Endress+Hauser's Liquiline CM442 is afour-wire, two-parameter transmitter for analytical sensing applications. TheLiquiline transmitter accepts data from two sensors and measures any combination of variousparameters including but not limited to turbidity/suspended solids, nitrate,SAC (UV254), ISE, dissolved oxygen, pH/ORP, chlorine, concentration andconductivity.

Instead of using twosingle-parameter transmitters to measure two process variables, users canemploy a single Liquiline. The CM442 Liquiline transmitter accepts any two Memosens sensor inputs,each with true hot plug-and-play capabilities via a digital interface link.This allows users to interchange sensors at will with immediate sensorrecognition. Users can quickly and easily remove and replace each sensor forcalibration, diagnostic and other purposes.

For example, if datafrom any sensor is questionable, it can be replaced with a pre-calibratedsensor. The questionable unit can then be recalibrated and tested in anenvironmentally controlled location such as a laboratory. Data stored in eachMemosens sensor is automatically recognized via the Liquiline hot plug-and-playfeature, and simple rapid mechanical installation is provided via an optional M12connector.

The digitalinterface link between the Liquiline transmitter and each Memosens sensor allowshigh-speed two-way communication of various parameters including measuredvariable, calibration data, sensor diagnostic data and sensor recognition data.

The Liquiline ispowered by 100-230V ac 50/60 Hz, 24V ac 50/60 Hz, or 24V dc. It conforms to Type4X (IP66/IP67) and is NRTL certified for conformance to UL standard 61010-1 forinstallation in appropriate environments. It also has a single alarm output,two 4-20mA analog outputs, and a backlit display. Liquiline transmitters can beupgraded to include features such as additional sensors and outputs-or communicationoptions including Profibus, Foundation Fieldbus or Ethernet.

An SD card isprovided to transfer setup and other data from one Liquiline transmitter toanother. This feature allows quick transmitter change out in the event of aproblem, and allows multiple Liquiline transmitters to manually shareprogramming data from a master transmitter. In addition, the SD card provides aconvenient means to store and transfer data collected by the transmitter to aPC.

Endress+Hauser's Liquiline CM442_A