Product Description

Overview

The Bently Nevada 3500/42M (140734-02) is a four-channel Proximitor Seismic Monitor module designed to safeguard critical rotating machinery. By continuously comparing measured vibration and position signals against configurable alarm thresholds, it enables early detection of abnormal operating conditions and provides actionable data for operations and maintenance personnel. This module conditions input from proximity and seismic transducers to produce high-accuracy measurements, supporting a wide range of machinery protection and monitoring applications.

Key Features and Functions

• Four Independent Channels: Each channel can monitor a unique transducer input or paired measurements, configurable for specific machine parameters.

• Comprehensive Measurement Support: Capable of tracking radial vibration, REBAM (Rolling Element Bearing Analysis Monitoring), thrust position, acceleration, velocity, shaft eccentricity, differential expansion, and absolute shaft position.

• Programmable Alarm Setpoints: Configure alert and danger thresholds for each measurement parameter to ensure timely machinery protection actions.

• Signal Conditioning: Converts raw displacement, velocity, or acceleration signals into precise, actionable data.

• Buffered Outputs: Front-panel coaxial connectors allow connection of portable analyzers without interrupting module operation.

• Self-Diagnostics: Continuously monitors module and transducer health to prevent false trips and ensure operational reliability.

• Multimode Flexibility (“M” Series): Supports a variety of measurement types and configurations for high-criticality equipment monitoring.

Technical Specifications

Applications

The 3500/42M module is ideal for high-value rotating equipment such as turbines, compressors, and generators. It provides precise vibration and shaft position measurements for preventive maintenance, condition monitoring, and real-time machinery protection, ensuring operational safety and minimizing unplanned downtime.

FAQ

Q: Can the 3500/42M module function without an I/O module?
A: No, it requires an I/O module (e.g., 128229-01 or 128240-01) for full integration into the 3500 Series rack system.

Q: What measurement types are supported?
A: Radial vibration, thrust position, velocity, acceleration, differential expansion, eccentricity, shaft absolute position, and REBAM analysis.

Q: Is the module suitable for high-criticality applications?
A: Yes, it supports TMR (Triple Modular Redundancy) configurations for systems where single-point failures are unacceptable.

Similar Models: The 3500/22M supports dual-channel monitoring, while the 3500/50M is designed for additional vibration and process parameters.