BENTLY NEVADA 330500-04-00 Velomitor Piezo-velocity Sensor

Description

BENTLY NEVADA 330500-04-00 Velomitor Piezo-velocity Sensor is a general-purpose device designed to measure absolute vibration of bearing housings, enclosures, or structures relative to free space. It utilizes piezoelectric crystal technology with an integrated circuit embedded in the accelerometer, converting vibration acceleration into a velocity signal output. With no moving parts, the sensor eliminates mechanical wear and degradation for long-term reliable operation. Key technical specifications include a frequency range of 4.5Hz to 5kHz (±3dB) and a sensitivity of 3.94mV/mm/s (100mV/in/s) ±5%. It offers high installation flexibility, supporting vertical, horizontal, or angled mounting without requiring special calibration or surface preparation. As part of the Velomitor product line, it has enhanced variants: the 330525 Velomitor XA meets NEMA 4X/IP65 protection ratings for use in high-temperature or corrosive environments, while the 330750/330752 high-temperature series separates the probe from signal processing circuitry for extended temperature tolerance, ideal for gas turbines. Typical applications include condition monitoring of rolling bearing equipment such as pumps and fans, and gear mesh frequency monitoring when paired with an accelerometer. Note that rotor imbalance or misalignment faults may not be fully reflected by housing vibration, so measurement validity should be evaluated for specific use cases.