inch) of free space above the device to ensure that there is sufficient room for calibration and cuvette maintenance.(→  2) • Mount the device as close as possible to the sampling point to ensure fast response times (within 2 to 3 m (6 to 10 ft)). 1. Drill mounting holes for the M4 mounting screws to install the field terminal box. 2. Drill mounting holes for the M6 mounting screws to install the device housing on top of the terminal box. 3. Mount the terminal box. 4. Mount the rest of the device on top of the terminal box. 4.2.2 Installing the desiccant pouch The device is equipped with a continuous vapor purge system. A replaceable desiccant pouch in the lower portion of the instrument dries the air. System heat is used to warm the Endress+Hauser 9 Installation Turbimax CUE21 / CUE22 air. A fan located inside the device ensures that heated air circulates continuously around the optical path and the flow-through cuvette. 1 3 2 1 Securing screws 2 Electronic component 3 Humidity indicator 4 Desiccant pouch 5 Base of housing 4 5 1 A0026679 4 Installing the desiccant pouch 1. Unscrew the four corner screws (item 1). 2. Remove the electronic component of the device (item 2). 3. Open the bag protecting the desiccant pouch (item 4), and place the pouch with the humidity indicator (item 3) in the base of the housing (item 5).  Ensure that you install the desiccant pouch immediately after opening the bag to prevent premature degradation of the desiccant. 4. Return the electronic component of the device to its original position. 5. Tighten the four corner screws. To prevent premature saturation of the desiccant, it is recommended that you keep the measurement chamber covered at all times. 4.2.3 Plumbing the measuring device • The device requires only a very low overpressure in the flow assembly to operate, approx. 0.069 bar (1 psi). • The flow controller is rated for a maximum overpressure of 13.8 bar (200 psi). • The minimum flow rate for the flow-through cuvette is 100 ml/min to 1 l/min (0.026 to 0.26 US gal/min). • The maximum permitted medium temperature is 50 °C (122 °F). 10 Endress+Hauser Turbimax CUE21 / CUE22 Installation A0025699 5 Recommended plumbing 1 Connection for intake tube 7 Connection for drain tube 2 Shutoff clamp 8 Vent for drain tube 3 Connection for intake tube 9 Connection for drain tube 4 Connection for intake tube 10 Use 5 Connection for drain tube 11 Nut 6 Flow controller 12 Tubing (not supplied) The device is equipped for plumbing using tubing with OD 8 mm (0.31 inch), ID 4.75 mm (3/16 inch). If the device is going to be exposed to sunlight, opaque tubing should be used to prevent algae growth. Plumbing the device Endress+Hauser 1. Push the shutoff clamp (item 2) over one of the supplied tubes. 2. Connect the tube to the upper part of the intake tubing connection (item 3) and to the connection on top of the device (item 1). 3. Push the flow controller (item 6) over the second tube supplied. 4. Connect the tube to the upper part of the drain tubing connection (item 7) and to the connection on top of the device (item 5). 5. Connect a tube with an internal diameter of 4.75 mm (3/16 inch) to the lower part of the intake tubing connection (item 4) to supply the sensor with a reliable sample flow. 6. Connect a tube with an internal diameter of 4.75 mm (3/16 inch) to the lower part of the drain tubing connection (item 9) to route the sensor drain to a suitable drain on site.  The vent in the drain tube (item 8) allows for pressure compensation, thus helping to prevent bubble formation in the cuvette. 7. If your CUE21 / CUE22 is integrated in a high-pressure system, insert the 6:32 seal screw provided into the vent hole and tighten it. 11 Installation Turbimax CUE21 / CUE22 4.3 12 Post-installation check 1. After mounting, check all the connections to ensure they are secure and leak-tight. 2. Check all cables and hoses for damage. 3. Check whether the cables are routed such that they are free from electromagnetic interference influences. Endress+Hauser Turbimax CUE21 / CUE22 Electrical connection 5 Electrical connection LWARNING Device is live Incorrect connection may result in injury or death. ‣ The electrical connection may be performed only by an electrical technician. ‣ The electrical technician must have read and understood these Operating Instructions and must follow the instructions contained therein. Prior to commencing connection work, ensure that no voltage is present on any cable. ‣ 5.1 Connection requirements ‣ The device is equipped with a power supply of 100 to 240 V AC, 47 to 63 Hz. Before connecting the device, verify that the line voltage matches these specifications. ‣ Place a circuit breaker upstream from the mains connection to facilitate maintenance work. Q2 R2 D2 D1 R3 1 EMCF1 Q1 R4 R1 RLY2 RLY1 4 TB2 TB1 TB3 1 5 NO NC ALARM COM 2 NO NC 100-240 VAC 90-250 VAC COM ALARM 47-63 Hz + SHLD A B 4-20mA/ RS-485 L1 L6 L2 WHT RED L5 BRN ORG TB4 L3 BLK GRN L7 2 YEL SHLD ISL1 L4 6 7 3 8 A0025701 Endress+Hauser 6 Field terminal box 1 Terminal strip, power supply 5 2 Power cable strain relief 6 Sensor wiring 3 Power