E+H Liquiline CM442 Multi-Parameter Liquid Analysis Transmitter

The CM442 Digital Transmitter represents the next generation of liquid analysis technology. Built on a modular platform, this multi-parameter transmitter allows industrial operators, water treatment plant integrators, and OEM equipment manufacturers to monitor critical process parameters with maximum precision and minimum downtime.

Thanks to Memosens digital technology, sensor calibration and maintenance can be performed in the laboratory under ideal conditions rather than in the field. The CM442 controller automatically recognizes connected sensors, transfers stored calibration data, and starts measurement instantly.

Designed to grow with your plant requirements, the modular internal layout allows adding measurement channels, relays, or modern fieldbus communication modules (such as Modbus RS485/TCP, Profibus DP, or Ethernet/IP) at any time.

With built-in HART communication and optional web server functionality, process engineers can remotely view diagnostic data, adjust configurations, and monitor water quality parameters directly via standard web browsers or smartphone interfaces.

FAQ
Q1: What digital sensors are compatible with the CM442 transmitter?
A: The controller is natively compatible with all digital Memosens sensors, including Memosens pH/ORP electrodes (e.g., CPS11D), inductive/conductive conductivity sensors (e.g., CLS50D/CLS82D), optical dissolved oxygen sensors (e.g., COS61D), and turbidity sensors (e.g., CUS51D).

Q2: Can I upgrade this unit to support more sensor channels or different fieldbus communications later?
A: Yes! The CM442 features a modular hardware architecture. You can easily install additional Memosens input modules (up to 8 channels depending on enclosure setup), PROFIBUS DP, Modbus RS485/TCP, or EtherNet/IP cards in the field without replacing the entire transmitter.

Q3: How does the Memosens plug-and-play technology benefit my facility?
A: Memosens technology stores calibration data directly inside the sensor head. This enables non-contact inductive signal transmission, eliminating corrosion and moisture interference. Maintenance technicians can pre-calibrate sensors in the lab and swap them in the field in seconds, drastically reducing operational downtime.

Q4: Do you offer international shipping and OEM/wholesale customization for system integrators?
A: Yes, as a professional automation instrumentation exporter, we supply genuine products, complete compatible accessories, pre-configuration services, and OEM solution integration for global customers with door-to-door worldwide shipping.

Technical Specifications

Reviewed product specifications

Measurement Principle	Glass electrode
Applications	Modular four-wire controller; Multi-channel: 1 to 2 digital channels for connecting Memosens sensors; Multiple parameters: pH, ORP, ISFET, inductive and conductive conductivity, dissolved oxygen, nitrate, and turbidity; Allows simultaneous connection of any two sensors; Expandable functionality at any time; Plug and play modules and sensors.
Features	Rugged and durable plastic housing; Suitable for all non-explosion-proof applications.
Design	2 Memosens inputs; 2...4 current outputs; Alarm relays; 2 relays; SD card for software upgrades, copying and pasting settings.
Material	Plastic (polycarbonate)
Dimensions	237 (9.33) x 194 (7.64) x 162 (6.38) mm (inch)
Process Temperature	-20...60°C / 0...140°F
Protection Rating	IP67
Inputs	1...2 Memosens digital inputs 2 0/4...20mA inputs (optional) 2 digital inputs (optional)
Outputs	2...4 0/4...20 mA current outputs Alarm Relays 2 Relays ProfibusDP Modbus RS485 Modbus TCP Ethernet
Other Certifications	EAC, cCSAus, MCERTS

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