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Bently Nevada 135321-01 3300/16 Dual Vibration Monitor Module

The Bently Nevada 135321-01, also cataloged as the 3300/16 Dual Vibration Monitor Processor Board, operates as a dedicated hardware component for radial vibration and average shaft position signal processing within the Bently Nevada 3300 Machinery Protection System.

Hardware Specifications

Parameter	Specification
Model	135321-01
Brand	Bently Nevada (Baker Hughes)
Origin	USA
Weight	Approx. 1000 g (packaged unit)
Dimensions	Not specified
Operating Temp	Industrial operating range, not specified
Power Consumption	Not specified
Associated System	3300 Machinery Protection System
Module Type	Dual Vibration Monitor Processor Board
Monitoring Channels	2 independent vibration channels
Measurement Function	Radial vibration and average shaft position (gap) monitoring
Input Interface	Bently Nevada Proximitor proximity probe signals
Frequency Range	1 Hz to 600 Hz (60 to 36,000 cpm)
Measurement Accuracy	Typically within +/-0.33% of full-scale
Output Functions	Alarm relay interface and buffered transducer signal output

Eddy-Current Probe Signal Scaling and Rotor Dynamics Processing

The 135321-01 processor board performs signal conditioning for eddy-current proximity probe inputs connected through the Bently Nevada 3300/16 monitoring architecture. The processing path maintains probe scaling characteristics required for vibration amplitude calculation and shaft position gap measurement.

The module supports rotor dynamics monitoring functions by converting displacement signals into processed vibration values suitable for machinery protection logic. Signal validation includes verification of probe operating conditions and gap voltage behavior, with typical proximity systems using -10 VDC target gap voltage references for proper probe positioning.

Internal processing is designed to minimize measurement errors caused by signal interference, including cross-talk suppression between monitoring channels and controlled handling of dynamic shaft displacement signals.

Frequently Asked Questions

Q: Can the 135321-01 operate as a standalone vibration monitor without the 3300/16 system chassis?
A: No. The 135321-01 is a processor board component designed for integration within the Bently Nevada 3300/16 Dual Vibration Monitor assembly and requires the associated system hardware.

Q: What type of sensors are compatible with the 135321-01 input interface?
A: The module is designed for use with Bently Nevada Proximitor systems and non-contacting eddy-current proximity probe sensor circuits.

Q: Does the module provide direct vibration analysis outputs?
A: The board processes vibration and gap measurement signals and provides system-level outputs through the configured 3300/16 monitoring hardware, including buffered transducer signal access.

Field Installation Guidelines

• Install the 135321-01 only within the designated Bently Nevada 3300/16 monitor assembly location.
• Verify proximity probe wiring polarity and signal shielding before energizing the monitoring rack.
• Route eddy-current probe cables separately from high-voltage power conductors to reduce electrical interference.
• Connect cable shields according to the machinery protection system grounding practice and avoid multiple-point shield grounding where it may introduce ground loops.
• Confirm probe gap voltage and sensor circuit operation before placing the vibration channel into service.
• Perform channel verification after installation to confirm correct vibration amplitude scaling and shaft position measurement response.

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