Bently Nevada 3500/32M 149986-02: Multi-Channel Vibration Monitoring Module

Product Description

The Bently Nevada 3500/32M 149986-02 is a high-performance multi-channel vibration monitoring module, a core component of the Bently Nevada 3500 Machinery Protection and Condition Monitoring System. Engineered to deliver precise vibration analysis for rotating machinery, this module captures, processes, and analyzes vibration signals to detect early faults such as unbalance, misalignment, and bearing degradation. With advanced digital signal processing and seamless integration into the 3500 system, it provides critical insights into machinery health, enabling proactive maintenance and minimizing unplanned downtime in industrial operations where reliable equipment performance is paramount.

Product Parameters

Parameter	Specification
Input Channels	4 independent vibration channels, compatible with proximity probes and velocity transducers
Vibration Measurement Range	±500 mV peak (proximity probes); 0.1–100 mm/s (velocity transducers)
Frequency Response	0.5 Hz to 10 kHz
Sampling Rate	51.2 kHz per channel
Accuracy	±0.5% of full scale
Alarm Configuration	Configurable alarm and danger thresholds with adjustable delays (0.1–60 s)
Output Signals	4–20 mA analog output per channel; digital data via 3500 backplane
Keyphasor Input	1 channel, compatible with 3500 Keyphasor modules for phase-synchronized analysis

Product Specifications

Series

The 3500/32M 149986-02 is an integral part of the Bently Nevada 3500 series, a comprehensive suite of machinery protection and condition monitoring solutions. The 3500 series features modular components, including vibration monitors, position monitors, communication gateways, and power supplies, all engineered for seamless integration. Renowned for scalability, reliability, and compliance with industry standards, the series is trusted worldwide to protect critical rotating machinery in industries such as power generation, oil & gas, and chemical processing. The 3500/32M enhances the series by providing advanced vibration monitoring capabilities, enabling precise fault detection and analysis for a wide range of industrial assets.

Features

Multi-Channel Monitoring

4 independent channels enable simultaneous vibration monitoring of multiple points on a single machine or across different assets, providing a holistic view of equipment health without requiring multiple modules.

High-Resolution Data Capture

A 51.2 kHz sampling rate per channel ensures detailed capture of vibration signals, allowing detection of subtle fault patterns (e.g., early bearing wear) that lower-resolution monitors might miss.

Flexible Sensor Compatibility

Supports both proximity probes (for relative vibration) and velocity transducers (for absolute vibration), adapting to diverse machinery types from turbines to pumps.

Phase-Synchronized Analysis

Integration with 3500 Keyphasor modules enables phase-correlated vibration analysis, critical for diagnosing rotational faults such as unbalance, misalignment, and shaft bow.

Intelligent Alarm Management

User-configurable alarm thresholds and delays minimize false alarms while ensuring critical faults trigger immediate alerts, balancing operational safety and productivity.

Function

The primary function of the 3500/32M 149986-02 is to monitor, process, and analyze vibration data from rotating machinery. It receives analog signals from connected sensors, converts them to digital data via high-speed sampling, and applies advanced filtering to extract key vibration metrics (e.g., peak amplitude, RMS, spectral components). It compares these metrics against user-defined thresholds, triggering alarms via relays or system alerts when anomalies are detected. By synchronizing with Keyphasor inputs, it enables phase analysis of vibration signals, facilitating accurate identification of rotational faults and supporting predictive maintenance strategies.

Use

In industrial settings, the module is installed in the 3500 system rack, connected to sensors mounted on critical rotating equipment such as turbines, compressors, and motors. It continuously monitors vibration at bearing housings, shafts, or casings, providing real-time data to operators via local HMIs or centralized control systems. Maintenance teams use its spectral analysis and waveform data to diagnose faults, schedule repairs, and avoid catastrophic failures, ensuring reliable operation of high-value industrial assets.

Application Fields

Power Generation

Monitors steam/gas turbines, generators, and feedwater pumps in coal, gas, and nuclear plants, detecting rotor instability, bearing degradation, and resonance to ensure continuous electricity production.

Oil and Gas

Protects centrifugal compressors, pipeline pumps, and gas turbines in upstream, midstream, and downstream operations, withstanding high temperatures and corrosive environments to safeguard energy assets.

Chemical Processing

Tracks vibration in reactors, mixers, and agitator pumps, enabling early fault detection to prevent leaks, process disruptions, and safety hazards in chemical manufacturing.

Pulp and Paper

Monitors paper machine rollers, motors, and fans, identifying misalignment, bearing wear, or imbalance to minimize production downtime and maintain product quality in high-speed manufacturing.

Mining and Metals

Safeguards crushers, conveyor motors, and slurry pumps in mining operations, withstanding dust, vibration, and temperature extremes to ensure reliable performance in rugged environments.

In summary, the Bently Nevada 3500/32M 149986-02 is a versatile vibration monitoring module that enhances the 3500 system’s capability to protect rotating machinery. Its advanced features, high accuracy, and seamless integration make it essential for industries seeking comprehensive, reliable machinery condition monitoring solutions.