The CMCP535 Displacement Transmitter is compatible with 145mV/In/Sec Piezo Electronic (Accelerometer w/Velocity Output). The CMCP535 provides constant current power (if required), checks for faults, processes the vibration signal to determine overall amplitude, and outputs a 4-20 mA dc current that is proportional to a user selected range of 5, 10, 15, 20 or 25 mils (metric equivalent of 127, 254, 381 508 or 635 microns). Combining transmitters with an existing PLC or DCS system results in a high density, low cost vibration monitoring system.

Buffered Output:

A BNC connector mounted on the front of the unit provides access to the buffered transducer output signal. This includes both the unfiltered vibration signal, and the DC bias voltage. Portable test equipment or analyzers can be connected to this output without disturbing other system outputs.

Fault Detection:

On board fault detection circuitry continuously monitors the transducer for normal operation. If a fault occurs, the output current is reduced to <2 mA to indicate the fault to the readout system. A green LED on the front of the unit is turned off to provide a local indication of the fault.

Filters:

For applications that require monitoring specific frequency bands, optional high-pass and low-pass filters can be specified. These filters are modular and can be installed by the factory or in the field. Each module attenuates out-of-band signals at a rate of approximately 24 dB/octave. Corner frequencies from 2 Hz to 20 kHz may be specified. Filter modules may be cascaded to form higher order filters or to create a band-pass response. Filtering does not effect the buffered transducer output.

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Electrical Specifications:
Input: Piezo Electronic or Mechanical Velocity Sensor (100 mv/in/sec)
Power: +24 Vdc @ 45 mA max. (30 mA typical).
Protection: Reverse polarity and transient protection included.
Frequency Response (wo/filters): (-3 dB) 2 Hz to 2.0 kHz.
Buffered Output: BNC Connector 0-20 kHz.
Accuracy: 0.5 % of Full Scale Range.
Output: 4-20 mA proportional to the full scale range.
Maximum Load: 600 Ohms Resistive.
Case: Isolated.
Range: English, 5, 10, 15, 20, or 25 mils or
           Metric, 125, 250, 375, 500, 625 microns.
Constant Current Diode: 4.0 mA
Fault Indication: Green LED and 4-20 mA < 2mA

Environmental Specifications:
Operating Temp.: -20°C to +80° C (-4° F to +176° F).
Storage Temp.: -55°C to +125° C (-67° F to +257° F).
Relative Humidity: 0 - 95% Non-Condensing.

Physical:
Mounting: 32 mm (G style) or 35 mm (T style) DIN Rail.
Size: Transmitter 1.0" Wide x 3.11" High x 3.95" Deep
        w/Relay Module 1.6" Wide x 3.11" High x 3.95" Deep