Endress Hauser 1-channel transmitter Liquiline CM42B CM14 CM42 CM72 CM82
The Liquiline single-channel transmitter family from Endress+Hauser offers a comprehensive range of solutions for liquid analysis, spanning from compact fixed-configuration devices to modular, Ex-certified field instruments. Each model is designed to meet specific application and installation requirements, while sharing the core benefit of Memosens digital technology for reliable, plug-and-play sensor integration.
Key Features and Benefits
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Diverse Portfolio for Every Application: The family includes the CM42B (two-wire field or DIN-rail device for hazardous and non-hazardous areas), the CM14 (cost-effective panel-mount transmitter for food, power, water, and wastewater), the CM42 (modular two-wire transmitter for chemical, pharmaceutical, food, and hazardous areas), the CM72 (compact fixed-configuration two-wire transmitter for space-constrained installations), and the CM82 (compact two-wire transmitter with optional Bluetooth connectivity).
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Memosens Digital Technology: All models support Memosens digital sensors, enabling pre-calibrated sensors to be swapped out quickly with automatic recognition and “hot plug & play” capability. Calibration data and sensor history are stored in the sensor head, reducing process downtime and ensuring measurement reliability.
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Flexible Communication and Integration: Output and communication options vary by model. The CM42B and CM82 offer 4…20 mA with optional HART, while the CM42 supports HART, PROFIBUS PA, and FOUNDATION Fieldbus. The CM14 provides two 0/4…20 mA outputs and two relays.
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Hazardous Area Certification: The CM42B, CM42, and CM72/CM82 hold international Ex approvals (ATEX, IECEx, etc.) for use in hazardous areas, with the CM42B supporting Zone 0 applications.
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Convenient Operation: The CM42B and CM82 feature Bluetooth connectivity for remote operation via the SmartBlue app, allowing users to view measurement point information on smartphones or tablets. The CM14 features a dual-line LCD display for local readings.
Technical Specifications (at a Glance)
| Specification | CM42B | CM14 | CM42 | CM72 | CM82 |
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| Type | Two-wire field/DIN-rail | Panel-mount (48×96 mm) | Two-wire field (modular) | Compact two-wire | Compact two-wire |
| Input | 1 or 2 channels (Memosens) | 1 channel (Memosens) | 1 or 2 channels (Memosens/analog) | 1 channel (Memosens) | 1 channel (Memosens) |
| Output | 0/4…20 mA, HART, Profibus, FF | 2x 0/4…20 mA, 2x relay | 0/4…20 mA, HART, Profibus, FF | 4…20 mA | 4…20 mA, HART |
| Communication | HART, PROFIBUS, FF | — | HART, PROFIBUS PA, FF | — | HART |
| Ingress Protection | IP66/IP67 | Front IP65/NEMA 4X | IP66/IP67 | IP67/IP68/NEMA 6 | IP67/IP68/NEMA 6 |
| Dimensions | Field or DIN-rail | 48 x 96 x 152 mm | 144x144x159 mm (plastic) | Ø18.95 x 114.7 mm | Ø18.95 x 114.7 mm |
| Ex Certification | ATEX, IECEx, etc. | — | ATEX, FM, CSA, NEPSI | ATEX, IECEx, etc. | ATEX, IECEx, etc. |
| Bluetooth | Yes | No | No | No | Optional |
The Liquiline single-channel transmitter family provides reliable, application-specific solutions for liquid analysis, combining Memosens digital technology, flexible communication options, and hazardous area certifications to suit a wide range of process and environmental monitoring requirements.
Endress Hauser 1-channel transmitter Liquiline CM42B CM14 CM42 CM72 CM82
The Endress+Hauser Liquiline single-channel transmitter family is a group of digital transmitters for liquid analysis, covering a complete range of solutions from compact fixed-configuration instruments to modular Ex-certified field devices. The entire series supports Memosens digital sensor technology, ensuring reliable plug-and-play sensor integration.
Liquiline CM42B is a two-wire field device suitable for hazardous and non-hazardous areas in the chemical, life sciences, and food and beverage industries. It supports single or dual-channel transmission (with one reference connection) and can connect to either Memosens digital sensors or analog sensors, measuring parameters including pH, ORP, conductivity, and dissolved oxygen. Output options include 0/4…20 mA, HART, Profibus, and FF. It features a Bluetooth interface, allowing detailed measuring point information to be viewed on mobile devices via the SmartBlue app. The ingress protection rating is IP66/IP67, with certifications including IECEx, ATEX, C/US IS Cl. I Div. 1, and Chinese explosion protection. Housing options include stainless steel, plastic, or DIN-rail panel-mount versions.
Liquiline CM14 is a cost-effective panel-mount transmitter with a four-wire design and a 48 x 96 mm panel housing, suitable for food, power, water, and wastewater applications. It connects to Memosens digital sensors and supports pH/ORP, conductivity, and dissolved oxygen measurement. It features a two-line display, with outputs of 2 x 0/4…20 mA and 2 relays. The front protection rating is IP65 / NEMA 4X, with the body rated IP20. This model does not carry explosion protection certification and is intended for non-hazardous areas.
Liquiline CM42 is a modular two-wire transmitter usable across all process sectors, including chemical processes, the pharmaceutical industry, food manufacturing, and hazardous area applications. It supports connection to either analog or Memosens digital sensors, covering measurement principles including pH, ORP, conductivity, dissolved oxygen, and ISFET electrodes. Output options include 1 or 2 x 4…20 mA analog current outputs, or connection to HART, PROFIBUS PA, and FOUNDATION Fieldbus fieldbuses. The transmitter is designed in accordance with the IEC 61508 international safety standard and offers SIL and Ex versions. It is available in a robust plastic housing (144 x 144 x 159 mm) or stainless steel housing (174 x 174 x 145 mm), with IP66/IP67 ingress protection. Explosion protection certifications include ATEX, FM, CSA, NEPSI, and TIIS.
Liquiline CM72 is a compact two-wire transmitter designed for applications with limited installation space where multiparameter devices are not required. Its housing measures only 18.95 mm in diameter and 114.7 mm in length, constructed of PEEK material. It connects directly to Memosens digital sensors without the need for a cable. The measuring parameters and measuring range are preconfigured at the time of ordering, allowing immediate use after installation, with high safety that prevents operating errors. Measurement ranges support pH 0 to 14, ORP –1500 mV to 1500 mV, conductivity 0 to 500 mS/cm, and dissolved oxygen 0 to 20 mg/l. Output is 4…20 mA, with an ingress protection rating of IP67/IP68/NEMA Type 6, suitable for both hazardous and non-hazardous areas.
Liquiline CM82 shares the same dimensions as the CM72 (18.95 mm diameter, 114.7 mm length) and also features a compact, lightweight PEEK housing that connects directly to Memosens digital sensors. The main difference from the CM72 is that the CM82 offers optional Bluetooth connectivity, allowing users to view all nearby CM82 measuring points on a tablet or smartphone via a secure Bluetooth connection for convenient remote operation. Output signals are 4…20 mA and HART, with the same IP67/IP68/NEMA Type 6 ingress protection rating.
The transmitter family ensures non-contact digital signal transmission through Memosens digital technology, achieving optimal electrical isolation, no contact corrosion, and complete waterproofing and moisture protection—connections are even possible underwater. Pre-calibrated sensors support plug-and-play operation, reducing the process downtime required for sensor calibration.