162VTRA(H) Loop-Powered 4-20 mA Vibration Transmitter

The 162VTRA(H) Vibration Transmitter provides a 4-20 mA output that is proportional to Velocity, which represents vibration severity. Vibration is detected using a piezo-electric crystal. The crystal's output signal represents Acceleration and is electronically converted to Velocity. The device is Loop-Powered using a 15-30 VDC power supply. A 250 ohm resistor is usually used to provide a 1-5 VDC voltage drop to the instrumentation sampling the output.

TWO-WIRE VIBRATION TRANSMITTER
Vibration level is an excellent indication of machine condition. The model 162VTR is intended for continuous monitoring where trending, alarm and/or shutdown is to be accomplished with a computer or PLC. Continuous monitoring of critical or unattended machinery is necessary for several important reasons:

• Since monitoring is continuous, faults are recognized immediately.

• By contrast with manual periodic monitoring, faults which develop during the intervals between data collection go undetected.

• Early detection usually permits continued operation until scheduled maintenance—rather than expensive shutdown and correction during the middle of a production run.

PMC/BETA, 1711 Townhurst Drive, Houston, TX 77043. Tel: 713-932-6941; Fax: 713-461-8223.