cable gland 7 4 to 20 mA / RS485 cable gland 4 Alarm terminal strip, 240 VA, 2 A 8 Alarm cable gland 4 to 20 mA / RS485 terminal strip 13 Electrical connection Turbimax CUE21 / CUE22 5.2 Connecting RS-485 cables The digital RS-485 half-duplex (2-wire) interface operates with differential levels that are not susceptible to electrical interference. That is why cable lengths of up to 914 m (3000 ft) can be used. The last device on each bus may require terminating with a 120-ohm resistor to eliminate signal reflection on the line. ‣ Do not run the RS-485 cables in the same conduit as the power cable. If you are using the device in a process control system without galvanically isolated inputs, you must use a passive barrier e.g. RB223 (see "Accessories") to connect the CUE21/22. 5.3 Connecting relays The relays for alarm 1 and alarm 2 are mechanical relays rated at 240 V AC and 2 A. ‣ Please note that the relays are labeled NO (Normally Open), NC (Normally Closed) and C (Common). The alarm relays are configured to be "fail-safe" i.e. under normal operating conditions, the device is supplied with current and is not in an alarm condition. How these alarm relays function is described in the "Configuring the alarms" section. 5.4 Connecting the current output The 4-20 mA output is supplied by a 15 V DC power source and can operate recording devices with loads of up to 600 Ω. This output is isolated from line power and earth ground. ‣ Do not run the analog current cables in the same conduit as the power cable. How this output works is described in the "Selecting the output" section. 5.5 Ensuring the degree of protection Only the mechanical and electrical connections which are described in these instructions and which are necessary for the required, designated use, may be carried out on the device delivered. ‣ Exercise care when carrying out the work. Otherwise, the individual types of protection (Ingress Protection (IP), electrical safety, EMC interference immunity) agreed for this product can no longer be guaranteed due, for example, to covers being left off or cable (ends) which are loose or insufficiently secured. 5.6 Post-connection check Device condition and specifications Notes Is there any external damage to the device and cables? Visual inspection Electrical connection Notes Are the installed cables strain-relieved and not twisted? Visual inspection Cable run without loops and cross-overs? Is the cable type run completely isolated at the point of installation? Power cables / signal lines Are all the screws terminals properly tightened? 14 Endress+Hauser Turbimax CUE21 / CUE22 Endress+Hauser Electrical connection Electrical connection Notes Are all cable entries mounted, tightened and leak-tight? For lateral cable entries, make sure the cables loop downwards to allow water to drip off Are the PE distributor blocks grounded (if present)? Grounding is carried out at the point of installation. 15 Operation options Turbimax CUE21 / CUE22 6 Operation options 6.1 Overview 6.1.1 Display and operating elements 1 AUTO Å 2 CAL 00000 ..:. CONFIG 3 0000 OFFSET MODE 4 E EXIT 5 6 7 8 A0025727 1 Displays turbidity value and user guidance during configuration 5 Icon indicates use of an access code 2 Indicates operating mode: AUTO (measurement), CAL (calibration), CONFIG (configuration) 6 Indicates OFFSET mode 3 Displays error message and user guidance 7 Confirms a selected option or mode 4 Switches between modes 8 Keys used to change settings 6.1.2 Key functions Switches between the operating modes of the device: CAL, CONFIG and AUTO (measurement) Confirms the highlighted or selected option or mode Scrolls up through the menu. Increases numerical values. Scrolls down through the menu. Decreases numerical values. 6.2 Operating concept 6.2.1 Access code The device is equipped with a security feature. An access code protects it from unintentional or undesired changes to the configuration and to the calibration data. The access code can be enabled in the configuration mode. 16 Endress+Hauser Turbimax CUE21 / CUE22 Operation options A0026267 7 Access protection enabled: Prompt to enter code ‣ If access protection is enabled: Enter the code 333.  You can access the CAL or CONFIG menus. The access code cannot be changed. 6.2.2 Menu structure The device has three operating modes that can be selected using the • AUTO Standard operating mode for displaying current measured values • CAL Calibration mode for performing calibration procedures • CONFIG Setup mode for configuring customer-specific settings key: Configuration menu (CONFIG) The configuration menu is split into several submenus. The following submenus are available: • Output selection • RS-485 port configuration • Alarm configuration • Security access configuration • Offset configuration • Advanced settings The extended settings are grouped together to prevent them from being modified accidentally: – Response speed – Displayed resolution – LCD backlight brightness – Displayed units – Ultrasonic cleaning – RS485 parameters – Desiccant alarm For a detailed explanation of the submenus, see the "Instrument configuration" section. (→  19) Endress+Hauser 17 Commissioning Turbimax CUE21 / CUE22 7 Commissioning 7.1 Function check ‣ Verify that all connections are correct. ‣ In particular, verify that all tubes are firmly attached and are not leaking. ‣ Ensure that the supply voltage is within the permitted range of 100 to 240 V AC! 7.2 Switching on the measuring device Familiarize yourself with the operation of the device prior to switching it on. To do so, read the "Basic safety instructions" and "Operation" sections in particular. 