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01Temperature MeasurementTemperature measurement uses temperature sensors, thermocouples, RTDs and other instruments to accurately detect and monitor process temperatures. 02Level MeasurementLevel measurement uses ultrasonic level meters, radar level meters, and other instruments to detect and monitor the level or height of materials in tanks, vessels, and process equipment. 03Pressure MeasurementPressure measurement uses pressure transmitters, differential pressure transmitters, and other instruments to detect and monitor pressure and pressure changes in pipelines, tanks, and process equipment. 04Flow measurementFlow measurement uses electromagnetic, ultrasonic, vortex, and mass flow meters to detect and monitor the flow of liquids, gases, or steam in pipelines. 05DCSYokogawa DCS cards are core modules of a distributed control system, used to acquire field signals such as temperature, pressure, and flow, while providing control, output, and communication functions. 06Water Quality AnalysisWater quality analysis uses water quality analyzers and online monitoring instruments to detect and monitor key parameters such as pH, dissolved oxygen, turbidity, conductivity, and residual chlorine in water. 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MODELE+H FMU30 Non-Contact Ultrasonic Level TransmitterThe Prosonic FMU30 Non-Contact Ultrasonic Level Transmitter provides highly accurate, maintenance-free continuous level and open-channel flow measurement for liquids, pastes, and coarse bulk solids across municipal and industrial applications. Featuring an integrated temperature sensor for automatic sound velocity compensation, a user-friendly 4-line plain text display with 32-point linearization, and a rugged IP68-rated weatherproof enclosure, this compact 2-wire transmitter delivers dependable real-time tank monitoring, pump control, and overflow protection in sewage treatment plants, process water storage, and chemical buffer tanks. MODELE+H Deltabar PMD55B High Precision Smart Differential Pressure TransmitterThe PMD55B High Precision Smart Differential Pressure Transmitter delivers exceptionally accurate differential pressure, flow, and hydrostatic level measurements for industrial liquids, gases, and steam. Featuring a robust metallic diaphragm, ultra-low long-term drift, optional wireless Bluetooth operation, and SIL2/3 functional safety certifications, this versatile instrument provides stable, error-free process monitoring across harsh chemical, oil, and water treatment environments. MODELE+H Waterpilot FMX11 Submersible Hydrostatic Level TransmitterThe Waterpilot FMX11 is a high-precision, heavy-duty submersible hydrostatic level transmitter engineered for continuous liquid level and depth monitoring in fresh water, groundwater wells, drinking water reservoirs, and surface water bodies. Featuring an ultra-compact 22mm stainless steel 316L housing, an integrated atmospheric pressure compensation tube with a protective Teflon filter, and international drinking water certifications, this compact dip cell sensor delivers exceptional long-term stability and precise 4–20 mA signal output even in narrow 1-inch pipes and demanding environmental conditions. MODELChongqing Chuanyi WZGPK-73DH-GB/1P2-AJ150G-M20XC6-AXX-I5/2AM20 Explosion-proof RTDThe WZGPK is a heavy-duty explosion-proof armored Pt100 RTD temperature sensor engineered for accurate thermal monitoring in hazardous industrial environments. Equipped with a high-precision Class A platinum sensing element, a 3-wire connection, a 6mm diameter sheath made of durable 321 stainless steel, and a 150mm insertion length, this flameproof sensor delivers exceptionally fast thermal response, vibration resistance, and long-term stability across a wide temperature range from -200°C to 600°C. Designed with an M20x1.5 process thread and an explosion-proof junction box, it provides reliable flameproof protection and continuous signal accuracy for chemical plants, oil refineries, and automated process control systems. MODELYokogawa ADV151-P50/D5A00 Digital Input Module ExstockEngineered for reliable industrial automation, the Yokogawa ADV151-P50/D5A00 Digital Input Module provides high-density 32-channel, 24 V DC isolated signal processing alongside dedicated connection adapters, ensuring optimal signal integrity, robust noise immunity, and seamless integration into distributed control systems (DCS). MODELYokogawa AAI143-H50 Analog Input Module ExstockThe Yokogawa AAI143-H50 is a high-performance 16-channel isolated analog input module designed for process automation systems, capable of handling 4 to 20 mA standard signal inputs with exceptional stability and accuracy. Supplied with its matching terminal block adapter, this module offers seamless integration, superior noise immunity, and reliable data acquisition for demanding industrial environments. MODELYokogawa S2CP471-01 Controller Module Spare Part ExstockThe Yokogawa S2CP471-01 Controller Module Spare Part provides reliable, real-time control performance and high-speed VNET/IP communication connectivity to optimize your industrial DCS automation system with seamless integration and reduced operational downtime. SOLUTIONSmart water network monitoringCombine verified flow and pressure data for distribution monitoring and operational review. SOLUTIONHydrogen pressure measurementReview materials, pressure range and safety requirements for hydrogen process measurement. SOLUTIONProcess measurement selectionStart from the medium, operating window, installation and required signal before selecting an instrument.

