Specs at a glance
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Input
One channel transmitter for Memosens and analog (pH, ORP, conductivity)
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Output / communication
1/2 x 4 to 20 mA, HART, Profibus, FF
Additional second output possible, also later -
Ingress protection
IP66/67, NEMA 4X
Field of application
Liquiline M CM42 is the robust transmitter for pH/ORP, conductivity or oxygen measurement in all process applications. It is the best choice for demanding environments be it hygienic applications, hazardous areas or functional safety areas. Liquiline’s intuitive operating concept simplifies commissioning, handling, and maintenance saving you time every day. Easy switching of parameters and seamless system integration give you the flexibility to adapt it exactly to your measuring task.
The Liquiline CM42 transmitter is suitable for all process applications, for example in these industries and their utilities:
Chemicals
Food & Beverages
Life Sciences
Power & Energy
Oil & Gas
Primaries & Metal
Liquiline CM42 features the following protocols and interfaces:
0/4...20 mA
HART
PROFIBUS PA
FOUNDATION Fieldbus
With its international explosion protection approvals, such as IECEx, ATEX, FM, CSA, TIIS and NEPSI, the transmitter is suitable for hazardous area use.
Benefits
Simple commissioning with quick setup and navigator
The Memosens technology allows plug & play with pre-calibrated Memosens sensors
Less storage thanks to modular design
Predictive maintenance system detects when a sensor has to be cleaned, calibrated or replaced
Videos
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Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.
Extended selection
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High-end products
- Highly functional and convenient
Technical excellence
Simplicity
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
-
Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
| FLEX selections | Technical excellence | Simplicity |
|---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
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Measuring principle
ISFET
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Application
Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas
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Characteristic
Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering
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Measuring principle
Potentiometric pH measurement
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Design
Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol
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Material
Plastic or stainless steel housing with EPDM sealings
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Dimension
Plastic housing:
144 x 144 x 148 mm
5.67 x 5.67 x 5.83 inch
Stainless Steel:
174 x 174 x 134 mm
6.85 x 6.85 x 5.28 inch -
Temperature sensor
Applicable:
Pt100, Pt1000, NTC 30K -
Ex certification
: ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex
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Ingress protection
IP66/67, NEMA 4X
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Input
One channel transmitter for Memosens and analog (pH, ORP, conductivity)
-
Output / communication
1/2 x 4 to 20 mA, HART, Profibus PA, FF
Additional second output possible, also later
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Measuring principle
Sensor ORP / Redox
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Application
Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas
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Characteristic
Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering
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Measuring principle
ORP measurement
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Design
Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol
-
Material
Plastic or stainless steel housing with EPDM sealings
-
Dimension
Plastic housing:
144 x 144 x 148 mm
5.67 x 5.67 x 5.83 inch
Stainless Steel:
174 x 174 x 134 mm
6.85 x 6.85 x 5.28 inch -
Temperature sensor
Applicable:
Pt100, Pt1000, NTC 30K -
Ex certification
ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex
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Ingress protection
IP66/67, NEMA 4X
-
Input
One channel transmitter for Memosens and analog (pH, ORP, conductivity)
-
Output / communication
1/2 x 4 to 20 mA, HART, Profibus, FF
Additional second output possible, also later
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Measuring principle
Conductive
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Application
Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas
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Characteristic
Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering
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Measuring principle
Resistance measurement
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Design
Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol
-
Material
Plastic or stainless steel housing with EPDM sealings
-
Dimension
Plastic housing:
144 x 144 x 148 mm
5.67 x 5.67 x 5.83 inch
Stainless Steel:
174 x 174 x 134 mm
6.85 x 6.85 x 5.28 inch -
Temperature sensor
Applicable:
Pt100, Pt1000 -
Ex certification
ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex
-
Ingress protection
IP66/67, NEMA 4X
-
Input
One channel transmitter for Memosens and analog (pH, ORP, conductivity)
-
Output / communication
