
Specs at a glance
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Input
1 to 2x Memosens digital input
2x 0/4 to 20mA input optional
2x Digital input optional -
Output / communication
2 to 8x 0/4 to 20 mA current outputs
Alarmrelay, 2x relay, ProfibusDP, Modbus RS485, Modbus TCP, Ethernet -
Ingress protection
IP66 / IP67
Field of application
The Liquiline CM442 transmitter allows you to connect up to 2 Memosens sensors of your choice from over 12 measurement parameters. It offers automatic sensor recognition, easy operation, and standardized spare parts with all other devices of the Liquiline platform. With its inputs, outputs, controllers, and math modules, you can even control cleaning systems or dosing pumps. Heartbeat Technology helps you find the ideal balance between measuring point availability and maintenance costs.
Liquiline CM442 is suitable for all industries and their utilities, such as:
Food & Beverages
Life Sciences
Power & Energy
Water & Wastewater
Chemicals
Marine
It features the following communication protocols and interfaces:
0/4...20 mA
HART
PROFIBUS DP
Modbus RS485/RTU
Modbus TCP
EtherNet/IP
PROFINET
Webserver
The transmitter can be extended with a module whose explosion protection approvals, such as IECEx, ATEX, and CSA, allow the connection of sensors installed in hazardous areas.
Benefits
Clever simplicity:
One controller for all parameters and applications, intuitive user interface, automatic sensor recognition, hot plug & play with pre-calibrated Memosens sensors.High flexibility:
Universal modules for all parameters minimize spare part stock and allow for easy extension to up to 8 channels at any time.Seamless system integration:
Unique portfolio of communication standards suits every distributed control system (DCS).Simple and safe commissioning:
Saving configuration on SD card enables fast set-up on duplicate installations.Process control from a distance:
Integrated web server that allows the operator to remotely view diagnostic data, perform configurations, or access device parameters in any web browser - even via Smartphone.Higher availability, lower costs:
Heartbeat Technology enables status-oriented maintenance and easy verification of the entire measuring point and helps to carry out optimization measures.
Videos
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
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
Variable |
Predecessor
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Operating Instruction (BA)
Liquiline CM442/CM444/CM448 - Manuel de mise en service
French version - 03/2013
Contrôleur multivoie 4 fils universel Maintenance & Diagnostic
EN 25/03/201301/08/201215/12/201115/12/201001/04/2010Language:
French
Version:
25/03/2013
File size:
1.7 MB
File name:
BA00445CFR_1613.pdf
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Technical Information (TI)
Liquiline CM442/CM444/CM448
French version - 05/2020
Transmetteur multiparamètre avec au maximum huit voies de mesure, basé sur la technologie numérique Memosens
EN 10/08/202204/07/202203/05/202211/05/202028/02/2019Language:
French
Version:
11/05/2020
File size:
6.8 MB
File name:
TI00444CFR_2319.pdf
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Technical Information (TI)
Liquiline CM442/CM444/CM448
Multiparameter transmitter with a maximum of eight measuring channels based on digital Memosens technology
EN 10/08/202204/07/202203/05/202211/05/202028/02/2019Language:
English
Version:
10/08/2022
File size:
5.9 MB
File name:
TI00444CEN_2622-00.pdf
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Operating Instruction (BA)
Operating Instructions CM44x
Maintenance and diagnostics
EN 01/08/201215/12/201115/12/201001/04/2010Language:
English
Version:
01/08/2012
File size:
2.5 MB
File name:
BA00445CEN_1512.pdf
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Operating Instruction (BA)
Instrukcja obsługi do przetwornika Liquiline M CM44x. Część 4/4: Kalibracja
Uniwersalny czteroprzewodowy przetwornik wielokanałowy w technologii Memosens, wersja 16.13
Language:
Polish
Version:
26/06/2013
File size:
1.3 MB
File name:
BA00451CPL_1613.pdf
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Operating Instruction (BA)
Memosens
Sensor inputs with Memosens protocol
EN 30/05/202228/02/2019Language:
English
Version:
30/05/2022
File size:
3.3 MB
File name:
BA01245CEN_0822-00.pdf
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Operating Instruction (BA)
Operating Instructions
Communication via the HART protocol
EN 27/06/201315/09/2011Language:
English
Version:
27/06/2013
File size:
1.9 MB
File name:
BA00486CEN_0213.pdf
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Operating Instruction (BA)
Operating Instructions CM44x
Operation and settings
EN 25/03/201301/08/201215/12/201115/12/201001/04/2010Language:
English
Version:
25/03/2013
File size:
6.4 MB
File name:
BA00450CEN_1613.pdf
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Operating Instruction (BA)
Liquiline CM442/CM444/CM448
Universal four-wire multichannel controller Field device
EN 10/08/202204/07/202208/10/202106/05/202127/01/2020Language:
English
Version:
10/08/2022
File size:
8.8 MB
File name:
BA00444CEN_3022-00.pdf
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Short Instruction (KA)
Liquiline CM442/CM444/CM448
Universal four-wire multichannel controller
EN 12/08/202208/10/202106/05/202130/11/201930/05/2018Language:
English
Version:
12/08/2022
File size:
3.4 MB
File name:
KA01159CEN_0922-00.pdf
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Installation Instructions (EA)
SD card kit
32 GB, industrial flash drive
EN 23/03/2021Language:
English
Version:
23/03/2021
File size:
506.7 KB
File name:
EA01354CEN_0121.pdf
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Installation Instructions (EA)
Kit Mastbefestigung Post mounting kit 71096920 Installation Instructions
Kit Mastbefestigung
EN 28/02/201711/06/201431/12/2011Language:
English
Version:
28/02/2017
File size:
659.1 KB
File name:
EA00010CA2_0317.pdf
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