Product Overview

The Bently Nevada 330881-16-00-175-00-02 is an integrated PROXPAC XL proximity transducer assembly designed for high-precision displacement and vibration monitoring. This specialized hardware combines a 3300 XL 8mm proximity probe with a robust housing assembly, featuring an extensive 175mm (approx. 6.9 inches) penetration depth. By utilizing eddy current technology, the transducer measures the static and dynamic distance between the probe tip and a conductive target, such as a rotating shaft. This "all-in-one" design is specifically engineered for external mounting on machine casings, providing a seamless interface for Turbine Supervisory Instrumentation (TSI) systems.

Key Technical Characteristics

The PROXPAC XL series is built to withstand rigorous industrial conditions while maintaining the electrical characteristics required for API 670 machinery protection standards.

• Model Identification: 330881-16-00-175-00-02

• Probe Diameter: 8 mm (standard 3300 XL series)

• Penetration Depth: 175 mm (Option -175)

• Mounting Thread: 3/4-14 NPT (Option -16)

• Temperature Range: Rated for stable operation between -35°C and +85°C

• Housing Material: High-durability polyphenylene sulfide (PPS) and stainless steel components

• Connectivity: Designed for integration with standard 3300 XL extension cables and Proximitor sensors

• Installation Hardware: Includes necessary washers and plugs for environmental sealing (Option -02)

• Compliance: Meets stringent requirements for radial vibration and axial thrust measurements in hazardous areas

Industrial Applications and Operational Benefits

The 330881-16-00-175-00-02 is primarily utilized in heavy industrial sectors, including power generation, oil and gas, and petrochemical processing. Its primary role is the protection of large-scale rotating assets such as:

• Steam and Gas Turbines: Monitoring axial thrust position to prevent rotor-to-stator contact.

• Centrifugal Compressors: Capturing radial vibration data to detect bearing wear or shaft unbalance.

• Industrial Gearboxes: Measuring mechanical looseness and gear mesh signatures.

The PROXPAC XL design is particularly beneficial for applications requiring deep penetration through thermal insulation or thick machine housings. Its external mounting capability allows technicians to adjust the probe gap or replace the sensor without the need for internal machine access, significantly reducing maintenance downtime and improving safety in high-stakes operational environments.