E+H Liquiline M CM42 Ex-Approved Liquid Analysis Transmitter

The CM42 Series Ex-Approved Liquid Analysis Transmitter is an advanced, high-precision industrial field instrument designed for continuous liquid analytical monitoring in process industries. Specially engineered for hazardous locations, this transmitter processes critical liquid parameters including pH, ORP, Conductivity, and Dissolved Oxygen with uncompromised safety and accuracy.

Utilizing cutting-edge Memosens® digital sensor technology, calibration data is stored directly inside the sensor head rather than the transmitter. This allows maintenance teams to pre-calibrate sensors in the laboratory and execute rapid “plug-and-play” swaps in the field—reducing downtime by up to 30% and eliminating operator exposure to hazardous zones during calibration.

Continuously monitors sensor health, electrode slope, zero point, and response times. Early warning indicators alert operators before sensor failure occurs, preventing unexpected process shutdowns.

Seamlessly integrates into modern Distributed Control Systems (DCS) and PLC architectures via 4-20mA HART, PROFIBUS PA, or FOUNDATION Fieldbus protocols.

Available in high-grade synthetic housing (PBT-GF) or stainless steel (316L), offering superior resistance against aggressive chemicals and harsh atmospheric corrosion.

FAQs
Q1: Can I use this transmitter with non-Memosens analog sensors?

A: Yes. While Memosens digital sensors offer optimal performance and contact-free inductive connection, optional analog input modules are available to maintain compatibility with conventional analog pH/ORP or conductivity sensors.

Q2: Do you support OEM / ODM customization for overseas distributors and system integrators?

A: Yes, as a professional automation instrumentation manufacturer in China, we offer comprehensive OEM/ODM services, including private labeling, customized firmware parameter pre-sets, custom enclosure colors, and localized packaging.

Q3: How does Memosens technology help reduce operational costs in hazardous areas?

A: Memosens stores calibration data inside the sensor head. Technicians can calibrate sensors safely in a laboratory rather than in hazardous field conditions. Field replacement takes seconds without needing re-calibration on-site, significantly saving labor costs and minimizing process downtime.

Technische Daten

Geprüfte Produktspezifikationen

Measurement Principle	ISFET Electrode
Applications	The Liquiline M CM42 is a modular two-wire transmitter suitable for use in all process applications.
Features	Rugged plastic and stainless steel housings are suitable for applications including: Chemical processes Pharmaceutical industry Food manufacturing Hazardous area applications
Measurement Principle	Connects to analog or Memosens digital sensors.
Design	Depending on the model ordered, the Liquiline M CM42 offers one or two analog current outputs, or can connect to fieldbuses (FOUNDATION Fieldbus, PROFIBUS PA, and HART).Liquiline designs in accordance with the IEC 61508 international safety standard.
Materials	Plastic or stainless steel housing with EPDM seals.
Dimensions	Plastic Housing: 144x144x159 mm Stainless Steel Housing: 174x174x145 mm
Temperature Sensor	Applicable: Pt100, Pt1000, NTC 30K
Explosion-proof Certifications	ATEX, FM, CSA, NEPSI, TIIS
Protection Rating	IP66 and IP67
Inputs	Single or dual-channel transmitter (with one reference connection)
Outputs	0/4...20 mA, HART, Profibus, FF Second output allowed

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