18 1. Switch on the power supply to the device. 2. Wait until the device has warmed up (typically 45 to 60 minutes when commissioning the device for the first time).  When a continuous process stream is flowing through the device, the device will output the turbidity level measured in the sample to the LC display. In addition, the equivalent signal is output on the analog (4-20 mA) or digital output, depending on the options selected. 3. Configure the device according to your needs. Endress+Hauser Turbimax CUE21 / CUE22 Operation 8 Operation 8.1 Configuring the measuring device 8.1.1 Selecting the output Function Options Output (O/P) • 4-20 • 485 • OFF AUTO 4-20 CAL Å CONFIG Info O/P 4-20 4 mA value 0 to 1000 NTU Set the lower turbidity limit value (LOLM) that corresponds to the 4 mA output level. 20 mA value 0 to 1000 NTU Set the upper turbidity value (UPLM) that corresponds to the 20 mA output level. Baud • • • • • Set the correct baud rate for operation of the I/O port. Addr 1 ... 255 Select the desired device address. MBUS • ASCII • RTU Select ASCII or RTU. 485 8.1.2 Configuring the alarms Function Options Alarm 1 (ALM1) • HI • LO • OFF AUTO CAL Å CONFIG HI Info ALM1 Set point (S/P) 0 to 1000 NTU Set the desired alarm set point. Delay on (DLY▴) 1 to 30 s Set the desired number of seconds for the "Delay on" function. Delay off (DLY▾) 1 to 30 s Set the desired number of seconds for the "Delay off" function. Alarm 2 (ALM2) Set point (S/P) Endress+Hauser 1200 2400 4800 9600 19200 • HI • LO • OFF 0 to 1000 NTU Set the desired alarm set point. 19 Operation Turbimax CUE21 / CUE22 Function Options Info Delay on (DLY▴) 1 to 30 s Set the desired number of seconds for the "Delay on" function. Delay off (DLY▾) 1 to 30 s Set the desired number of seconds for the "Delay off" function. Function Options Info Alarm 1 (ALM1) • On • OFF If the security feature is switched on to restrict access, you are required to enter an access code if you wish to switch from AUTO to a different operating mode. The only valid code is 333. This code cannot be changed. 8.1.3 Access code AUTO On CAL Å CONFIG 8.1.4 CODE Advanced settings Function Options Info Extended settings (EXTD) • On • OFF Switch on the "Extended settings" function to access the configuration of the following options: • Response speed • Displayed resolution • LCD backlight brightness • Units • Ultrasonic cleaning • RS-485 parameters • Desiccant alarm Function Options Info Response speed (RESP) 1 to 100 % Factory setting: 10 Select the desired response speed for the NTU values that are displayed and output. Select the lowest speed (highest number) to avoid displaying the effects of air and other anomalies. Select the highest speed if there are rapid changes taking place in the process that require monitoring. The displayed number is a relative speed. The approximate response time (in seconds) is calculated by multiplying the displayed number by 5. Function Options Info Resolution (RES) 1 to 0.0001 For readings below 10 NTU the device can display Factory setting: 0.01 values with a resolution of up to four digits to the right of the decimal point. AUTO On CAL Å CONFIG EXTD Response speed AUTO 10 CAL Å CONFIG RESP Displayed resolution AUTO CAL Å 20 CONFIG 0.01 RES Endress+Hauser Turbimax CUE21 / CUE22 Operation LCD backlight brightness Function Options Info LCD backlight brightness (BRT) 1 to 10 Factory setting: 8 Adjust the backlighting for the display if necessary. Function Options Info Units (UNIT) • NTU • FNU AUTO 8 CAL Å CONFIG BRT Units AUTO CAL Å CONFIG NTU Select the desired unit for displaying the turbidity level: NTU (Nephelometric Turbidity Units) or FNU Factory setting: NTU (Formazin Nephelometric Units). UNIT Ultrasonic cleaning The "Ultrasonic cleaning" option is used for continuous cleaning of the flow-through cuvette. It is not intended to clean cuvettes that are already dirty, or to replace manual cleaning entirely. However, this system will increase the cleaning intervals dramatically. To operate correctly, the use of a cuvette with an ultrasonic transducer is required. The system transmits an ultrasonic frequency through a spring to a piezo transducer that is joined to the base of the flow-through cuvette. The cuvette's detection system works only in AUTO mode. The system can detect the following error conditions: • Incorrect cuvette installed • Error has occurred in the transducer • Transducer not making contact with the spring If an error has occurred, the message "CLN" appears in the lower part of the display. The alarms are set and 2mA is sent to the