Product Overview

The Bently Nevada 330500-00-20 Velomitor piezo-velocity sensor (configured as model 330500-02-01) is a solid-state vibration transducer used to measure absolute casing or structure vibration on rotating and reciprocating equipment. The sensor outputs a voltage signal proportional to vibration velocity, supporting continuous condition monitoring and machinery protection programs.

This device is typically mounted on bearing housings, gearbox cases, pump or motor frames, and other rigid structural points where casing vibration best represents machine condition. The internal electronics and piezoelectric sensing element are packaged in a sealed, no-moving-parts construction to maintain stable performance over long service intervals.

Hardware Parameters

• Solid-state piezo-velocity technology with integrated electronics (no moving parts)

• Measures absolute vibration velocity on machine casings and structures

• Integral cable length (listing data): 6.0 m / 20 ft

• Sensitivity (listing data): 3.94 mV/mm/s (100 mV/in/s) ±5%

• Maximum velocity capability (listing data): up to 1270 mm/s peak

• Dynamic output impedance (listing data): < 2400 Ω

• Orientation: can be installed vertically, horizontally, or at an angle (application dependent)

Technical and commercial data (as provided)

Industrial Applications

• Casing vibration monitoring for turbines, compressors, pumps, motors, and fans

• General-purpose vibration points on gearboxes and skids where proximity probes are impractical

• Fault detection for unbalance, misalignment, looseness, and structural resonance (monitoring system dependent)

• Predictive maintenance data collection for trending and alarm strategies in plant DCS/PLC or vibration monitoring platforms