A Flexible Multichannel Transmitter for Liquid Analysis
The CM444R is designed for applications where several liquid-analysis parameters need to be measured and managed from a centralized control cabinet. It can connect up to four Memosens digital sensors, allowing different measurement parameters to be combined within one transmitter.
This makes the CM444R particularly suitable for larger or more complex measuring points where a single-parameter transmitter would provide limited flexibility.
Supports Multiple Measurement Parameters
The CM444R belongs to the Liquiline platform and can be configured for a broad range of liquid-analysis parameters, including pH, ORP, conductivity, oxygen, chlorine, turbidity, sludge level, SAC and nitrate. The exact measurement capability depends on the selected sensor and configuration.
This multi-parameter architecture allows one transmitter platform to support different measurement requirements across the same process installation.
Memosens Digital Sensor Technology
The transmitter uses Memosens digital sensor technology, providing a standardized interface for compatible digital sensors. Sensor data is transferred digitally, while sensor-specific information can be stored within the sensor.
The Memosens platform also makes it easier to exchange sensors and manage measurement points across different applications.
Expandable as the Measuring Point Develops
A key feature of the CM444R is its expandable architecture. Endress+Hauser states that the transmitter can be expanded with additional inputs, outputs, controllers, mathematical modules and sensor channels.
This makes the transmitter suitable for projects where measurement requirements may increase over time rather than remaining fixed from the beginning.
Designed for DIN-Rail and Cabinet Installation
The CM444R is designed specifically for DIN-rail and cabinet mounting, making it suitable for centralized control panels and process-analysis cabinets.
Its cabinet-oriented design helps keep the transmitter, signal connections and communication interfaces organized within the plant control infrastructure.
Flexible Process Integration
Depending on configuration, the CM444R provides multiple analog outputs and communication interfaces. The official product information lists 2 to 8 × 0/4–20 mA outputs, relay outputs, PROFIBUS DP, Modbus RS485, Modbus TCP and Ethernet-based communication options.
The platform also supports interfaces such as HART, EtherNet/IP, PROFINET and Webserver, depending on the selected configuration.
Heartbeat Technology for Measurement Monitoring
The CM444R can be equipped with Heartbeat Technology, providing diagnostics, verification and monitoring functions for the measuring point. This can help maintenance teams assess measurement status and identify potential issues without relying only on conventional periodic checks.
Suitable for a Wide Range of Industries
The CM444R is designed for use across multiple industries, including Food & Beverages, Life Sciences, Power & Energy, Water/Wastewater & Waste, Chemicals and Marine.
Its broad sensor compatibility makes it suitable for both individual process measurements and larger multi-parameter monitoring systems.
Optional Display for Local Operation
An optional display can be added for local configuration, maintenance and operation of the measuring point. The transmitter itself has an IP20 enclosure rating, while the optional display provides IP66 protection.
Hazardous-Area Sensor Integration
Depending on the selected module and configuration, the CM444R platform can support connection to sensors installed in hazardous areas, with approvals such as IECEx, ATEX and CSA available for applicable configurations.
Key Features
4-channel multiparameter transmitter
Designed for DIN-rail and cabinet mounting
Supports 1 to 4 Memosens digital sensors
Suitable for pH, ORP, conductivity, oxygen, chlorine, turbidity and other parameters
Expandable input and output architecture
2 to 8 × 0/4–20 mA current outputs depending on configuration
Relay outputs available
HART, PROFIBUS DP and Modbus communication options
Modbus TCP and Ethernet-based communication
EtherNet/IP and PROFINET available depending on configuration
Optional local display
Heartbeat Technology for diagnostics, verification and monitoring
Webserver functionality available
Suitable for a wide range of industrial applications
Hazardous-area sensor connection options available depending on configuration
Typical Applications
Water and Wastewater Treatment
The CM444R can centralize measurements such as pH, conductivity, dissolved oxygen, turbidity and other parameters used throughout water and wastewater treatment processes.
Chemical Processing
Its broad sensor compatibility makes it suitable for monitoring chemical processes where multiple liquid parameters need to be measured from a centralized control cabinet.
Food and Beverage Processing
The transmitter can be integrated with compatible Memosens sensors for monitoring process and utility water, cleaning processes and other liquid-analysis applications in food and beverage plants.
Life Sciences
The CM444R can be used as part of centralized liquid-analysis systems in life-science applications where multiple measurement parameters need to be integrated into plant control systems.
Power and Energy
The transmitter is suitable for liquid-analysis measurements in power and energy facilities, including monitoring of process and utility water.
Multi-Parameter Process Monitoring
Where several sensors are installed around the same process area, the CM444R provides a common transmitter platform for combining measurements and integrating them with the plant control system.
Cabinet-Based Process Analysis
The DIN-rail and cabinet-mounted design makes the CM444R suitable for centralized instrumentation cabinets where space, wiring organization and communication integration are important considerations.
FAQ
What is the Endress+Hauser Liquiline CM444R?
The CM444R is a four-channel multiparameter transmitter for liquid analysis. It is designed to connect Memosens digital sensors and integrate their measurements into industrial control and monitoring systems.
How many sensors can the CM444R connect?
The CM444R supports 1 to 4 Memosens digital inputs, allowing up to four compatible digital sensors to be connected depending on the configuration.
What parameters can the CM444R measure?
Depending on the connected sensor and configuration, the CM444R can support parameters including pH, ORP, conductivity, dissolved oxygen, chlorine, turbidity, sludge level, SAC and nitrate.
Is the CM444R a sensor?
No. The CM444R is a transmitter/controller. The actual measurement is performed by compatible Memosens sensors connected to the transmitter.
Can the CM444R be installed on a DIN rail?
Yes. The CM444R is specifically designed for DIN-rail and cabinet installation, making it suitable for centralized process-analysis cabinets.
Is the CM444R expandable?
Yes. One of the main characteristics of the CM444R is its expandable architecture. Additional inputs, outputs, controllers, mathematical modules and sensor channels can be added according to the selected configuration.
Does the CM444R support Memosens sensors?
Yes. The CM444R is based on digital Memosens technology and provides between one and four Memosens digital inputs depending on configuration.
Does the CM444R have analog outputs?
Yes. Depending on configuration, the CM444R provides 2 to 8 × 0/4–20 mA current outputs.
What communication protocols are available?
Depending on the configuration, the CM444R supports interfaces and protocols including HART, PROFIBUS DP, Modbus RS485, Modbus TCP, EtherNet/IP, PROFINET and Webserver.
Does the CM444R have a display?
A display is available as an option. The optional display can be used for local configuration, maintenance and operation of the measuring point.
Can the CM444R be used with hazardous-area sensors?
Yes, selected configurations and modules provide hazardous-area sensor connection options with approvals such as IECEx, ATEX and CSA. The exact approval depends on the selected configuration.
What is the difference between CM444R and CM14?
The CM14 is a compact one-channel panel transmitter intended for standard measuring points, while the CM444R is a four-channel, expandable multiparameter transmitter designed for more complex cabinet and DIN-rail installations. The CM444R therefore provides substantially more sensor channels, outputs, communication options and expansion capability.
