Product Overview

The Bently Nevada 330881-28-05-114-03-02 is a comprehensive PROXPAC XL transducer assembly that integrates a 3300 XL proximity sensor, extension cable, and Proximitor sensor into a single, robust environmental housing. This "all-in-one" solution is engineered to simplify the installation of eddy current displacement sensors on machinery where external mounting is required. By enclosing the sensitive connection points and signal conditioning electronics within a weather-resistant aluminum or stainless steel housing, the PROXPAC XL ensures maximum signal integrity and protects against mechanical damage, moisture, and chemical exposure in demanding industrial zones.

Hardware Parameters and Technical Specifications

This specific configuration of the PROXPAC XL system is tailored for large-scale industrial assets, featuring specialized standoff lengths and thread options for precise probe positioning.

• Model Number 330881-28-05-114-03-02

• Sensor Type 3300 XL 8 mm Proximity Transducer

• Probe Standoff Length 28 mm (Option -28)

• Probe Penetration 114 mm (Option -114)

• System Length 5.0 Meters (Option -05)

• Mounting Thread M20 x 1.5 (Option -03)

• Agency Approvals Multiple international certifications including ATEX/IECEx (Option -02)

• Output Signal Analog DC voltage proportional to shaft gap

• Linear Range 2.0 mm (80 mils)

• Operating Temperature -51°C to +177°C (-60°F to +351°F) for the probe tip

• Enclosure Rating NEMA 4X / IP66 (Weatherproof and corrosion-resistant)

Industrial Applications and Operational Use Cases

The PROXPAC XL 330881-28-05-114-03-02 is a staple in Turbine Supervisory Instrumentation (TSI), particularly for machines where internal mounting of proximitor sensors is impractical or hazardous.

• Large Steam and Gas Turbines Monitoring radial shaft vibration and axial thrust position while protecting the transducer system from high-pressure steam and oil mist.

• Hydroelectric Generators Ideal for vertical shaft monitoring where the housing provides a stable mounting platform and easy access for maintenance.

• Boiler Feed Pumps Providing high-accuracy vibration data in high-temperature environments where electronic components must be shielded.

• Refining and Chemical Processing Utilizing the ATEX/IECEx certified housing for safe displacement monitoring in explosive or corrosive atmospheres.

• Condition Monitoring Integration Seamlessly feeding dynamic shaft data into Bently Nevada 3500 series racks or 1900/65A monitors for automated protection logic.

The integrated design significantly reduces the "Mean Time To Repair" (MTTR) by allowing the entire assembly to be serviced or replaced as a single unit, ensuring consistent machinery uptime and reliable predictive maintenance data.