Bently Nevada 1800/20-12-90-02-00 Thrust Position Transmitter Module

The Bently Nevada 1800/20-12-90-02-00 serves as the primary 1800/20 Thrust Position Transmitter utilized to execute axial shaft position monitoring across machinery protection and condition monitoring platforms. The transmitter employs non-contact eddy-current sensing technology to measure shaft axial displacement and converts the measured value into a standard process control output for integration with monitoring and control systems.

Hardware Specifications

Gap Voltage Validation and Axial Position Monitoring

The 1800/20 transmitter is designed for continuous measurement of rotor axial displacement using eddy-current proximity sensing technology. The transmitter converts shaft position information into a proportional 4-20 mA output suitable for PLC, DCS, and machinery monitoring interfaces.

Proper operation depends on correct probe system calibration and gap voltage verification during commissioning. In eddy-current measurement systems, initial probe positioning is commonly validated against the specified transducer operating range before thrust position scaling is applied. Verification of probe gap conditions assists in maintaining measurement linearity throughout the configured displacement range.

The transmitter supports thrust position supervision associated with rotating equipment where axial rotor movement must be monitored relative to defined mechanical clearances and operating limits.

Frequently Asked Questions

Q: What output signal does the 1800/20 transmitter provide?
A: The transmitter provides a standard 4-20 mA analog current output proportional to measured shaft position.

Q: What sensing technology is used for position measurement?
A: The transmitter utilizes non-contact eddy-current proximity sensing technology.

Q: What is the maximum specified load resistance?
A: The specified maximum load resistance is 750 Ohm with a 24 VDC supply.

Field Installation Guidelines

• Verify probe gap before transmitter calibration.

• Route probe cables separately from power wiring.

• Ground cable shields according to site standards.

• Confirm 24 VDC polarity before energization.

• Validate 4-20 mA loop operation during commissioning.