Name: Liquiline CM442R
Brand: Endress+Hauser
Availability: InStock

1-/2-channel transmitter Liquiline CM442R

Compact multiparameter DIN-rail and cabinet device for all industries

Liquiline CM442R is a state-of-the-art transmitter for pH, ORP, conductivity, oxygen and more.

An optional display enables configuration, maintenance and operation of the measuring point on-site.

Liquiline CM442R is a state-of-the-art transmitter for pH, ORP, conductivity, oxygen, chlorine, turbidity, sludge level, SAC, nitrate and many other parameters.

An optional display enables configuration, maintenance and operation of the measuring point on-site.

Liquiline transmitters with Heartbeat Technology offer status-oriented maintenance and easy verification of the measuring point and help you to carry out optimization measures.

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.

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1-/2-channel transmitter Liquiline CM442R

Compact multiparameter DIN-rail and cabinet device for all industries

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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.
Drive connectivity: Liquiline Edge Module CYY7 transfers process data to Netilion, independently of the fieldbus. This allows remote overview and the use of IIoT services. It’s available in new products or as upgrade to installed Liquiline platforms.

Integrated technologies

Services and resources

Product Support Product documentation, troubleshooting articles, device details and more.

FLEXible answers to individual needs

Current product

1-/2-channel transmitter Liquiline CM442R

High-end products
Highly functional and convenient

What is FLEX?

FLEX selections

Technical excellence

Simplicity

Fundamental selection Meet your basic measurement needs

Lean selection Handle your core processes easily

Extended selection Optimize your processes with innovative technologies

Xpert selection Master your most challenging applications

Variable

Learn more about the FLEX selections

Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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24/7 customer portal

Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

Technology

Memosens 2.0: Cutting-edge sensor technology reloaded

Make life easier, increase process safety and stay connected with Memosens 2.0 digital technology.

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Technology

Smart instrumentation through Heartbeat Technology

You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.

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Technology

Liquiline: cutting-edge transmitter platform

By choosing the Liquiline platform, you’re effectively choosing to spend less money on stock holding, save installation time and gain operational safety!

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Have questions about this product?

Selection of compatible products

RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

Spare parts and accessories

further parts

Kit: basic module BASE-L

further parts

Order code 71100607

Drawing number 7

further parts

Kit: basic module BASE2-L

further parts

Order code 71431300

Drawing number 7

further parts

Kit CM442: basic module BASE-H

further parts

Order code 71100611

Drawing number 7

further parts

Kit CM442: base module BASE2-H

further parts

Order code 71431301

Drawing number 7

Spare parts & accessories

Firmware for Liquiline 4-wire devices

Click here to download the latest firmware version of the Liquiline platform

More information

Choose from our suggested options

Looking for more options?

Use the extended configuration to configure from all available options.

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Looking for more options? Use extended configuration

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Configuration details

Liquiline CM442R is a compact DIN-Rail transmitter for pH, ORP, conductivity, oxygen, turbidity ...

DIN-rail transmitter for digital sensors

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CAD Drawings

Configuration support

Spare parts and accessories

further parts

Kit: basic module BASE-L

further parts

Order code 71100607

Drawing number 7

further parts

Kit: basic module BASE2-L

further parts

Order code 71431300

Drawing number 7

further parts

Kit CM442: basic module BASE-H

further parts

Order code 71100611

Drawing number 7

further parts

Kit CM442: base module BASE2-H

further parts

Order code 71431301

Drawing number 7

Spare parts & accessories

Selection of compatible products

RN42 active barrier

Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex

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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Potentiometric
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Sensor ORP / Redox
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Conductive
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Amperometric oxygen measurement
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Total chlorine
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Single beam scattered light
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus
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	Transmitter: IP20 Optional Display: IP66
Measuring principle	Ultrasonic sensor
Application	Modular 4 wire controller Multichannel: 1/2 digital channels for Memosens protocol Multiparameter: pH, redox, ISFET, conductivity inductive and conductive, dissolved oxygen, nitrate and turbidity Two sensors connectable in any combination Functionality modular extendable at any time Plug and play for modules and sensors
Characteristic	Robust plastic housing All non-ex applications
Design	2x Memosens input, 2 to 4x current output, alarmrelay 2x relay, SD card for software update and copy & paste of setup
Material	DIN rail housing: PC-FR Display seal: EPDM
Dimension	99 x 100 x 97 mm 3.9 x 3.94 x 3.82 inch
Process temperature	0 to 60 °C (32 to 140 °F)
Certificates, declarations and approvals	EAC, cCSAus

1-/2-channel transmitter Liquiline CM442R

1-/2-channel transmitter Liquiline CM442R

1-/2-channel transmitter Liquiline CM442R

Product information

Selection of compatible products

Spare parts and accessories

Related content

Firmware for Liquiline 4-wire devices

Choose from our suggested options

Spare parts and accessories

Selection of compatible products

My Endress+Hauser

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1-/2-channel transmitter Liquiline CM442R

1-/2-channel transmitter Liquiline CM442R

1-/2-channel transmitter Liquiline CM442R

Product information

Selection of compatible products

Spare parts and accessories

Related content

Firmware for Liquiline 4-wire devices

Choose from our suggested options

Spare parts and accessories

Selection of compatible products

Products & Services

Industries

Support

Company

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