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Product Introduction
The Bently Nevada 3500/42 Proximitor Seismic Monitor (176449-02+135489-03) is an advanced module designed for precise vibration and seismic monitoring of critical rotating machinery. It is part of the 3500 Series and interfaces with AC Proximitor probes or seismic sensors to provide accurate measurements of shaft displacement, velocity, and vibration.
This module supports dual or triple modular redundancy (TMR), ensuring high reliability and uninterrupted operation in mission-critical systems. By monitoring vibration patterns in real-time, the 3500/42 module enables early detection of mechanical issues such as misalignment, imbalance, looseness, or bearing wear. This proactive monitoring helps reduce unplanned downtime and enhances machinery protection.
Industries that rely on this module include power generation, petrochemical, oil & gas, and heavy manufacturing, where the reliability of rotating equipment is essential.
Product Parameters
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 3500/42 |
| Part Number | 176449-02+135489-03 |
| Product Type | Proximitor Seismic Monitor |
| Architecture | Triple Modular Redundant (TMR) / Dual Redundant Option |
| Input Signals | AC signals from proximity or seismic probes |
| Output Signals | Shaft displacement, velocity, and vibration data |
| Number of Channels | 1–2 channels per module |
| Frequency Response | 0–5 kHz typical |
| Probe Excitation Voltage | 8–12 VDC |
| Signal Conditioning | Integrated filtering, amplification, and demodulation |
| LED Indicators | Channel status, probe integrity, fault alarms |
| Mounting Type | Rack-mounted in 3500 Series chassis |
| Power Supply | 24 VDC via 3500 chassis backplane |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5%–95% non-condensing |
| Dimensions (W x H x D) | 241.3 x 24.4 x 241.8 mm |
| Weight | 0.91 kg |
Product Applications
The 3500/42 Proximitor Seismic Monitor is designed for monitoring critical machinery vibration and seismic events:
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Turbine & Generator Monitoring – Measures axial, radial, and torsional vibrations to detect early-stage faults.
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Compressor & Pump Protection – Detects imbalance, misalignment, and mechanical looseness.
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Industrial Rotating Equipment – Ensures safe operation of heavy machinery in industrial plants.
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Power Plants – Interfaces with SCADA/DCS for continuous vibration monitoring.
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Oil & Gas Facilities – Protects critical rotating machinery from vibration-induced damage.
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Predictive Maintenance Programs – Provides data for trend analysis and condition-based maintenance strategies.
Product Advantages
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High-Precision Measurement – Accurate displacement, velocity, and vibration detection.
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Redundant Architecture – Supports TMR or dual redundancy for uninterrupted monitoring.
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Real-Time Monitoring – Enables immediate detection of abnormal vibration patterns.
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Integrated Signal Processing – Built-in filtering, amplification, and demodulation enhance signal quality.
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Diagnostic Indicators – LED indicators display channel status, probe integrity, and fault conditions.
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Seamless Integration – Compatible with 3500 Series chassis and Bently Nevada probes.
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Industrial-Grade Reliability – Designed for high vibration, EMI, and temperature fluctuations.
FAQ
1. What types of probes are compatible with this module?
The module supports Bently Nevada AC Proximitor probes and seismic transducers.
2. How many channels can the module support?
It supports 1–2 channels depending on configuration.
3. What is the frequency response range?
The typical frequency response is 0–5 kHz.
4. Can the module operate in redundant configurations?
Yes, both dual and triple modular redundancy (TMR) configurations are supported.
5. Can it interface with DCS or PLC systems?
Yes, processed outputs can be routed to SCADA, DCS, or PLC systems for real-time monitoring.
6. How are diagnostics displayed?
LED indicators show channel status, probe signal integrity, and fault conditions.
7. What is the probe excitation voltage?
The module provides 8–12 VDC excitation to connected probes.
8. Is hot-swapping supported?
No, the module must be powered down before installation or removal.
9. What types of signals are output by the module?
It outputs processed shaft displacement, velocity, and vibration signals.
10. Can the module detect mechanical faults such as imbalance or looseness?
Yes, continuous monitoring enables detection of misalignment, imbalance, looseness, and bearing issues.
Recommended Related Models (Same Series)
| Model Number | Description |
|---|---|
| 3500/30 | Proximitor Monitor Module |
| 3500/40M | Proximitor Monitor Module |
| 3500/32 | 4-Channel Relay Module |
| 3500/34 | TMR Relay Module |
| 3500/36 | Analog Output Module |
| 3500/37 | Digital Input Module |
Popular Bently Nevada Models
| Model Number | Description |
|---|---|
| 3500/32 | 4-Channel Relay Module |
| 3500/33 | Redundant Relay Module |
| 3500/34 | TMR Relay Module |
| 3500/01 | Proximity Probe Monitor Module |
| 3300/20 | Shaft Position Transducer |
| 3500/05 | Velocity Transducer Monitor |
