
Specs at a glance
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Input
1 to 2x Memosens digital input
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Output / communication
2 to 8x 0/4 to 20 mA current outputs
Alarmrelay, 2x relay -
Ingres 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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Technical Information (TI)
Liquiline CM442/CM444/CM448
English version - 05/2022
Multiparameter transmitter with a maximum of eight measuring channels based on digital Memosens technology
EN 03/05/202211/05/202028/02/201913/06/201830/06/2017Language:
English
Version:
03/05/2022
File size:
5.8 MB
File name:
TI00444CEN_2422-00.pdf
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Operating Instruction (BA)
Operating Instructions CM44x
English version - 03/2013
Maintenance and diagnostics
EN 25/03/201301/08/201215/12/201115/12/201001/04/2010Language:
English
Version:
25/03/2013
File size:
2.5 MB
File name:
BA00445CEN_1613.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 03/05/202211/05/202028/02/201913/06/201830/06/2017Language:
English
Version:
03/05/2022
File size:
5.8 MB
File name:
TI00444CEN_2422-00.pdf
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Operating Instruction (BA)
Operating Instructions CM44x
Maintenance and diagnostics
EN 25/03/201301/08/201215/12/201115/12/201001/04/2010Language:
English
Version:
25/03/2013
File size:
2.5 MB
File name:
BA00445CEN_1613.pdf
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Operating Instruction (BA)
Operating Instructions
Universal four-wire multichannel controller
EN 15/12/201115/12/2010Language:
English
Version:
15/12/2011
File size:
1.1 MB
File name:
BA00451CEN_1411.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 CM44x/CM44xR
Operation and settings
EN 26/06/201325/03/201301/08/201215/12/201115/12/2010Language:
English
Version:
26/06/2013
File size:
6.8 MB
File name:
BA00450CEN_1713.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)
Liquiline CM442/CM444/CM448
Universal four-wire multichannel controller Field device
EN 04/07/202208/10/202106/05/202127/01/202028/02/2019Language:
English
Version:
04/07/2022
File size:
8.7 MB
File name:
BA00444CEN_2922-00.pdf
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Short Instruction (KA)
Liquiline CM442/CM444/CM448
Universal four-wire multichannel controller
EN 08/10/202106/05/202130/11/201930/05/201830/06/2017Language:
English
Version:
08/10/2021
File size:
3.3 MB
File name:
KA01159CEN_0821.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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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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Kit: basic module BASE-L
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further parts
Drawing numberOrder code771100607 -
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Kit: basic module BASE2-L
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further parts
Drawing numberOrder code771431300 -
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Kit CM442: basic module BASE-H
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further parts
Drawing numberOrder code771100611 -
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Kit CM442: base module BASE2-H
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further parts
Drawing numberOrder code771431301 -
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Kit : module AOR
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further parts
Drawing numberOrder code1471111053 -
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Kit: module 2R
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further parts
Drawing numberOrder code1471125375 -
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Kit: module 4R
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further parts
Drawing numberOrder code1471125376 -
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Kit: module 2AO
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further parts
Drawing numberOrder code1471135632 -
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Kit: module 485
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further parts
Drawing numberOrder code1471135634 -
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Kit: module 2AI
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further parts
Drawing numberOrder code1471135639 -
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Kit: module DIO
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further parts
Drawing numberOrder code1471135638 -
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Kit: module ETH
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further parts
Drawing numberOrder code1471272410 -
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Kit CM44x: Cover complete with display
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further parts
Drawing numberOrder code971104106 -
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Kit CM44x:Cover with knob, no display
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further parts
Drawing numberOrder code971269458 -
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Kit: display cable
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further parts
Order code71101762 -
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Kit: power distribution terminals
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further parts
Drawing numberOrder code571101461 -
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Kit: field housing lower part plastic
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further parts
Drawing numberOrder code271101734 -
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Kit: Mounting plate
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further parts
Drawing numberOrder code171101763 -
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Kit: mechanical inner housing parts
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further parts
Drawing numberOrder code10,1271101765 -
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Kit: set cable glands M complete
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further parts
Drawing numberOrder code1571101768 -
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Kit: Set cable glands NPT complete
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further parts
Drawing numberOrder code1571101770 -
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Kit: Set cable glands G complete
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further parts
Drawing numberOrder code1571101771 -
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Spare RFID TAG
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further parts
Order codeXPRFID- -
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Kit: 6x closing plugs for cable entry
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further parts
Order code71104942 -
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Kit: 1x set of terminals basic module
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further parts
Order code71107452 -
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Kit: 1x set of terminals module AOR
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further parts
Order code71107453 -
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Kit: 1x set of terminals module 4R
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further parts
Order code71155581 -
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Kit: 1x set of terminals module 2xAI,485
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further parts
Order code71155583 -
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Kit: 1x set of terminals module DIO
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further parts
Order code71219784 -
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Kit: Set wiring stickers CM44x modules
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further parts
Order code71184490 -
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Kit: Set 10x hinges for housingcover
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further parts
Order code71107454 -
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Kit: set 5end and blind cover
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further parts
Drawing numberOrder code6,1371107455 -
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Kit: M12 external jack f. digital sensor
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further parts
Drawing numberOrder code1671107456 -
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Kit M12 ext.jack ProfibusDP/Modbus RS485
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further parts
Order code71140892 -
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Kit: M12 external jack for Ethernet
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further parts
Order code71140893 -
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Marking Tagging (Attention: select option and enter text in 995)
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further parts
Order codeDIENST-F -
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Upgrade Kit: Modul 485 + Profibus DP
Drawing numberOrder code1471140888 -
Upgrade Kit: Modul 485 + Modbus RS485
Drawing numberOrder code1471140889 -
Upgrade Kit: Modul ETH + Modbus TCP
Drawing numberOrder code1471279809 -
Upgrade Kit: Modul ETH + EtherNet/IP
Drawing numberOrder code1471279812 -
Upgrade code: HART
Order code71128428 -
Upgradecode: 2 digital sensor inputs
Order code71114663 -
Upgrade code: Profibus DP module 485
Order code71135635 -
Upgrade code: Modbus RS 485 module 485
Order code71135636 -
Upgrade code: Modbus TCP f.module 485
Order code71135637 -
Upgrade code Modbus TCP f.module ETH
Order code