Product Overview

The Bently Nevada 330500-00-02 is a high-performance Velomitor Piezo-velocity sensor designed for the continuous measurement of absolute casing vibration. Unlike traditional moving-coil velocity transducers that are susceptible to mechanical wear and sticking, this solid-state sensor utilizes piezoelectric technology combined with internal integration electronics. This architecture allows it to convert acceleration into a high-fidelity velocity signal without the use of moving parts. Encased in a hermetically sealed 316L stainless steel housing, the 330500-00-02 is a critical component of Turbine Supervisory Instrumentation (TSI) systems, providing the essential data required to detect shaft unbalance, misalignment, and mechanical looseness in rotating machinery.

Technical Hardware Parameters

The 330500-00-02 configuration is engineered for precision and durability, maintaining measurement integrity across a broad temperature and frequency range.

• Model Identification 330500-00-02

• Transducer Type Piezo-velocity (Internal solid-state integration)

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

• Frequency Response 4.5 Hz to 5.0 kHz (270 to 300,000 cpm) ±3.0 dB

• Mounting Thread 1/2-20 UNF (Option -00)

• Agency Approvals European (ATEX/IECEx) certifications (Option -02)

• Maximum Velocity Range 1270 mm/s (50 in/s) peak

• Temperature Range -51°C to +121°C (-60°F to +250°F)

• Enclosure Material 316L Stainless Steel

• Connector Type 2-pin MIL-C-5015 top-exit interface

• Mounting Orientation Omnidirectional (Vertical, horizontal, or any angle)

Industrial Applications

The 330500-00-02 Velomitor is the industry standard for monitoring the structural vibration of bearing housings and machine casings. It serves as a vital diagnostic tool in several high-stakes sectors:

• Power Generation Monitoring casing vibration on steam and gas turbines to detect rotor-generated faults transmitted through the structure.

• Oil and Gas Facilities Providing continuous monitoring for large centrifugal compressors and pumps in hazardous process zones.

• Balance-of-Plant (BoP) Equipment Protecting secondary assets like fans, blowers, and electric motors where casing-mount sensors are more practical than proximity probes.

• Hazardous Environments Utilizing its ATEX/IECEx certifications (Option -02) for safe deployment in explosive or volatile atmospheres.