
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 -
Ingres protection
Transmitter: IP20
Optional Display: IP66
Field of application
Liquiline CM442R allows you to connect up to 2 Memosens sensors of your choice from over 12 measurement parameters. With its extremely compact design, it fits into any cabinet - and even offers inputs, outputs, controllers, and math modules, e.g. for cleaning control. The transmitter belongs to the Liquiline platform with standardized system integration, operation, and spare parts. Heartbeat Technology helps you find the ideal balance between measurement point availability and maintenance costs.
Liquiline CM442R 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
Saves space, saves money:
Extremely small footprint, saves space in cabinets – perfect for skids.High-speed installation:
No cut-out in cabinet door, one-click DIN-rail mounting, minimized wiring.Simple and safe commissioning:
Saving configuration on SD card enables fast set-up on duplicate installations.Easy to operate and service:
Intuitive user interface, hot plug & play with pre-calibrated Memosens sensors, universal components fit all parameters.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 |
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Technical Information (TI)
Liquiline CM442R/CM444R/CM448R
Cabinet controller with a maximum of eightmeasuring 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:
6.7 MB
File name:
TI01112CEN_1022-00.pdf
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Operating Instruction (BA)
Liquiline CM442R/CM444R/CM448R
Universal four-wire multichannel controller Cabinet installation
EN 08/10/202120/04/202127/01/202028/02/201930/05/2018Language:
English
Version:
08/10/2021
File size:
11.1 MB
File name:
BA01225CEN_1521.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 CM442R/444R/448R
Maintenance & Diagnosis
EN 27/06/2013Language:
English
Version:
27/06/2013
File size:
2.4 MB
File name:
BA01227CEN_0113.pdf
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Short Instruction (KA)
Liquiline CM442R/CM444R/CM448R
Universal four-wire multichannel controller for cabinet installation
EN 08/10/202120/04/202130/11/201930/05/201830/06/2017Language:
English
Version:
08/10/2021
File size:
3.6 MB
File name:
KA01160CEN_0921.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)
Installation Instructions Kit CM44xR
External Display
EN 27/06/2013Language:
English
Version:
27/06/2013
File size:
1.1 MB
File name:
EA01080CA2_0113.pdf
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Installation Instructions (EA)
Installation Instructions Liquiline CM44xR
Service display for rail mounted device
EN 06/03/2014Language:
English
Version:
06/03/2014
File size:
138.3 KB
File name:
EA01100CA2_0113.pdf
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Installation Instructions (EA)
SD card kit
Industrial flash drive, 1 GB With firmware, no. 71127100 Without firmware, no. 71110815
EN 23/03/202109/10/202020/03/201725/06/201401/07/2012Language:
English
Version:
23/03/2021
File size:
506.9 KB
File name:
EA00011CEN_0621.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: 1x set of terminals basic module
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further parts
Order code71107452 -
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Kit: module ETH
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further parts
Order code71272410 -
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Kit CM442R Enclosure for cabinet mount
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further parts
Order code71222273 -
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Kit CM44xR Covers for touch protection
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further parts
Order code71222282 -
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Kit: external graph.display, cabinet
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further parts
Order code71185295 -
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Kit: external graph. display, portable
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further parts
Order code71185296 -
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Kit CM44xR Servicedisplay: Cable+Grommet
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further parts
Order code71240608 -
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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 4AO
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further parts
Order code71155582 -
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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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Spare RFID TAG
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further parts
Order codeXPRFID- -
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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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Kit : module AOR
Order code71111053 -
Kit: module 2R
Order code71125375 -
Kit: module 4R
Order code71125376 -
Kit: module 2AO
Order code71135632 -
Kit: module 2AI
Order code71135639 -
Kit: module DIO
Order code71135638 -
Kit: module 485
Order code71135634 -
Upgrade Kit: Modul 485 + Profibus DP
Order code71140888 -
Upgrade Kit: Modul 485 + Modbus RS485
Order code71140889 -
Upgrade Kit: Modul ETH + Modbus TCP
Order code71279809 -
Upgrade Kit: Modul ETH + EtherNet/IP
Order code71279812 -
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: Feedforward control
Order code71211288 -
Upgrade code: Measuring Range Switch
Order code71211289 -
Upgrade code: EtherNet/IP f.module 485
Order code71219871 -
Upgrade code Modbus TCP f.module ETH
Order code71279813 -
Upgrade code EtherNet/IP f. module ETH
Order code71279830 -
Upgrade code: Chemoclean Plus
Order code71239104 -
Upgradecode Heartbeat Verifi.+Monitoring
Order code71367524 -
Upgradecode Mathematic
Order code71367541 -
Upgr.code:EtherNet/IP+Webserver BASE2
Order code71449914 -
Upgr.code Modbus TCP+Webserver BASE2
Order code71449915 -
Upgrade code: Webserver for BASE2
Order code71449918 -
Upgr.code: PROFINET+Webserver f. BASE2
Order code71449901 -
SD-Card, 1GB, Industrial Flash Drive
Order code71110815 -
SD-Card with Firmware, 1GB
Order code71127100