current output. The ultrasonic cleaning function is switched on as standard. After a cuvette has been inserted, the message "Dry" appears for a duration of 30 minutes in the lower part of the display. During this time, the desiccant removes residual moisture from the ultrasonic transducer and no ultrasonic cleaning takes place. At the same time, the error message "CLN" is reset and appears only after the 30 minutes have elapsed. Function Options Info Ultrasonic cleaning (CLN) • On • OFF The ultrasonic cleaning function can be turned off if desired. AUTO CAL Å Endress+Hauser CONFIG CLN On On 21 Operation Turbimax CUE21 / CUE22 RS-485 parameters Using basic programs, such as the Hilgraeve HyperTerminal (included in most Microsoft Windows software packages), the Turbimax can provide basic communication functions. You could also use Visual Basic or other programs. The standard communication parameters are: 8 bits, no parity and 1 stop bit. You can modify these parameters using the following menus. They will appear only if RS-485 was selected as the output (→  19). Function Options Info Bits (BITS) • 7 • 8 Select the required number of data bits for your communication software. AUTO CAL Å CONFIG BITS 8 Parity (PRTY) Factory setting: 8 • nOnE • ODD • E Select the required parity bit for your communication software. Factory setting: nOnE Stop • 1 • 2 Select the required stop bit for your communication software. Factory setting: 1 Sample communication The master computer requests a report from the Turbimax. • To this end, the master transmits the following to the Turbimax: – Byte #1 the initial character ":" in ASCII or "3A" Hex – Byte #2 the address of the Turbimax being queried – Byte #3, 4 "CR LF" in ASCII or "0D 0A" in Hex • The Turbimax responds with: – The same initial character ":" in ASCII or "3A" Hex – Its address – The display value for the turbidity content – The unit Communication would proceed as follows: ‣ The master computer requests a report from address 1: : 1 CRLF  The Turbimax, which is located at address 1, responds with: : 001 0.0249 NTU Desiccant alarm If the humidity detector in the Turbimax indicates that the humidity of the internal environment may lead to condensation, the device outputs the warning DESC. If desired, the desiccant warning can activate the alarms and send 2 mA to the current output. Function Options Info Desiccant alarm (DESC) • OFF • On Select "On" to activate the alarms as soon as the desiccant can no longer fulfil its function. AUTO CAL Å 22 CONFIG OFF Factory setting: OFF DESC Endress+Hauser Turbimax CUE21 / CUE22 Operation 8.2 Instrument calibration The device was calibrated and tested prior to leaving the factory. Therefore, it is possible to use it directly out of the box. Under normal conditions, recalibration is recommended at least once every three months. 1) Types of calibration • Complete three-point calibration This calibration is used if accuracy is required across the entire measuring range of the device, from 0.02 to 1000 NTU (CUE21) or 0.02 to 100 NTU (CUE22). If accuracy is required only in the range below 10.0 NTU, e.g. for drinking water, calibration may also be performed using only a 10.0 NTU and 0.02 NTU calibration standard. • Offset This method of calibration can be used if accuracy is required only in the immediate vicinity of the turbidity value of the sample. • The relay contacts remain in the last valid condition while the device is in calibration mode. • The device has a timeout function which causes it to revert automatically to AUTO mode after 15 minutes of inactivity. • During calibration, the fan located inside the device is switched off in order to extend the service life of the desiccant. The fan is switched on during calibration countdowns and after the device returns to AUTO mode or after five minutes (whichever comes first). It is recommended that the measurement chamber be kept covered during calibration and that the flow-through cuvette be inserted immediately after calibration to prevent premature saturation of the desiccant. 8.2.1 Calibrations standards To achieve the specified level of accuracy across the entire measuring range of the device, we recommend the following calibration standards: • 0.02 NTU • 10.0 NTU • 1000 NTU (CUE21) 100 NTU (CUE22) These calibrations standards are more stable than formazin and have a shelf life of 12 months. Prior to calibration, verify the expiry dates to ensure that these calibration standards have not expired. If you are using formazin to calibrate the device, ensure that a fresh formazin stock solution is used so that the specified accuracy is achieved. A a shelf life of 12 months is guaranteed for the 10.0 NTU calibration standard only if it is stored in the plastic bottle. Once it is transferred to a glass cuvette, it must be used for calibration immediately and then disposed of. 8.2.2 Indexing cuvettes To achieve the highest possible level of accuracy and to allow for normal scratches and signs of wear and tear on the cuvette glass when calibrating, we recommend that the cuvettes be indexed. Calibration standards and standard kits purchased from Endress +Hauser are supplied with indexing rings The following steps allow repeatable indexing of calibration standards: 1) 1. Shut off the flow using the shutoff clamp provided. 