Product Overview

The Bently Nevada 330500-01-05 is a high-performance Velomitor Piezo-velocity Sensor designed for the measurement of absolute casing vibration on rotating machinery. Unlike traditional moving-coil velocity transducers, this sensor utilizes piezoelectric technology with internal solid-state integration to convert acceleration into a velocity output. This design eliminates mechanical wear components, ensuring long-term stability and immunity to the "sticking" issues common in older sensor styles. Encased in a hermetically sealed 316L stainless steel housing, the 330500-01-05 is a fundamental component of Turbine Supervisory Instrumentation (TSI), providing the data necessary to detect shaft unbalance, misalignment, and mechanical looseness.

Key Technical Characteristics

The 330500-01-05 configuration is built to withstand extreme thermal and mechanical stress while maintaining high-fidelity signal transmission across a broad frequency range.

• Model Number 330500-01-05

• Transducer Type Piezo-velocity (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 -01)

• Agency Approvals Multiple international hazardous area certifications including ATEX, IECEx, and CSA (Option -05)

• Temperature Range -51°C to +177°C (-60°F to +351°F)

• Enclosure Material 316L Stainless Steel

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

• Orientation Omnidirectional (Vertical, horizontal, or angular mounting)

Industrial Applications

The 330500-01-05 Velomitor is the industry standard for monitoring the structural vibration of bearing housings and casings. It is a critical asset for predictive maintenance strategies in the following areas:

• Power Generation Monitoring casing vibration on steam and gas turbines to identify rotor-generated faults.

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

• Water Treatment Tracking the health of large motors and blowers to prevent unplanned downtime.

• General Industrial Detecting misalignment or bearing degradation in any high-speed rotating equipment where absolute vibration measurement is required.

By delivering a stable velocity signal to Bently Nevada 3500/42M or 1900/65A monitors, this sensor facilitates automated machinery protection and real-time diagnostic analysis. Its rugged construction ensures reliability in high-humidity and corrosive environments, protecting high-value industrial assets from catastrophic failure.