Description

The Bently Nevada 3500/42 Proximitor/Seismic Monitor Module, also cataloged as the 3500/42 Proximitor/Seismic Monitor Module, operates as a dedicated hardware component for proximity and seismic signal monitoring within the 3500 Monitoring System platform.

Hardware Specifications

Eddy-Current Proximity and Rotor Dynamics Signal Processing

The 3500/42 Proximitor/Seismic Monitor Module processes proximity and seismic measurement signals for rotating machinery monitoring applications. The module interfaces with eddy-current proximity measurement systems and seismic sensing circuits to acquire dynamic machine condition data.

The module configuration supports eddy-current probe scaling procedures and requires verification of probe clearance, signal polarity, and gap voltage conditions during commissioning. The -10 VDC gap voltage target is commonly referenced for proximity probe installation and operating point validation.

The Smax operating range of 0.125 to 15.8 times running speed supports rotor dynamics measurement analysis across variable frequency components. The gap filter response of -3 dB at 0.09 Hz defines the low-frequency filtering characteristic applied within the measurement path.

Frequently Asked Questions

Q: What signal types does the 3500/42 module monitor?
A: The module is configured as a Proximitor/Seismic Monitor Module for proximity and seismic measurement signal processing.

Q: What is the specified gap filter characteristic of the module?
A: The module provides a gap filter response of -3 dB at 0.09 Hz.

Q: What Smax range is supported by the 3500/42 module?
A: The specified Smax range is from 0.125 to 15.8 times running speed.

Field Installation Guidelines

Install the module in the assigned 3500 rack position and confirm correct mechanical retention before energizing the system. Verify that connected proximity probes and seismic sensors match the configured monitoring channels.

Route sensor wiring separately from high-current power cables and maintain proper cable shielding practices. Connect shields according to the monitoring rack grounding method to minimize electrical interference.

Before operation, verify probe mechanical clearance, signal polarity, sensor connection integrity, and channel configuration. Confirm that the measurement range and filtering settings correspond with the monitored rotating equipment requirements.