Product Overview

The Bently Nevada 135489-03 is a high-performance piezoelectric accelerometer designed for permanent installation on industrial machinery. Utilizing ICP® technology, it incorporates built-in electronics to condition the signal, producing a low-impedance voltage output that is easy to interface with monitoring systems. This sensor is ideal for measuring casing vibration on equipment such as turbines, compressors, and pumps.

Key Features

• ICP® compatible for easy integration with standard data collectors and monitors

• Wide frequency range covering both low-speed and high-speed machinery

• High temperature rating for demanding applications

• Hermetically sealed stainless steel housing

• Isolated case design to avoid ground loops

• Available with various mounting options and cable lengths

Technical Specifications

• Model: 135489-03

• Sensitivity: 100 mV/g ±10%

• Frequency Response: 0.5 Hz to 10 kHz ±3dB

• Measurement Range: ±80 g peak

• Resonant Frequency: >25 kHz

• Output Impedance:<100 ohms

• Power Requirement: 18-30 VDC constant current 2-10 mA

• Operating Temperature: -50°C to +120°C

• Protection Class: IP68

Applications

This accelerometer is widely used in power generation, oil & gas, and heavy industry for monitoring vibration on critical and non-critical machinery. It is particularly suited for high-temperature environments such as gas turbines and reciprocating compressors.

Benefits

The 135489-03 provides accurate vibration data essential for condition-based maintenance. Its rugged construction ensures long life in harsh conditions, while the ICP® output simplifies cabling and signal conditioning. The sensor's wide frequency response allows detection of a broad range of faults, from imbalance to high-frequency bearing defects.

Conclusion

The Bently Nevada 135489-03 accelerometer delivers reliable performance for continuous vibration monitoring. With its robust design and advanced features, it helps protect machinery investments and optimize maintenance schedules.