Configured for vibration amplitude measurement in machinery protection monitoring loops, the Bently Nevada 990-10-XX-02-00 (990-10-XX-02-00 2-Wire Vibration Transmitter) provides direct physical signal conversion from vibration input to a 4-20 mA output loop.
Hardware Specifications
Parameter
Specification
Model
990-10-XX-02-00
Brand
Bently Nevada
Product Type
2-Wire Vibration Transmitter
Origin
USA
Weight
Approx. 0.44 kg
Dimensions
Compact transmitter housing design
Operating Temp
Industrial operating environment
Power Consumption
Loop-powered through 4-20 mA circuit
Input Type
Integrated proximity sensing system
Output Signal
4-20 mA proportional vibration signal
Wiring Configuration
Two-wire loop connection
Measurement Function
Converts vibration displacement into electrical current output
Signal Processing
Internal signal conditioning and amplification
Mounting Application
OEM centrifugal compressors, pumps, motors, and fans
Eddy-Current Probe Scaling and Rotor Dynamics Monitoring
The 990-10-XX-02-00 transmitter processes vibration signals through an integrated proximity measurement arrangement. The device applies eddy-current probe scaling principles to convert mechanical shaft movement into a proportional electrical output.
The transmitter architecture supports rotor dynamics monitoring by conditioning vibration amplitude signals before transmission to control or monitoring equipment. The signal path is designed for continuous vibration measurement without requiring a separate external transmitter module.
The Bently Nevada measurement approach includes gap voltage validation practices, with proximity systems typically referenced around -10 VDC target gap voltage conditions for correct probe operating range verification. Signal conditioning also considers cross-talk suppression requirements in rotating machinery environments where multiple vibration channels operate nearby.
Frequently Asked Questions
Q: Does the 990-10-XX-02-00 require a separate power supply connection? A: No. The transmitter uses a two-wire loop-powered configuration and receives operating power through the 4-20 mA current loop.
Q: What type of output signal does this transmitter provide? A: The device provides a conditioned 4-20 mA analog output proportional to the measured vibration level.
Q: Can the transmitter connect directly to a control system input? A: Yes. The standard 4-20 mA output is designed for connection to compatible industrial control and monitoring input channels.
Field Installation Guidelines
Install the transmitter according to the approved mechanical mounting arrangement of the monitored machine.
Maintain correct proximity probe positioning and verify probe gap conditions before operation.
Use shielded instrumentation wiring where required by the installation environment.
Connect cable shields according to site grounding practices to reduce electrical interference.
Separate vibration signal wiring from high-current power cables to minimize induced noise.
Confirm the receiving control system input is configured for a 4-20 mA current loop signal.
Inspect all terminal connections for correct polarity before energizing the measurement loop.
