Endress+Hauser's Liquiline CM442 is a
four-wire, two-parameter transmitter for analytical sensing applications. The
Liquiline transmitter accepts data from two sensors and measures any combination of various
parameters including but not limited to turbidity/suspended solids, nitrate,
SAC (UV254), ISE, dissolved oxygen, pH/ORP, chlorine, concentration and
Instead of using two
single-parameter transmitters to measure two process variables, users can
employ 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 sensor
recognition. Users can quickly and easily remove and replace each sensor for
calibration, diagnostic and other purposes.
For example, if data
from any sensor is questionable, it can be replaced with a pre-calibrated
sensor. The questionable unit can then be recalibrated and tested in an
environmentally controlled location such as a laboratory. Data stored in each
Memosens sensor is automatically recognized via the Liquiline hot plug-and-play
feature, and simple rapid mechanical installation is provided via an optional M12
interface link between the Liquiline transmitter and each Memosens sensor allows
high-speed two-way communication of various parameters including measured
variable, calibration data, sensor diagnostic data and sensor recognition data.
The Liquiline is
powered by 100-230V ac 50/60 Hz, 24V ac 50/60 Hz, or 24V dc. It conforms to Type
4X (IP66/IP67) and is NRTL certified for conformance to UL standard 61010-1 for
installation in appropriate environments. It also has a single alarm output,
two 4-20mA analog outputs, and a backlit display. Liquiline transmitters can be
upgraded to include features such as additional sensors and outputs-or communication
options including Profibus, Foundation Fieldbus or Ethernet.
An SD card is
provided to transfer setup and other data from one Liquiline transmitter to
another. This feature allows quick transmitter change out in the event of a
problem, and allows multiple Liquiline transmitters to manually share
programming data from a master transmitter. In addition, the SD card provides a
convenient means to store and transfer data collected by the transmitter to a
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