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Bently Nevada 3500/42M 140471-01 Proximitor/Seismic Monitor
Manufacturer: Bently Nevada
Product Number: 3500/42M (140471-01)
Category: Four-channel Proximitor/Seismic Monitor (3500 Series)
Number of Channels: 4
Input Types: Proximity probes, velocity transducers, accelerometers
System Compatibility: Bently Nevada 3500 Series system
Product Description
The Bently Nevada 3500/42M Proximitor / Seismic Monitor is a four-channel machinery protection and condition monitoring module used in the Bently Nevada 3500 Series system. It accepts input signals from proximity probes, velocity transducers, or accelerometers and processes them to measure parameters such as radial vibration, shaft position, acceleration, velocity, and differential expansion.
Designed for continuous online monitoring, the 3500/42M provides both protection and diagnostics for critical rotating equipment, such as turbines, compressors, pumps, and motors. It continuously compares vibration and position measurements to configured alarm and danger setpoints, issuing alarms or trip commands when limits are exceeded. Each pair of channels can be configured independently, allowing multiple monitoring functions within one module.
The 3500/42M (140471-01) variant is a commonly used configuration with standard I/O modules and supports a wide range of transducer systems.
Key Features
-
Four independent input channels (two channel pairs)
-
Accepts proximity, velocity, or acceleration transducer inputs
-
Configurable for multiple measurement types (radial vibration, thrust, eccentricity, etc.)
-
Dual-function operation: each channel pair can perform separate monitoring tasks
-
Continuous comparison against alert and danger thresholds
-
Designed for use in the Bently Nevada 3500 rack system
-
Modular architecture allowing quick replacement without rewiring
-
High reliability, field-proven design for critical rotating machinery
-
Fully compatible with the 3500/22M communications module and 3500/20 power supply
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/42M | Four-channel Proximitor / Seismic Monitor |
| Part Number | 140471-01 | Standard configuration module |
| Number of Channels | 4 (two pairs) | Each pair independently configurable |
| Input Types | Proximity probes, velocity transducers, accelerometers | Compatible with Bently Nevada sensor systems |
| Measurement Types | Vibration, shaft position, acceleration, velocity, thrust position, eccentricity | User-configurable via software |
| Power Consumption | Approximately 7.7 W typical | From rack power supply |
| Input Impedance | 10 kΩ (standard I/O) | Ensures stable signal conditioning |
| Frequency Response (Direct Filter) | –3 dB from 4 Hz to 4 kHz or 1 Hz to 600 Hz | Depends on configuration |
| Gap Filter | –3 dB at 0.09 Hz | For slow-speed shaft position measurements |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Determined by transducer system used |
| Alarm Setpoints | Two per channel (Alert and Danger) | User-programmable |
| Rack Space Requirement | One full-height front slot and one full-height rear slot | Standard 3500 rack mounting |
| Operating Temperature Range | −30 °C to +65 °C (−22 °F to +149 °F) | Suitable for industrial environments |
| Humidity Range | Up to 95% non-condensing | Industrial standard |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Compact front module |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight and robust |
| Mounting Type | Plug-in rack module | Front and rear installation |
| Material | Aluminum alloy chassis with polymer faceplate | Industrial grade |
| Compliance | CE, CSA, ATEX (varies by version) | Certified for global industrial use |
| Country of Origin | United States (Minden, Nevada) | Manufactured by Bently Nevada, Baker Hughes |
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Bently Nevada 3500/42M 140471-01 Proximitor/Seismic Monitor
Manufacturer: Bently Nevada
Product Number: 3500/42M (140471-01)
Category: Four-channel Proximitor/Seismic Monitor (3500 Series)
Number of Channels: 4
Input Types: Proximity probes, velocity transducers, accelerometers
System Compatibility: Bently Nevada 3500 Series system
Product Description
The Bently Nevada 3500/42M Proximitor / Seismic Monitor is a four-channel machinery protection and condition monitoring module used in the Bently Nevada 3500 Series system. It accepts input signals from proximity probes, velocity transducers, or accelerometers and processes them to measure parameters such as radial vibration, shaft position, acceleration, velocity, and differential expansion.
Designed for continuous online monitoring, the 3500/42M provides both protection and diagnostics for critical rotating equipment, such as turbines, compressors, pumps, and motors. It continuously compares vibration and position measurements to configured alarm and danger setpoints, issuing alarms or trip commands when limits are exceeded. Each pair of channels can be configured independently, allowing multiple monitoring functions within one module.
The 3500/42M (140471-01) variant is a commonly used configuration with standard I/O modules and supports a wide range of transducer systems.
Key Features
-
Four independent input channels (two channel pairs)
-
Accepts proximity, velocity, or acceleration transducer inputs
-
Configurable for multiple measurement types (radial vibration, thrust, eccentricity, etc.)
-
Dual-function operation: each channel pair can perform separate monitoring tasks
-
Continuous comparison against alert and danger thresholds
-
Designed for use in the Bently Nevada 3500 rack system
-
Modular architecture allowing quick replacement without rewiring
-
High reliability, field-proven design for critical rotating machinery
-
Fully compatible with the 3500/22M communications module and 3500/20 power supply
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Model Number | 3500/42M | Four-channel Proximitor / Seismic Monitor |
| Part Number | 140471-01 | Standard configuration module |
| Number of Channels | 4 (two pairs) | Each pair independently configurable |
| Input Types | Proximity probes, velocity transducers, accelerometers | Compatible with Bently Nevada sensor systems |
| Measurement Types | Vibration, shaft position, acceleration, velocity, thrust position, eccentricity | User-configurable via software |
| Power Consumption | Approximately 7.7 W typical | From rack power supply |
| Input Impedance | 10 kΩ (standard I/O) | Ensures stable signal conditioning |
| Frequency Response (Direct Filter) | –3 dB from 4 Hz to 4 kHz or 1 Hz to 600 Hz | Depends on configuration |
| Gap Filter | –3 dB at 0.09 Hz | For slow-speed shaft position measurements |
| Sensitivity | 3.94 mV/µm (100 mV/mil) or 7.87 mV/µm (200 mV/mil) | Determined by transducer system used |
| Alarm Setpoints | Two per channel (Alert and Danger) | User-programmable |
| Rack Space Requirement | One full-height front slot and one full-height rear slot | Standard 3500 rack mounting |
| Operating Temperature Range | −30 °C to +65 °C (−22 °F to +149 °F) | Suitable for industrial environments |
| Humidity Range | Up to 95% non-condensing | Industrial standard |
| Dimensions (H × W × D) | 241.3 mm × 24.4 mm × 163.1 mm (9.50 in × 0.96 in × 6.42 in) | Compact front module |
| Weight | Approx. 0.46 kg (1.01 lb) | Lightweight and robust |
| Mounting Type | Plug-in rack module | Front and rear installation |
| Material | Aluminum alloy chassis with polymer faceplate | Industrial grade |
| Compliance | CE, CSA, ATEX (varies by version) | Certified for global industrial use |
| Country of Origin | United States (Minden, Nevada) | Manufactured by Bently Nevada, Baker Hughes |
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