Bently Nevada 86517-01-01-01-01 Accelerometer Interface Module

Product Introduction

The Bently Nevada 86517-01-01-01-01 Accelerometer Interface Module is a precision signal conditioning device designed to interface with industrial accelerometers. It converts raw charge outputs from piezoelectric accelerometers into conditioned voltage signals for reliable input into monitoring systems.

This module ensures accurate vibration measurement, providing high-fidelity signal transmission while minimizing noise and distortion. With built-in filtering and signal biasing, it supports precise monitoring of machinery dynamics in industrial environments.

It is widely used for predictive maintenance and machinery protection in turbines, compressors, pumps, and other critical rotating equipment where vibration monitoring is essential.

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Product Specifications

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Applications

• Turbines – Provides conditioned accelerometer signals for accurate vibration monitoring

• Compressors – Supports detection of rotor imbalance and mechanical faults

• Pumps and Process Machinery – Monitors vibrations for predictive maintenance

• Industrial Motors – Enables precise tracking of high-speed rotor dynamics

• Power Generation Equipment – Integrates with protection systems to detect early anomalies

• Oil & Gas Machinery – Maintains reliable vibration monitoring under harsh industrial conditions

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Advantages

• High-Fidelity Signal Conditioning – Converts raw charge to stable voltage outputs

• Integrated Filtering – 25 Hz high-pass and 350 Hz low-pass filters for precise signal shaping

• Signal Biasing – -10 VDC bias ensures compatibility with monitoring inputs

• Noise Reduction – Minimizes distortion and interference in industrial environments

• Seamless System Integration – Designed for Bently Nevada monitoring systems

• Reliable Performance – Maintains stability under vibration, dust, and temperature variations

FAQ

1. What does the 50 pC/g charge sensitivity mean?
It indicates the amount of charge generated by the accelerometer per unit of acceleration, affecting signal amplitude for monitoring.

2. How do the high-pass and low-pass filters affect the measurement?
The 25 Hz high-pass removes low-frequency drift and noise, while the 350 Hz low-pass limits high-frequency interference, ensuring clean signals.

3. Why is a -10 VDC signal bias used?
The bias aligns the voltage output with the input requirements of the monitoring system, ensuring proper interpretation of signals.

4. Can this module handle multiple accelerometers at once?
Each module typically interfaces with a single accelerometer; multiple modules are used for multi-sensor setups.

5. How does it maintain accuracy in electrically noisy environments?
It uses filtering, shielding, and impedance matching to protect signals from interference.

6. Is it suitable for high-vibration industrial environments?
Yes, it is designed to maintain stable output under strong vibration conditions.

7. What is the importance of charge-to-voltage conversion?
Monitoring systems require voltage signals; the module converts high-impedance charge outputs to usable voltage.

8. How does installation affect performance?
Proper mounting and secure connectors are crucial to prevent signal loss or distortion.

9. Can it be integrated with legacy Bently Nevada systems?
Yes, it is compatible with 3500 Series and other systems that accept voltage input signals.

10. How does this module improve predictive maintenance?
By delivering clean, accurate vibration signals, it enables early detection of mechanical faults, reducing unplanned downtime.

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