Product Overview

The Bently Nevada 330500-04-01 is a Velomitor piezo-velocity sensor used to measure absolute vibration velocity on bearing housings, machine casings, and structural members. It is installed directly on the machine structure to capture casing vibration generated by rotor-related forces and process conditions, providing a velocity-proportional output suitable for vibration monitoring and machinery protection systems.

This sensor uses a solid-state piezoelectric element with integrated electronics and contains no moving parts, which supports stable long-term performance in industrial environments. Correct mounting location and rigid attachment are essential for accurate amplitude and frequency response and to avoid measurement distortion from loose or compliant mounting surfaces.

Hardware Parameters

Practical installation notes

• Use a clean, flat mounting surface and proper torque per site procedures to maintain repeatable measurements.

• Route cabling away from high-power conductors and ensure proper grounding practices to reduce electrical noise pickup.

Industrial Applications

• Casing vibration monitoring on turbines, compressors, pumps, motors, fans, and gearboxes

• Machinery protection and condition monitoring programs where velocity is the preferred vibration parameter

• Fault detection support for common issues such as unbalance, misalignment, looseness, and structural resonance conditions

• Industrial environments requiring robust sensors with minimal maintenance due to solid-state construction