Product Overview

E+H Liquiline CM42B 2-Wire Transmitter

Liquiline CM42B 2-Wire Transmitter

The Endress+Hauser Liquiline CM42B is a robust, loop-powered 2-wire transmitter designed for continuous liquid analysis measuring pH/ORP, conductivity, and dissolved oxygen in demanding process environments. Equipped with digital Memosens technology and flexible housing options, it offers highly accurate parameter monitoring across chemical, pharmaceutical, and water treatment applications.

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Endress+Hauser Liquiline CM42B 2-Wire Liquid Analysis Transmitter

Reliable Liquid Analysis for Demanding Process Environments

The Endress+Hauser Liquiline CM42B 2-wire transmitter is a top-tier liquid analysis device engineered to satisfy the rigorous monitoring requirements of global process industries. Built to handle continuous liquid measurement tasks—including pH, ORP, conductive and inductive conductivity, as well as amperometric or optical dissolved oxygen—the CM42B transmitter ensures maximum operational uptime, stringent safety compliance, and reliable process control in harsh environment conditions.

Versatile Modular Design and Enclosure Options

Designed with modular versatility at its core, the Liquiline CM42B transmitter accommodates diverse field mounting setups and harsh industrial environments. Plant engineers can select high-grade polycarbonate enclosures for chemical applications, polished hygienic stainless steel housings for life sciences and food production facilities, or compact DIN-rail units intended for control cabinet skids. Its loop-powered 2-wire setup significantly simplifies field wiring while delivering continuous 4 to 20 mA signals, with optional secondary outputs and HART communication capabilities for full integration into modern Distributed Control Systems (DCS) and asset management software.

Cutting-Edge Memosens Digital Sensor Technology

A fundamental strength of the Liquiline CM42B lies in its seamless support for Memosens 2.0 digital sensor technology. Memosens non-contact inductive signal connection completely eliminates problems caused by moisture, corrosion, and environmental contamination at the sensor head. Because calibration data and process history are stored directly inside the smart Memosens sensor head, technicians can calibrate sensors safely in lab environments prior to field installation. When a sensor is connected, the CM42B automatically recognizes the sensor type and parameter configuration, reducing commissioning time to a matter of seconds.

Enhanced Safety and Wireless Connectivity

Safety and usability are further elevated through smart connectivity options and international certifications. The CM42B transmitter holds worldwide hazardous area approvals (Ex ia), making it suitable for intrinsically safe installations in Zone 0 and Zone 1 explosive atmospheres. Users can interact with the instrument directly using the high-contrast display module or configure process parameters remotely via password-protected Bluetooth LE wireless connectivity using smartphones or tablets with the SmartBlue app.

Application

  • Chemical & Petrochemical Processes: Monitoring pH, ORP, and inductive conductivity in corrosive or hazardous process fluids and reactors.

  • Pharmaceutical & Life Sciences: Ultra-pure water (WFI) conductivity monitoring and bioreactor pH/dissolved oxygen control under strict hygienic standards.

  • Water & Wastewater Treatment: Continuous quality monitoring of effluent discharge, drinking water purification, and aeration basin oxygen control.

  • Food & Beverage Production: Hygienic line monitoring during CIP/SIP clean-in-place sequences and product filling lines.

Technical Parameters

  • Device Type: Modular 1-channel, 2-wire loop-powered analytical transmitter

  • Compatible Parameters: pH, ORP, Conductive Conductivity, Inductive Conductivity, Amperometric Dissolved Oxygen, Optical Dissolved Oxygen

  • Sensor Interface: Memosens digital protocol or analog sensor input

  • Signal Output / Communication: Current output 1: 4 to 20 mA (passive, HART optional); Current output 2 (optional): 4 to 20 mA (passive)

  • Housing Options: High-grade Polycarbonate (IP66/67, NEMA 4X), Stainless Steel 316L (IP66/67, NEMA 4X), or DIN-rail (IP20)

  • Power Supply: Loop-powered via 4 to 20 mA loop (17 V DC to 30 V DC)

  • Ambient Temperature Range: -20 °C to +60 °C (-4 °F to +140 °F) depending on Ex classification and housing

  • Explosion Protection / Certificates: ATEX, IECEx, C/US, CHN-Ex (Intrinsically Safe Ex ia)

FAQ

  • Q: What liquid analysis parameters can the Liquiline CM42B measure? A: The transmitter measures pH, ORP, conductive conductivity, inductive conductivity, amperometric oxygen, and optical dissolved oxygen using compatible sensors.

  • Q: What are the main benefits of using Memosens digital sensors with the CM42B? A: Memosens sensors provide non-contact inductive signal transfer immune to moisture, allow off-site lab calibration, and feature auto-recognition upon connection to the CM42B.

  • Q: Can the CM42B transmitter be installed in hazardous area environments? A: Yes, the CM42B holds intrinsically safe Ex approvals including ATEX, IECEx, and C/US for Zone 0 and Zone 1 hazardous area applications.

  • Q: Do you supply original Endress+Hauser transmitters with factory documentation? A: Yes, as an international instrument distributor, we supply original Endress+Hauser Liquiline CM42B units complete with manufacturer certificates and technical documentation upon request.

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