1/2 x 4 to 20 mA, HART, Profibus PA, FF
Additional second output possible, also later
-
Measuring principle
Amperometric oxygen measurement
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Application
Chemical processes, pharmaceuticals industry, foodstuff technology, applications in hazardous areas
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Characteristic
Liquiline M CM42 is a modular two-wire transmitter for all areas of process engineering
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Measuring principle
Connection of oxygen sensors with Memosens coupling
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Design
Depending on the ordered version, Liquiline M CM42 has one or two analog current outputs or it can be connected to field busses as per FOUNDATION Fieldbus, PROFIBUS PA and HART protocol
-
Material
Plastic or stainless steel housing with EPDM sealings
-
Dimension
Plastic housing:
144 x 144 x 148 mm
5.67 x 5.67 x 5.83 inch
Stainless Steel:
174 x 174 x 134 mm
6.85 x 6.85 x 5.28 inch -
Ex certification
ATEX, IECEx, FM, CSA, NEPSI, EAC, UKEx, JPN Ex
-
Ingress protection
IP66/67, NEMA4X
-
Input
One channel transmitter for Memosens and analog (pH, ORP, conductivity)
-
Output / communication
1/2 x 4 to 20 mA, HART, Profibus PA, FF
Additional second output possible, also later
-
-
Technical Information (TI)
TI Liquiline M CM42
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Technical Information (TI)
English version - 08/2025New version available in EnglishTwo-wire transmitter for hazardous and non-hazardous areas
EN 18/08/202515/10/2020Language:
English
Version:
18/08/2025
File size:
4.5 MB
File name:
TI00381CEN_1725-00.pdf
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Short Instruction (KA)
Liquiline CM42
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Short Instruction (KA)
Russian version - 01/2021New version available in EnglishВторичный измерительный преобразователь для измерения pH/ОВП,
проводимости или концентрации кислородаLanguage:
Russian
Version:
31/01/2021
File size:
3.6 MB
File name:
KA01481CRU_0121.pdf
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Ex Safety Instruction (XA)
XA Liquiline M CM42
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Ex Safety Instruction (XA)
English version - 07/2025New version available in EnglishTwo-wire transmitter for hazardous areas
EAC 1Ex ib [ia Ga] IIC T6/T4 Gb XEN 28/07/202501/01/2021Language:
English
Version:
28/07/2025
File size:
429.1 KB
File name:
XA01504CEN_0325-00.pdf
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Ex Safety Instruction (XA)
XA Liquiline M CM42
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Ex Safety Instruction (XA)
English version - 05/2025New version available in EnglishTwo-wire transmitter for hazardous areas
ATEX II 3G Ex ec [ic Gc] IIC T6 Gc
NEPSI Ex ec [ic Gc] IIC T6 GcEN 27/05/2025Language:
English
Version:
27/05/2025
File size:
536.3 KB
File name:
XA03517CEN_0125-00.pdf
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Ex Safety Instruction (XA)
Liquiline M CM42
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Ex Safety Instruction (XA)
Chinese version - 06/2022New version available in EnglishNEPSI Ex ib [ia Ga] IIC T4/T6 Gb
防爆危险区电气设备使用安全指南Language:
Chinese
Version:
13/06/2022
File size:
1.1 MB
File name:
XA02858CZH_0122-00.pdf
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Ex Safety Instruction (XA)
XA Liquiline M CM42
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Ex Safety Instruction (XA)
English version - 10/2024New version available in EnglishTwo-wire transmitter for hazardous areas
INMETRO Ex ib [ia Ga] IIC T6/T4 GbEN 31/10/2024Language:
English
Version:
31/10/2024
File size:
440.4 KB
File name:
XA03395CEN_0124-00.pdf
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Ex Safety Instruction (XA)
XA Liquiline CM42
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Ex Safety Instruction (XA)
French version - 12/2023New version available in EnglishTransmetteur 2 fils pour zones explosibles
FM IS NI Cl.I Div.1&2, Groupes A-D
CSA IS NI Cl.I,II,III Div.1&2, Groupes A-GLanguage:
French
Version:
14/12/2023
File size:
1.2 MB
File name:
XA01687CFR_0623-00.pdf
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Manufacturer Information (MI)
PRM HART Package V1.05.00 Herstellerinformation beinhaltet PRM - Geräteliste, Freigabehinweise – HART
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Manufacturer Information (MI)
German version - 04/2014New version available in EnglishHerstellerinformation für Anwender betreffend Softwareänderungen (in
Anlehnung an NAMUR-Empfehlung 53)
Neue Software Version: 1.05.00Language:
German
Version:
08/04/2014
File size:
403.8 KB
File name:
MI00099S_04_de_06.14.pdf
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Fields of Activities (FA)
Endress+Hauser 水質分析計ファミリ
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Fields of Activities (FA)
Japanese version - 03/2017New version available in Englishラインナップと事例
Language:
Japanese
Version:
23/03/2017
File size:
34.8 MB
File name:
FA00007CJA_2022_Endress Hauser liquid analysis family.pdf
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Fields of Activities (FA)
Sensoren, Messumformer, Kompaktgeräte and Armaturen
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Fields of Activities (FA)
German version - 02/2026New version available in EnglishKompetenz in der Flüssigkeitsanalyse
Language:
German
Version:
02/02/2026
File size:
4.3 MB
File name:
FA00007C_DE_Analyse_22-26_LowRes.pdf
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