2. Remove the flow assembly with the flow-through cuvette. 3. Insert the calibration standard while the device is in AUTO mode. The EPA recommends that online turbidimeters be calibrated using a calibration standard at least once every three months if they are used for EPA reporting. Endress+Hauser 23 Operation Turbimax CUE21 / CUE22 4. Slowly rotate the calibration standard inside the optical path one complete revolution (360°).  While rotating the standard slowly, observe the measured value. Locate the position at which the lowest reading is displayed. 5. With the calibration standard positioned at the point with the lowest reading, install the indexing ring over the cap on the calibration standard . Make sure that the pointer of the indexing ring faces directly forward. When using the standards in future, always insert them in such a way that the pointer of the indexing ring faces forward. Slowly rotate the calibration standard back and forth by approx. 5° to find the lowest value. The calibration standard is now indexed and ready for use. 8.2.3 Three-point calibration First calibration point 1. Press the MODE/EXIT key until the calibration function is displayed.  The arrow appears beside "CAL". The lower part of the display alternates between 1000 (CUE21) or 100 (CUE22) (the value of the requested calibration standard) and . The upper part of the display shows the current measured value. If you wish to perform a two-point calibration for drinking water, press the  key to bypass the 1000 NTU or 100 NTU and to proceed with the second calibration point. 2. If the flow assembly with the flow-through cuvette has not yet been removed, remove it now. 3. Insert the requested calibration standard (1000 NTU or 100 NTU) so that the pointer of the indexing ring faces directly forward. 4. Find the lowest measured value by rotating the standard slowly back and forth by 5°.  Leave the standard in the position with the lowest reading. 5. Press the  key to accept the calibration.  In the lower part of the display, the stabilization time for this calibration step is counted down. Second calibration point 24 1. The lower part of the display alternates between 10 and , thereby requesting the 10.0 NTU calibration standard. , press the  or  key until the If the display does not alternate between 10 and specified information appears.  2. Insert the requested calibration standard so that the pointer of the indexing ring faces directly forward. Endress+Hauser Turbimax CUE21 / CUE22 Operation 3. Find the lowest measured value by rotating the standard slowly back and forth by 5°.  Leave the standard in the position with the lowest reading. 4. Press the  key to accept the calibration.  In the lower part of the display, the stabilization time for this calibration step is counted down. Third calibration point The lower part of the display alternates between 02 and 0.02 NTU calibration standard. , thereby requesting the 1. Insert the requested calibration standard so that the pointer of the indexing ring faces directly forward. 2. Find the lowest measured value by rotating the standard slowly back and forth by 5°.  Leave the standard in the position with the lowest reading. 3. Press the  key to accept the calibration.  In the lower part of the display, the stabilization time for this calibration step is counted down. When calibration is complete, the device returns to AUTO mode. 8.2.4 Offset In certain instances, it can be useful to use an offset instead of a three-point calibration. However, an offset cannot be used in lieu of regular calibration. Using this method, the device will provide accurate turbidity values only in the immediate vicinity of the sample value and not for the entire measuring range. The OFFSET icon is illuminated as soon as an offset is used. The maximum offset is 1.00 NTU. If the device deviation is greater than 1 NTU, a full calibration is recommended. Configuring the offset Endress+Hauser 1. Take a sample of the process medium that is being monitored by the device, and record the turbidity values reported by the device. 2. Measure the turbidity of the sample using a laboratory turbidimeter (e.g. Turbimax CUE23 / CUE24). 3. Compare the turbidity value reported by the device to the value measured in the lab.  If the values are very close, no offset adjustment is required and the procedure can be stopped at this point. If the values differ substantially (but by less than 1 NTU), continue the procedure to configure an offset. 4. Select the offset function by pressing the MODE/EXIT key until the arrow appears next to CONFIG. 25 Operation Turbimax CUE21 / CUE22 5. Press the  key until OFST is displayed in the lower line.  At this point, the upper line of the display indicates the operating status of the offset function. If the function is switched off, switch it on by pressing  or . 