Product Overview

The Bently Nevada 3500/42M 140734-02 is a four-channel monitor designed for the 3500 Series machinery protection system. It accepts inputs from both proximity probes (eddy current) and seismic transducers (velocity or acceleration), enabling comprehensive vibration monitoring of rotating machinery. The module provides continuous comparison of measured values against programmable alarm setpoints and generates relay outputs for alert and danger conditions.

Key Features

• 4 independent channels configurable for proximity or seismic inputs

• Supports radial vibration, axial position, and seismic measurements

• Programmable alarm setpoints with relay outputs

• Buffered outputs for each channel for diagnostic analysis

• Compatible with 3500 rack and communication modules

• Hot-swappable module for maintenance without system disruption

Technical Specifications

• Model: 3500/42M (Part Number: 140734-02)

• Input Channels: 4

• Input Types: Proximity (eddy current) or seismic (velocity/acceleration)

• Frequency Range: 0 to 10 kHz (proximity), 0.5 Hz to 1 kHz (seismic)

• Dynamic Range: Up to 500 µm pp (proximity), 50 mm/s RMS (seismic)

• Outputs: 4-20 mA analog, relay contacts

• Power Supply: From rack backplane

• Operating Temperature: -30°C to +65°C

Applications

This monitor is essential for protecting turbines, compressors, generators, and large pumps. It provides critical data for rotor dynamics, bearing condition, and casing vibration, enabling early detection of faults.

Benefits

With its flexible input configuration, the 3500/42M can be tailored to specific machine requirements. Its high reliability and accuracy ensure that alarm conditions are detected promptly, reducing the risk of catastrophic failure. Integration with the 3500 system allows centralized monitoring and data analysis.

Conclusion

The Bently Nevada 3500/42M 140734-02 vibration monitor is a versatile and dependable component of the 3500 system, delivering robust protection for critical rotating assets.