Bently Nevada 3500/42M 125808-02 Proximitor Seismic External Block Terminal

Product Introduction

The Bently Nevada 3500/42M 125808-02 Proximitor Seismic External Block Terminal is part of the widely recognized 3500 Machinery Protection System, designed to provide advanced vibration monitoring and machinery protection. This module is specifically engineered to interface with proximity probes and seismic transducers, enabling precise measurement of shaft vibration, casing vibration, and rotor dynamics.

The “M” in 42M indicates a modernized version of the classic 3500/42 module, offering enhanced capabilities for industrial environments. With the External Block Terminal (EBT) design, the module provides simplified wiring, increased flexibility, and greater ease of maintenance during installation. It delivers continuous online monitoring, enabling predictive maintenance and reducing the risk of catastrophic equipment failure in critical turbomachinery such as turbines, compressors, motors, and generators.

Product Specifications

Product Applications

The 3500/42M 125808-02 is deployed across industries where machinery reliability and uptime are critical:

• Steam and Gas Turbines: Provides accurate monitoring of shaft and casing vibration.

• Compressors and Pumps: Detects imbalance, misalignment, and bearing issues in real-time.

• Electric Generators and Motors: Ensures reliability by monitoring both shaft dynamics and casing vibration.

• Petrochemical & Refinery Equipment: Protects critical assets in hazardous environments.

• Condition Monitoring Systems: Works as part of the 3500 rack to provide online machinery diagnostics and predictive maintenance data.

Product Advantages

The 3500/42M 125808-02 provides numerous technical and operational benefits:

• Versatile Monitoring: Supports both Proximitor and seismic transducers across four channels.

• Advanced Signal Processing: Digital filters ensure accurate vibration and displacement measurements.

• Integrated Alarming: Dual alarm levels per channel allow early detection and emergency response.

• Flexible Wiring: External Block Terminal (EBT) simplifies connections, reducing wiring complexity.

• Seamless Integration: Works natively within the 3500 system for comprehensive machinery protection.

• Compliance with Standards: Certified for use in hazardous industrial environments.

• High Reliability: Designed for 24/7 continuous monitoring in mission-critical applications.

• Scalability: Expandable to larger monitoring systems within the 3500 rack infrastructure.

FAQ

1. How many channels does the 3500/42M 125808-02 support?
   It supports four independent input channels for Proximitor or seismic sensors.

2. What types of transducers can be connected to this module?
   It is compatible with proximity probes, Proximitor sensors, and seismic vibration transducers.

3. Does the module provide alarm functionality?
   Yes, each channel has two configurable alarm levels: Alert and Danger.

4. What is the primary difference between the 42M and the older 42 module?
   The 42M features enhanced digital signal processing, expanded flexibility, and improved noise immunity.

5. How does the External Block Terminal benefit installation?
   EBT simplifies wiring, making installation faster and reducing the risk of connection errors.

6. Can the module output proportional signals for external systems?
   Yes, it provides 4–20 mA outputs proportional to the vibration measurements.

7. How is the module powered?
   It receives power directly from the 3500 system rack backplane, requiring no external supply.

8. What diagnostic features are available?
   The module includes built-in self-tests, channel health monitoring, and input validation.

9. How does it support predictive maintenance?
   By continuously monitoring shaft and casing vibration, it helps identify imbalance, misalignment, or bearing wear before failures occur.

10. Is the module certified for use in hazardous industrial environments?
    Yes, it is ATEX and IECEx certified, allowing deployment in explosive atmospheres.

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FAQ

1. How many channels does the 3500/42M 125808-02 support?
   It supports four independent input channels for Proximitor or seismic sensors.

2. What types of transducers can be connected to this module?
   It is compatible with proximity probes, Proximitor sensors, and seismic vibration transducers.

3. Does the module provide alarm functionality?
   Yes, each channel has two configurable alarm levels: Alert and Danger.

4. What is the primary difference between the 42M and the older 42 module?
   The 42M features enhanced digital signal processing, expanded flexibility, and improved noise immunity.

5. How does the External Block Terminal benefit installation?
   EBT simplifies wiring, making installation faster and reducing the risk of connection errors.

6. Can the module output proportional signals for external systems?
   Yes, it provides 4–20 mA outputs proportional to the vibration measurements.

7. How is the module powered?
   It receives power directly from the 3500 system rack backplane, requiring no external supply.

8. What diagnostic features are available?
   The module includes built-in self-tests, channel health monitoring, and input validation.

9. How does it support predictive maintenance?
   By continuously monitoring shaft and casing vibration, it helps identify imbalance, misalignment, or bearing wear before failures occur.

10. Is the module certified for use in hazardous industrial environments?
    Yes, it is ATEX and IECEx certified, allowing deployment in explosive atmospheres.

Recommended Related Models (Same Series/Category)

Popular Models from Bently Nevada (Same Brand)

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