6. The offset is the difference between the NTU value measured by the device and the value measured by the lab device. Example: CUE21 / CUE22 measures 0.016 NTU, while the lab device calculates a value of 0.012 NTU for the same sample. Entering an offset of -0.04 results in the CUE21 / CUE22 also displaying 0.012 NTU. Select the desired offset value using the  or  keys. Press the  key to accept the value.  This completes offset configuration. The device is still in configuration mode (CONFIG). Press the MODE/EXIT key to return to AUTO mode. 26 Endress+Hauser Turbimax CUE21 / CUE22 Diagnostics and troubleshooting 9 Diagnostics and troubleshooting 9.1 General troubleshooting 9.1.1 Troubleshooting instructions The device performs continuous diagnostic monitoring. Any errors are displayed in a queue in the bottom line of the display. The Turbimax provides three levels of fault detection: • Warning A warning is simply a message on the display indicating that a problem exists. No alarms are activated. If, for example, the desiccant alarm function is disabled and the desiccant becomes saturated, the warning DESC will appear on the display. • Error An error indicates a fault or a problem that can usually be corrected by the operator. This includes, for example, a lamp outage (LAMP) or an incorrect calibration (CAL). If an error occurs, both alarm relays are activated and the current output is maintained at 2 mA. While the device continues to display values, you should not rely on these values as their accuracy is not known. • Failure A failure is a system fault. This is a problem that cannot be corrected by the operator. The unit must be returned to the factory for service. These failures consist of failures in the CPU, A/D, EEPROM or other devices internal to the instrument. If a failure occurs, the device will not function properly and will display the message FAIL in the bottom line of the display. Both alarm relays are activated and the current output is maintained at 2 mA. 9.1.2 Process-related errors Error Possible cause Tests or remedial action Display values are higher than expected Bubbles in solution Ensure that vent in drain tube is open and not obstructed (→  10) Condensate or leaky cuvette Check flow-through cuvette for condensate or leaks Flow-through cuvette dirty Clean cuvette (→  29). Device is no longer correctly calibrated Recalibrate device (→  23) Bubbles in solution see above Debris in flow-through cuvette Remove debris from cuvette Display values are lower than expected Device is no longer correctly calibrated Recalibrate device (→  23) Upper part of display flashing Sample has exceeded permitted range Check sample. Turbidity of sample may be too high to be read by the device. Display values are incorrect 9.2 Endress+Hauser Diagnostic information on local display Diagnostic message Possible cause Tests or remedial action MA 4 to 20 mA loop is open Check wiring (→  13, →  19). DESC Desiccant pouch saturated Replace desiccant pouch (→  30). LAMP Lamp failed Have lamp replaced. Contact sales office. 27 Diagnostics and troubleshooting 28 Turbimax CUE21 / CUE22 Diagnostic message Possible cause Tests or remedial action FLOW Sample flow has stopped Restore flow CLN Ultrasonic transducer in flowthrough cuvette not making contact Rotate the flow-through cuvette slightly to improve the connection. If the problem persists, replace the cuvette. Flow-through cuvette removed Insert flow-through cuvette FAIL Major system fault Contact sales office. DRY Drying period Disappears automatically after a period of 30 minutes. Endress+Hauser Turbimax CUE21 / CUE22 Maintenance 10 Maintenance Take all the necessary precautions in time to ensure the operational safety and reliability of the entire measuring system. NOTICE Effects on process and process control ‣ When carrying out any work on the system, take into account possible repercussions for process control or the process itself. ‣ For your own safety, only use genuine accessories. With genuine parts, the function, accuracy and reliability are also ensured after maintenance work. 10.1 Cleaning the flow-through cuvette The cuvettes should always be clean and free of marks and scratches. 1. Clean the inside of the cuvette using a cleaning solution. 2. Rinse the cuvette several times using distilled or deionized water. 3. If external dirt or scratches cannot be removed: Replace the cuvette. To do so, read the next section. 10.2 Replacing the flow-through cuvette NOTICE Moisture on the cuvette or transducer High risk of damage to sensor electronics or transducer ‣ Check the cuvette prior to installation. It must be completely dry. 1 2 MODE EXIT E A0026688 8 1 2 Endress+Hauser Replacing the cuvette Flow assembly Cuvette 1. Shut off flow at the Turbimax using the shutoff clamp provided. 2. Remove the flow assembly (item 1) from the device. 3. Unscrew the old cuvette (item 2). 4. Verify that the new cuvette is clean, dry and free of scratches or other marks. Carefully screw the cuvette into the flow assembly making sure not to leave fingerprints on the cuvette. 5. Insert the cuvette with the flow assembly into the device and lock the flow assembly.  