Bently Nevada 1800/20-12-90-02-00 Seismic Vibration Transmitter

Bently Nevada 1800/20-12-90-02-00 Seismic Vibration Transmitter

Configured for seismic vibration measurement in Bently Nevada 1800 Series machinery monitoring systems, the Bently Nevada 1800/20-12-90-02-00 (1800/20 Seismic Vibration Transmitter) provides direct physical signal acquisition and 4-20 mA output processing for absolute bearing vibration monitoring.

Hardware Specifications

Rotor Dynamics and Seismic Vibration Signal Processing

The Bently Nevada 1800/20-12-90-02-00 Seismic Vibration Transmitter measures absolute bearing vibration through velocity sensing technology. The transmitter converts mechanical vibration response from the machine housing into a proportional 4-20 mA output signal for connection to PLC and DCS monitoring systems.

The module supports rotor dynamics analysis by providing continuous vibration measurement data from rotating equipment structures. The signal processing path is configured for machinery condition monitoring applications involving pumps, motors, compressors, and similar rotating assets.

The transmitter installation requires correct mechanical coupling between the sensor housing and monitored equipment. Proper mounting surface preparation, cable routing, and grounding practices are required to maintain vibration signal integrity.

Frequently Asked Questions (FAQ)

Q: What vibration parameter does the 1800/20-12-90-02-00 measure?
A: The transmitter measures absolute bearing vibration using velocity sensing technology.

Q: What output signal is provided for control system integration?
A: The unit provides a 4-20 mA analog output suitable for PLC and DCS integration.

Q: Where is the transmitter installed during operation?
A: The transmitter is installed directly on the machinery housing for seismic vibration measurement.

Field Installation Guidelines

Install the transmitter on a clean, rigid machinery mounting surface to maintain direct mechanical vibration transfer. Ensure the mounting location represents the monitored bearing or machine housing vibration condition.

Route signal cables away from high-current conductors, variable frequency drive cables, and electromagnetic interference sources. Secure cables to prevent mechanical movement and connector stress.

Verify mounting integrity, loop wiring polarity, output scaling, and PLC/DCS input configuration before commissioning the vibration monitoring channel.