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Bently Nevada 3500/42M 176449-02+140471-01 4-channel Proximitor / Seismic Monitor module
Manufacturer: Bently Nevada
Product Number: 3500/42M (176449-02, 140471-01)
Category: 4-Channel Proximitor / Seismic Monitor
Number of Channels: 4
Series: 3500 Series Machinery Protection System
Application: Continuous monitoring of vibration, displacement, and seismic signals for critical rotating machinery
Product Description
The Bently Nevada 3500/42M Proximitor / Seismic Monitor is a four-channel machinery protection and condition monitoring module used within the Bently Nevada 3500 Series rack system. It provides continuous monitoring of vibration, displacement, and position parameters on rotating and reciprocating machinery.
This module accepts input signals from proximity probes, velocity transducers, or accelerometers, processes them into engineering units, and compares the results against user-defined alert and danger setpoints. The 3500/42M is a key component of modern condition-based maintenance systems, offering both protection and diagnostic data for critical equipment such as turbines, compressors, pumps, and motors.
Each pair of channels can be configured independently, allowing a single module to perform multiple measurement functions simultaneously. The module provides both static (average) and dynamic (vibration waveform) data for advanced machinery diagnostics.
Key Features
-
Four-channel monitor supporting Proximitor, velocity, or acceleration sensor inputs.
-
Configurable per channel pair to measure vibration, thrust, eccentricity, or shaft position.
-
Real-time comparison against alert and danger limits for immediate machinery protection.
-
Compatible with Bently Nevada 3500 racks and communication modules.
-
Front module (176449-02) combined with rear I/O module (140471-01).
-
High noise immunity and robust industrial design for harsh environments.
-
Continuous system diagnostics and self-checking capability.
-
Compact, lightweight construction for space-efficient installation.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/42M | Proximitor / Seismic Monitor |
| Part Number (Front Module) | 176449-02 | Main signal processing module |
| I/O Module | 140471-01 | Rear termination module for standard inputs |
| Number of Channels | 4 (configured in two channel pairs) | Each pair can operate independently |
| Input Types | Proximitor probe, velocity transducer, accelerometer | Compatible with Bently Nevada sensors |
| Measurement Parameters | Radial vibration, axial position, shaft absolute, eccentricity, acceleration | Configurable per channel pair |
| Power Consumption | Approximately 7.7 W | Typical consumption for standard I/O module |
| Input Impedance | 10 kΩ nominal | High accuracy signal conditioning |
| Frequency Response (Direct Filter) | 4 Hz to 4,000 Hz (or 1 Hz to 600 Hz) | Depending on configuration |
| Frequency Response (Gap Filter) | 0.09 Hz (−3 dB) | For slow-varying displacement |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Based on probe system used |
| Rack Requirement | One full-height front slot and one rear slot | Standard 3500 rack design |
| Operating Temperature | −30 °C to +65 °C | Suitable for industrial environments |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Front module size |
| Weight | Approximately 0.46 kg (1.01 lb) | Lightweight modular design |
| Material | Aluminum alloy housing | Industrial-grade enclosure |
| Mounting Type | Plug-in rack module | Quick installation and replacement |
| Compliance | CE, CSA, ATEX (depending on configuration) | Meets international standards |
| Country of Origin | United States (Minden, Nevada, USA) | Manufactured by Bently Nevada, Baker Hughes |
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Bently Nevada 3500/42M 176449-02+140471-01 4-channel Proximitor / Seismic Monitor module
Manufacturer: Bently Nevada
Product Number: 3500/42M (176449-02, 140471-01)
Category: 4-Channel Proximitor / Seismic Monitor
Number of Channels: 4
Series: 3500 Series Machinery Protection System
Application: Continuous monitoring of vibration, displacement, and seismic signals for critical rotating machinery
Product Description
The Bently Nevada 3500/42M Proximitor / Seismic Monitor is a four-channel machinery protection and condition monitoring module used within the Bently Nevada 3500 Series rack system. It provides continuous monitoring of vibration, displacement, and position parameters on rotating and reciprocating machinery.
This module accepts input signals from proximity probes, velocity transducers, or accelerometers, processes them into engineering units, and compares the results against user-defined alert and danger setpoints. The 3500/42M is a key component of modern condition-based maintenance systems, offering both protection and diagnostic data for critical equipment such as turbines, compressors, pumps, and motors.
Each pair of channels can be configured independently, allowing a single module to perform multiple measurement functions simultaneously. The module provides both static (average) and dynamic (vibration waveform) data for advanced machinery diagnostics.
Key Features
-
Four-channel monitor supporting Proximitor, velocity, or acceleration sensor inputs.
-
Configurable per channel pair to measure vibration, thrust, eccentricity, or shaft position.
-
Real-time comparison against alert and danger limits for immediate machinery protection.
-
Compatible with Bently Nevada 3500 racks and communication modules.
-
Front module (176449-02) combined with rear I/O module (140471-01).
-
High noise immunity and robust industrial design for harsh environments.
-
Continuous system diagnostics and self-checking capability.
-
Compact, lightweight construction for space-efficient installation.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/42M | Proximitor / Seismic Monitor |
| Part Number (Front Module) | 176449-02 | Main signal processing module |
| I/O Module | 140471-01 | Rear termination module for standard inputs |
| Number of Channels | 4 (configured in two channel pairs) | Each pair can operate independently |
| Input Types | Proximitor probe, velocity transducer, accelerometer | Compatible with Bently Nevada sensors |
| Measurement Parameters | Radial vibration, axial position, shaft absolute, eccentricity, acceleration | Configurable per channel pair |
| Power Consumption | Approximately 7.7 W | Typical consumption for standard I/O module |
| Input Impedance | 10 kΩ nominal | High accuracy signal conditioning |
| Frequency Response (Direct Filter) | 4 Hz to 4,000 Hz (or 1 Hz to 600 Hz) | Depending on configuration |
| Frequency Response (Gap Filter) | 0.09 Hz (−3 dB) | For slow-varying displacement |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Based on probe system used |
| Rack Requirement | One full-height front slot and one rear slot | Standard 3500 rack design |
| Operating Temperature | −30 °C to +65 °C | Suitable for industrial environments |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Front module size |
| Weight | Approximately 0.46 kg (1.01 lb) | Lightweight modular design |
| Material | Aluminum alloy housing | Industrial-grade enclosure |
| Mounting Type | Plug-in rack module | Quick installation and replacement |
| Compliance | CE, CSA, ATEX (depending on configuration) | Meets international standards |
| Country of Origin | United States (Minden, Nevada, USA) | Manufactured by Bently Nevada, Baker Hughes |
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