After inserting the clean cuvette, the message "DRY" is displayed during the drying phase. 29 Maintenance Turbimax CUE21 / CUE22 10.3 Replacing the desiccant pouch Correct use of the desiccant supplied is essential in maintaining the performance of the device. In addition, the housing seal must be maintained to guarantee the standard service life of the desiccant. Inspect this seal each time the desiccant pouch is replaced. Replace the desiccant when the device outputs a desiccant alarm (DESC). 1 1 Humidity indicator 2 Desiccant pouch 3 Housing seal 4 Base of housing 2 3 4 A0026690 9 Replacing desiccant 1. Switch off the power supply to the device. 2. Unscrew the four corner screws (item 1). 3. Remove the device's electronic component. 4. Remove the used desiccant pouch (item 2). 5. Check the housing seal (item 3) on the base of the housing.  Replace it if necessary. 6. Open the bag protecting the new desiccant pouch and place the desiccant pouch and the humidity indicator (item 1) in the base of the housing (item 4).  Ensure that you install the desiccant pouch immediately after opening the bag to prevent premature degradation of the desiccant. 7. Return the electronic component of the device to its original position. 8. Tighten the four corner screws. 9. Switch the power supply to the device back on.  The device starts up. Wait for initialization. 10. To speed up detection of the new desiccant, the device must be reset. This is done by removing the sensor interconnect cable from the device for 2 seconds and then reconnecting it. 30 Endress+Hauser Turbimax CUE21 / CUE22 Repairs 11 Repairs 11.1 Spare parts Description and contents Order number Electronic service module for CUE21, infrared 71030103 Electronic service module for CUE22, white light 71030104 Terminal box CUE21 / CUE22 71030105 Desiccant with indicator card, refill pack 51518578 Tubing kit including: • 1 shutoff clamp • 1 flow controller • 2 connecting tubes with fittings for flow assembly • Vent for drain tube 51518579 Replacement cuvette with ultrasonic transducer for use of the ultrasonic cleaning function 51518576 Pressure regulator for CUE21/22 71085512 11.2 Replacing the electronics module 1 2 1 Securing screws 2 Electronics module 3 Base of housing 3 1 A0026681  10 Replacing the electronics module 1. Unscrew the four corner screws (item 1). 2. Remove the electronics module (item 2) from the housing base (item 3). 3. Place the new electronics module on the housing base. 4. Secure using the four screws. 11.3 Replacing the lamp The lamps in the device have an operating life of approx. 10 years. Should the lamp need to be replaced, please contact your sales office. Endress+Hauser 31 Repairs Turbimax CUE21 / CUE22 11.4 Return The product must be returned if repairs or a factory calibration are required, or if the wrong product was ordered or delivered. As an ISO-certified company and also due to legal regulations, Endress+Hauser is obliged to follow certain procedures when handling any returned products that have been in contact with medium. To ensure swift, safe and professional device returns, please read the return procedures and conditions at www.endress.com/support/return-material. 11.5 Disposal The device contains electronic components and must therefore be disposed of in accordance with regulations on the disposal of electronic waste. Observe the local regulations. 32 Endress+Hauser Turbimax CUE21 / CUE22 Accessories 12 Accessories The following are the most important accessories available at the time this documentation was issued. For accessories not listed here, please contact your service or sales office. 12.1 Calibration solutions Calibration kit CUE21 / CUE23 / CUE24 • Complete measuring range: – 0.02 NTU – 10.0 NTU – 1000 NTU • Order No.: 51518580 Calibration kit CUE22 • Complete measuring range: – 0.02 NTU – 10.0 NTU – 100 NTU • Order No.: 71030102 12.2 Flow chamber Flow chamber CUE21 / CUE22 • To suppress air bubbles • Order no.: 51518575 12.3 Passive barrier RB223 • Loop-powered passive barrier • For galvanic isolation of active signal circuits (0 to 20 mA) • Product Configurator on the product page: www.endress.com/rb223 Technical Information RB223, TI00132R Endress+Hauser 33 Technical data Turbimax CUE21 / CUE22 13 Technical data 13.1 Input Measured variables Turbidity Measuring ranges CUE21: CUE22: 13.2 0 to 1000 NTU / FNU 0 to 100 NTU / FNU Output Output signal 0/4 to 20 mA Signal on alarm Error current: 2 mA Load max. 600 Ω Relay output Switching voltage: Switching current: Communication interface Bi-directional RS-485, optional Modbus Limit value and alarm functions Setpoint adjustment: CUE21 CUE22 Alarm delay: 13.3 max. 240 VAC max. 2 A 0 to 1000 NTU 0 to 100 NTU 0 to 30 s Power supply Supply voltage 100 to 240 VAC, 47 to 63 Hz, 80 VA switching power supply Overvoltage protection Category II Protection class 2 13.4 Performance characteristics Response time adjustable from 1 to 100 % (approx. 