Endress+Hauser Liquiline M CM42 Technical Information
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Endress+Hauser Liquiline M CM42 Technical Information

Two-wire transmitter for ex and non-ex areas analog sensors: ph/orp/conductivity/concentration/resistivity digital sensors: ph/orp/oxygen
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Technical Information
Liquiline M CM42
Two-wire transmitter for Ex and non-Ex areas
Analog sensors: pH/ORP/conductivity/concentration/resistivity
Digital sensors: pH/ORP/oxygen
Application
Liquiline M CM42 is a modular two-wire transmitter for all
areas of process engineering.
Depending on the ordered version, Liquiline has one or two
analog current outputs or it can be connected to field buses as
per FOUNDATION Fieldbus, PROFIBUS PA and Hart protocol.
Liquiline is developed acc. to the international safety standard
IEC 61508.
The extremely robust, corrosion-resistant plastic version and
the hygienic stainless steel version are designed for the
following applications:
• Chemical processes
• Pharmaceuticals industry
• Foodstuff technology
• Applications in hazardous locations
TI381C/07/en/10.06
51517610
1
Your benefits
• Cost-saving:
– Simple commissioning with Quick Setup and Navigator
(multifunction button)
– Thanks to Memosens technology, a calibration in the plant
is not required
– Predictive maintenance system detects when a sensor has
to be cleaned, calibrated or replaced
– Less storage thanks to modular design
• Safe:
– Active display of cable interruption with Memosens
version
– Red alarm LED reports error immediately
– User-guided commissioning, graphic display and plain text
guidance
– ATEX, FM, CSA, NEPSI
– Code-protected commissioning and calibration
• Industry solutions:
– Modular concept: sensor module replaceable
– Asset management (Fieldcare, W@M)

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Summary of Contents for Endress+Hauser Liquiline M CM42

  • Page 1 Analog sensors: pH/ORP/conductivity/concentration/resistivity Digital sensors: pH/ORP/oxygen Application Your benefits Liquiline M CM42 is a modular two-wire transmitter for all • Cost-saving: areas of process engineering. – Simple commissioning with Quick Setup and Navigator Depending on the ordered version, Liquiline has one or two...

  • Page 2: Table Of Contents

    Table of contents General features ......3 Relative humidity ........24 Modular design .

  • Page 3: General Features

    General features Modular design a0001296 a0004956 Inside Liquiline (version with sensor module, without wiring) CPU and sensor module Quick setup To the first measuring value within 1 minute After setting up the few parameters in the Quick Setup menu, the measuring point is ready to measure. The first measured value is reliably displayed.

  • Page 4: Memosens

    Memosens The measuring point is safer with Memosens: • No-contact, inductive signal transmission, thus optimum galvanic separation • No contact corrosion • Completely water-tight • Automatic error message if data flow interrupted • Sensor calibration possible in laboratory • Look-ahead maintenance thanks to recording of sensor data, e.g.: –...

  • Page 5: Safety

    Safety Safety integration level acc. to IEC 61508 (SIL 2) Liquiline is the first analysis transmitter to be developed to IEC 61508. The development to SIL 2 reduces the probability of hidden errors and stands for the highest degree of reliability.

  • Page 6: Conductivity

    Conductivity Polarization monitoring Polarization effects in the boundary layer between the sensor and the solution to be measured limit the measuring range of conductive conductivity sensors. The transmitter can detect and indicate polarization effects using an innovative, intelligent signal evaluation process.

  • Page 7: Measuring System

    Measuring system a0002012 Measuring system: Examples pH / ORP Conductivity, inductive Conductivity, conductive Digital sensor • CM42-P/R... measurement measurement • CM42-M/N/O... • Measuring cable CPK9 • CM42-I... • CM42-C... • Measuring cable CYK10 • Assembly Cleanfit CPA471 • Assembly Dipfit CLA111 •...

  • Page 8: Input

    Input pH / ORP (analog sensors) Measured variable • pH value • Oxidation-reduction potential (ORP) • Temperature Measuring range pH value –2 to 16 –1500 to +1500 mV Temperature –25 to + 150 °C (–10 to 300 °F) Cable specification Without SCS 50 m (160 ft) max.

