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Bently Nevada 3500/42 138700-01 Proximitor/Seismic Monitor
Manufacturer: Bently Nevada
Product Number: 3500/42 (138700-01)
Category: 4-Channel Proximitor/Seismic Monitor
Number of Channels: 4
Series: 3500 Machinery Protection System
Application: Continuously measures and monitors vibration, shaft position, and seismic signals for critical rotating equipment
Product Description
The Bently Nevada 3500/42 138700-01 is a four-channel Proximitor/Seismic Monitor designed for use in the 3500 Machinery Protection System. It continuously measures and monitors vibration, shaft position, and seismic signals from proximity probes, accelerometers, or velocity transducers. This module provides critical protection and early fault detection for rotating and reciprocating machinery, ensuring reliable operation and compliance with industry standards such as API 670.
Main Features
-
Four independent channels supporting proximity, velocity, or seismic inputs
-
Configurable measurement types including radial vibration, axial position, velocity, and acceleration
-
Dual-level alarms with programmable Alert and Danger setpoints
-
Buffered transducer outputs for advanced analysis and diagnostics
-
Hot-swappable design for ease of replacement without system interruption
-
LED indicators for module and channel status monitoring
-
Redundant rack power support through the 3500 backplane
-
Seamless integration with the 3500 system software for configuration and management
-
API 670 compliant, ensuring suitability for critical machinery protection applications
Technical Specifications
Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 241.3 × 24.4 × 163.1 mm |
| Weight | 0.46 kg |
General Information
| Item | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 3500/42 138700-01 |
| Product Type | Proximitor/Seismic Monitor Module |
| Mounting | 3500 rack slot, hot-swappable |
| Operating Temp | -30°C to +65°C |
| Storage Temp | -40°C to +85°C |
Electrical Characteristics
| Item | Specification |
|---|---|
| Channels | 4 |
| Input Types | Proximity probes, accelerometers, velocity sensors |
| Input Range | ±200 mV (sensor dependent) |
| Outputs | 4–20 mA proportional outputs, buffered signals |
| Resolution | 12-bit |
| Alarm Levels | Two per channel (Alert and Danger) |
| Power Supply | Via 3500 rack backplane, redundant supported |
Environmental Specifications
| Item | Specification |
|---|---|
| Humidity Range | 0–95% RH (non-condensing) |
| Vibration | 5–2000 Hz, 0.7 g |
| Shock Resistance | 30 g, 11 ms |
| Protection Class | Designed for industrial environments |
Industry Applications
The Bently Nevada 3500/42 138700-01 is widely applied in machinery monitoring and protection across industries:
-
Oil & Gas: Turbines, compressors, and critical rotating assets
-
Power Generation: Steam and gas turbines, and large generators
-
Petrochemical & Chemical: Compressors, pumps, and reactor equipment
-
Metals & Mining: Crushers, mills, and high-power rotating machines
-
Marine & Offshore: Propulsion systems, compressors, and diesel engines
-
Pulp & Paper: Paper machinery, motors, and critical rotating drives
Bently Nevada 3500/42 138700-01 Proximitor/Seismic Monitor
Manufacturer: Bently Nevada
Product Number: 3500/42 (138700-01)
Category: 4-Channel Proximitor/Seismic Monitor
Number of Channels: 4
Series: 3500 Machinery Protection System
Application: Continuously measures and monitors vibration, shaft position, and seismic signals for critical rotating equipment
Product Description
The Bently Nevada 3500/42 138700-01 is a four-channel Proximitor/Seismic Monitor designed for use in the 3500 Machinery Protection System. It continuously measures and monitors vibration, shaft position, and seismic signals from proximity probes, accelerometers, or velocity transducers. This module provides critical protection and early fault detection for rotating and reciprocating machinery, ensuring reliable operation and compliance with industry standards such as API 670.
Main Features
-
Four independent channels supporting proximity, velocity, or seismic inputs
-
Configurable measurement types including radial vibration, axial position, velocity, and acceleration
-
Dual-level alarms with programmable Alert and Danger setpoints
-
Buffered transducer outputs for advanced analysis and diagnostics
-
Hot-swappable design for ease of replacement without system interruption
-
LED indicators for module and channel status monitoring
-
Redundant rack power support through the 3500 backplane
-
Seamless integration with the 3500 system software for configuration and management
-
API 670 compliant, ensuring suitability for critical machinery protection applications
Technical Specifications
Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 241.3 × 24.4 × 163.1 mm |
| Weight | 0.46 kg |
General Information
| Item | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 3500/42 138700-01 |
| Product Type | Proximitor/Seismic Monitor Module |
| Mounting | 3500 rack slot, hot-swappable |
| Operating Temp | -30°C to +65°C |
| Storage Temp | -40°C to +85°C |
Electrical Characteristics
| Item | Specification |
|---|---|
| Channels | 4 |
| Input Types | Proximity probes, accelerometers, velocity sensors |
| Input Range | ±200 mV (sensor dependent) |
| Outputs | 4–20 mA proportional outputs, buffered signals |
| Resolution | 12-bit |
| Alarm Levels | Two per channel (Alert and Danger) |
| Power Supply | Via 3500 rack backplane, redundant supported |
Environmental Specifications
| Item | Specification |
|---|---|
| Humidity Range | 0–95% RH (non-condensing) |
| Vibration | 5–2000 Hz, 0.7 g |
| Shock Resistance | 30 g, 11 ms |
| Protection Class | Designed for industrial environments |
Industry Applications
The Bently Nevada 3500/42 138700-01 is widely applied in machinery monitoring and protection across industries:
-
Oil & Gas: Turbines, compressors, and critical rotating assets
-
Power Generation: Steam and gas turbines, and large generators
-
Petrochemical & Chemical: Compressors, pumps, and reactor equipment
-
Metals & Mining: Crushers, mills, and high-power rotating machines
-
Marine & Offshore: Propulsion systems, compressors, and diesel engines
-
Pulp & Paper: Paper machinery, motors, and critical rotating drives
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