5 to 500 s) Reference temperature 25 °C (77 °F) 34 Endress+Hauser Turbimax CUE21 / CUE22 Technical data Measured value resolution 0.0001 NTU (below 10 NTU) Maximum measured error below 40 NTU: above 40 NTU: Repeatability ±2 % of display value or ±0.02 NTU - depending on which value is higher ±5 % of display value ±1% of reading 13.5 Environment Ambient temperature 2 to 50 °C (36 to 120 °F) Storage temperature -20 to +60 °C (0 to 140 °F) Humidity 0 to 95 %, non-condensating Altitude <2000 m (6500 ft) Degree of protection IP66 Pollution degree The product is suitable for pollution degree 2. 13.6 Process Process temperature 2 to 50 °C (36 to 120 °F) Process pressure max. 13.78 bar (200 psi), controlled by integrated flow controller Flow 0.1 to 1 l/min (0.026 to 0.26 US gal/min) 13.7 Mechanical construction Dimensions H x W x D: Weight 2.0 kg (4.4 lbs) Endress+Hauser 347 x 208 x 197 mm (13.7 x 8.18 x 7.75 inch) 35 Technical data Materials Light sources 36 Turbimax CUE21 / CUE22 Housing: ABS Flow assembly: Nylon Cuvette: Borosilicate glass Cuvette seal: Silicone Fittings (assembly): Polypropylene Locking pins (assembly): Stainless steel (AISI 304 or AISI 303) Intake tubing: Stainless steel (AISI 316) CUE21: CUE22: Infrared LED, 860 nm White light tungsten lamp, ~600 nm, 2250 K Endress+Hauser Turbimax CUE21 / CUE22 Index Index A Access code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Advanced settings . . . . . . . . . . . . . . . . . . . . . . . . . . . Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . 16 20 35 35 N C Certificates and approvals . . . . . . . . . . . . . . . . . . . . . . 7 Check Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Cleaning the flow-through cuvette . . . . . . . . . . . . . . . 29 Connection requirements . . . . . . . . . . . . . . . . . . . . . . 13 D Degree of protection . . . . . . . . . . . . . . . . . . . . . . 14, 35 Desiccant pouch Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Diagnostic information . . . . . . . . . . . . . . . . . . . . . . . 27 Display and operating elements . . . . . . . . . . . . . . . . . 16 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . 13 F Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 H Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 I Incoming acceptance . . . . . . . . . . . . . . . . . . . . . . . . . 6 Installation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Installation requirements . . . . . . . . . . . . . . . . . . . . 8 Mounting the measuring device . . . . . . . . . . . . . . . 9 Installation requirements Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . 8 Mounting location . . . . . . . . . . . . . . . . . . . . . . . . . 9 L Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measured error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measured value resolution . . . . . . . . . . . . . . . . . . . . . Measured variables . . . . . . . . . . . . . . . . . . . . . . . . . . Measuring device Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Endress+Hauser Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 O Operating concept . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Operating keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Operation Configuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Operation options . . . . . . . . . . . . . . . . . . . . . . . . . 16 Output signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . 34 P Pollution degree . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Process pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Process temperature . . . . . . . . . . . . . . . . . . . . . . . . . 35 Process-related errors . . . . . . . . . . . . . . . . . . . . . . . . 27 Product identification . . . . . . . . . . . . . . . . . . . . . . . . . 6 R E M Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operation options . . . . . . . . . . . . . . . . . . . . . . . . . 16 Switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Measuring ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 29 35 35 34 23 19 Reference temperature . . . . . . . . . . . . . . . . . . . . . . . Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing Desiccant pouch . . . . . . . . . . . . . . . . . . . . . . . . . . Electronics module . . . . . . . . . . . . . . . . . . . . . . . . Flow through cuvette . . . . . . . . . . . . . . . . . . . . . . Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the electronics module . . . . . . . . . . . . . . . . Replacing the flow-through cuvette . . . . . . . . . . . . . . Response time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 31 35 30 31 29 31 31 29 34 32 S Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Signal on alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . 35 Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 T Technical data Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical construction . . . . . . . . . . . . . . . . . . . . Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance characteristics . . . . . . . . . . . . . . . . . 35 34 35 34 34 37 Index Turbimax CUE21 / CUE22 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 U Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 38 Endress+Hauser *71292787* 71292787 www.addresses.endress.com