  • Page 9: Ph/Orp (Digital Sensors) Oxygen (Digital Sensors)

    Cable specification Conductivity/resistivity, conductive measured Two-electrode sensor 100 m (330 ft) max. cable length k / 0.1 MΩ/k to 50 Ω/k 10 μS k to 20 mS 50 m (160 ft) max. cable length k / 0.2 MΩ/k to 50 Ω/k 5 μS k to 20 mS 15 m (50 ft) max.

  • Page 10: Output

    Cable specification With Memosens 100 m (330 ft) max. cable length Ex specification Intrinsically safe sensor circuit with type of protection: EEx ia IIC T6 Max. output voltage U 5.04 V Max. output current I 80 mA Max. output P 112 mW For connection to the special measuring cable CYK10 Output...

  • Page 11: Ex Specification Profibus Pa And Foundation Fieldbus

    Ex specification PROFIBUS PA Suitable for use in a FISCO system and FOUNDATION Fieldbus Max. input voltage U 17.5 V Max. input current I 380 mA Max. input P 5.32 W Max. internal inductivity L negligible Max. internal capacity C negligible Wiring Housing grounding...

  • Page 12: Supply And Signal Circuit

    Supply and signal circuit 4 ... 20 mA Note! Connect the transmitter via a two-wire cable. The second current output is an option (see "Ordering information"). Out 1 – Out 2 – a0005037 a0005038 View in device (CPU module) Wiring diagram ®...
  • Page 13 Version 1: "Hard grounding" • Place the cable shield on the "Fixing plate". • Connect the cable wires as per the assignment. a0004060 a0001640 View in device (CPU module) Wiring diagram Version 2: "Capacitive grounding" • Strip back the shield braiding, push the extension wire of the C module (pos. 1) onto the exposed shield and fasten the clip: •...

  • Page 14: Supply Voltage

    a0002378 a0004062 View in device (CPU module) Wiring diagram Cable specification Max. cable cross-section: 2.5 mm (i14 AWG), GND 4 mm (i12 AWG) Supply voltage ® Current output 4 to 20 mA without Hart 12.5 to 30 V DC ® Current output 4 to 20 mA with Hart 12.5 to 30 V DC PROFIBUS / FOUNDATION Fieldbus:...

  • Page 15: Sensor Connection: Ph / Orp

    Sensor connection: pH / ORP Glass electrodes with PML (symmetrical) CM42 CPK9 Sensor CPK1 a0001088 a0001079 View in device Wiring diagram Glass electrodes without PML (asymmetrical) CM42 CPK9 / CPK1 Sensor CPK1 d.n.c. a0001089 a0001080 View in device Wiring diagram...
  • Page 16 ISFET sensors with PML (symmetrical) CM42 CPK12 Sensor a0001090 a0001076 View in device Wiring diagram ISFET sensors without PML (asymmetrical) CPK12 Sensor CM42 d.n.c. a0001084 a0001077 View in device Wiring diagram...
  • Page 17 Pfaudler electrode, absolute Pfaudler electrode, relative type 03 / type 04 type 18 / type 40 / Reiner type a0006051 a0006052 Wiring diagram Wiring diagram...

  • Page 18: Sensor Connection: Conductivity

    Sensor connection: Conductive sensors, two-electrode sensors conductivity CM42 CPK9 / CYK71 Sensor d.n.c. a0001086 a0001083 View in device Wiring diagram Conductive sensors, four-electrode sensors CM42 Sensor a0002363 a0002371 View in device (sensor module) Wiring diagram...

  • Page 19: Sensor Connection: Ph/Orp/Isfet/Oxygen (Digital Sensors)

    Inductive sensors a0001085 a0001082 View in device Wiring diagram Sensor connection: pH/ORP/ISFET/oxygen (digital sensors) a0001087 a0001078 View in device Wiring diagram...

  • Page 20: Performance Characteristics

    Performance characteristics pH / ORP Reference temperature 25 °C (77 °F) Measured value resolution pH (glass electrodes and ISFET sensors) 0.01 pH ORP: 1 mV Temperature: 0.1 °C (0.1 °F) SCS glass electrodes: Glass: 100 kΩ 100 Ω Reference: Leak current, ISFET sensors: 100 nA Maximum measured error pH (glass electrodes and ISFET sensors)

  • Page 21: Ph/Orp/Oxygen (Digital Sensors)

    Maximum measured error Conductivity, conductive measured Two-electrode sensors 0.5 % from measured value ±0.01 μS Four-electrode sensors 0.5 % from measured value ±0.01 μS 1.0 % from measured value ±0.01 μS 2.0 % from measured value ±0.01 μS Conductivity, inductive measured 0.5 % from measured value ±1.7 μS Resistivity, conductive measured 0.5 % from measured value ±0.01 μS...

