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Product Overview
The Bently Nevada 3500/42M 176449-02 Preamplifier Earthquake Monitor is a high-performance monitoring module designed for detecting and analyzing seismic activity in industrial applications. As part of the 3500 Machinery Protection System, it works in conjunction with seismic or vibration transducers to sense low-level signals caused by earthquakes or other ground motion. The integrated preamplifier boosts these weak signals to levels suitable for accurate processing and alarm activation. With rugged design, self-diagnostics, and fast response, it is ideal for protecting critical equipment in earthquake-prone regions.
Key Features
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High-sensitivity preamplifier for seismic signal detection
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Designed for earthquake and ground motion monitoring
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Compatible with Bently Nevada seismic/vibration transducers
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Continuous monitoring for safety-critical installations
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Fault detection and self-diagnostics
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Supports alarm and shutdown system integration
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Industrial-grade construction for harsh environments
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 3500/42M |
| Part Number | 176449-02 |
| Module Type | Preamplifier Earthquake Monitor |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Function | Amplifies seismic signals for earthquake detection |
| Compatible Sensors | Bently Nevada seismic and vibration transducers |
| Frequency Range | Optimized for low-frequency seismic monitoring |
| Input Signal Range | Low-level vibration/seismic signals |
| Output Signal | Conditioned and amplified signal to processing modules |
| Diagnostics | Continuous self-check with fault reporting to the 3500 system |
| Power Supply | Via 3500 rack backplane |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 0% to 95% non-condensing |
| Dimensions | 241.3 x 24.4 x 241.8 mm |
| Weight | 0.91 kg |
| Certifications | CE, CSA, ATEX (depending on configuration) |
Industry Applications
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Oil & gas refineries and offshore platforms
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Petrochemical manufacturing plants
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Power generation facilities (nuclear, thermal, hydroelectric)
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Mining operations
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Water treatment facilities in seismic regions
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Heavy industrial plants in earthquake-prone zones
Frequently Asked Questions (FAQ)
Q1: What is the main purpose of the 3500/42M 176449-02?
It amplifies seismic sensor signals for accurate earthquake detection and equipment protection.
Q2: Can it monitor standard machinery vibration?
It is optimized for seismic applications but can process low-frequency vibration data.
Q3: How is it powered?
Through the Bently Nevada 3500 rack backplane.
Q4: Which sensors can be used with it?
Only compatible Bently Nevada seismic/vibration transducers.
Q5: Can it directly trigger plant shutdown?
It sends signals to the 3500 system, which then manages alarm/shutdown actions.
Q6: Is it certified for hazardous areas?
Yes, certain versions are ATEX and CSA certified.
Q7: Does it include built-in diagnostics?
Yes, it continuously monitors its own status and reports faults.
Q8: Can the module be replaced while the system is running?
Yes, it supports hot-swapping in the 3500 rack.
Q9: Is it suitable for marine environments?
Yes, when installed in compliant 3500 racks within protected enclosures.
Q10: What is its typical mounting location?
Inside a 3500 rack alongside other monitoring modules.
Related Modules
| Model Number | Description |
|---|---|
| 3500/40 | Proximitor® Monitor |
| 3500/45 | Position Monitor |
| 3500/50 | Tachometer Module |
| 3500/53 | Overspeed Detection Module |
| 3500/70 | Temperature Monitor |
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