  • Page 22: Installation

    Maximum measured error 0.01 pH 1 mV Leakage current ISFET sensors 100 nA Oxygen 1% of measured value Temperature Maximum measured error Current outputs, additionally 20 μA of current outputs Installation Mounting plate a0001075-en Mounting plate Weather protection cover Plastic housing a0001671-en Weather protection cover acc.

  • Page 23: Mounting Options

    Stainless steel housing a0001676 Weather protection cover CYY101 Wall mounting Pipe or round post mounting Round post fixture (Accessories) Note! To fix the stainless steel weather protection cover CYY101 to vertical or horizontal pipes or round posts, you need the additional round post fixture, --> "Accessories". Mounting options a0002166 a0003092...

  • Page 24: Installation In Ex Area

    Installation in Ex area a0001312-en Installation in Ex area Sensor in Ex version Active barrier, e.g. Preline RN221 Intrinsically safe sensor circuit EEx ia Signal line Hart/PROFIBUS/FF Transmitter Fieldcare via PROFIBUS/FF Supply and signal circuit EEx ib (4...20 mA) Hart handheld terminal Environment Ambient temperature range Non-hazardous area version...

  • Page 25: Mechanical Construction

    Mechanical construction Dimensions Plastic housing a0001074-en Plastic housing Stainless steel housing 26 / 1.02 132.5 / 5.22 134.5 / 5.30 136.5 / 5.37 136.5 / 5.37 220 / 8.66 174 / 6.85 mm / inch a0001073-en Dimensions...

  • Page 26: Weight

    Weight Plastic housing 1.5 kg (3.3 lb) Stainless steel housing 2.1 kg (4.6 lb) Material Plastic housing Housing: Polycarbonate Housing seals: EPDM Stainless steel housing Housing: Stainless steel 1.4301 (AISI 304) Housing seals: Foamed silicone, EPDM Human interface Operating elements a0001301 Overview of operation Display, current display: pH measuring mode...

  • Page 27: Ordering Information

    Ordering information Product structure Sensor input No Module Conductivity, conductive measurement Conductivity, inductive measurement Digital sensor: turbity Digital sensor: conductivity, conductive measurement Digital sensor: conductivity, inductive measurement Digital sensor: pH/ORP with glass electrodes Digital sensor: pH with ISFET sensors Digital sensor: amperometric oxygen measurement pH (glass/ISFET) or ORP pH/ORP glass (2 high In+1 Ref) or ISFET Approval...

  • Page 28: Scope Of Delivery

    Scope of delivery The scope of delivery comprises (depending on the device version): • A transmitter acc. to the ordered version • A mounting plate including 4 screws • A sticker sheet (embedded in the housing, containing nameplates and terminal assignment stickers) •...

  • Page 29: Measuring Cables

    • M12 connector – Four-pole metal connector for mounting on transmitter. For connecting to connection box or cable jack. Cable length 150 mm (5.91"). – order no. 51502184 • C-module accessories bag – capacitor for connecting the cable shielding to ground potential –...
  • Page 30 ISFET sensors • Tophit CPS471/CPS471D Sterilizable and autoclavable ISFET sensor for food and pharmaceuticals, process technology, water treatment and biotechnology; Ordering acc. to product structure, see Technical Information (TI283/C07/en) • Tophit CPS441/CPS441D Sterilizable ISFET sensor for media with low conductivity, with liquid KCl electrolyte; Ordering acc.

  • Page 31: Documentation

    Documentation Operating Instructions CM42 • Liquiline M CM42, Operating Instructions, BA381C/07/en and BA382C/07/en The Operating Instructions correspond to the device version. Methods for (re-) ordering: – Re-order the BA by specifying the serial number of your device (via your local Sales Center) –...
  • Page 32 TI381C/07/en/10.06 Printed in Germany / FM+SGML 6.0 / POD/ 51517610...

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