31000-28-05-00-024-01-02 Bently Nevada Explosion-Proof Probe Housing Mount

Brief Product Summary

The Bently Nevada 31000-28-05-00-024-01-02 housing assembly provides a robust, weather-tight enclosure for proximity probes, facilitating external installation and adjustment on rotating machinery. It eliminates the need for internal mounting, thereby simplifying sensor maintenance and reducing operational downtime.

Technical Overview and Functional Description

The Bently Nevada 31000-28-05-00-024-01-02 housing assembly serves as a primary mounting interface for proximity transducers within Turbine Supervisory Instrumentation (TSI) systems. This specific model utilizes a combination of polyphenylene sulfide (PPS) and stainless steel to ensure high chemical resistance and mechanical strength. By housing the probe externally, the assembly allows technicians to replace sensors or calibrate voltage gaps while the machine remains in service, providing a significant advantage for continuous-process industries.

This assembly integrates seamlessly with the 3300 XL 8mm proximity probe series. It features a standoff adapter and a 3/4-14 NPT conduit connection to maintain environmental sealing and electrical shielding. Because the design complies with API 670 standards, it meets the rigorous requirements for vibration, axial position, and speed monitoring in critical sectors such as oil and gas, power generation, and chemical processing.

Furthermore, the 31000-28-05-00-024-01-02 supports hazardous area installations when paired with certified intrinsic safety barriers or galvanic isolators. The housing effectively protects the probe lead and connectors from moisture, oil, and physical impact, ensuring long-term signal stability in the most demanding industrial climates.

Key Technical Characteristics

• Advanced Material Engineering: Utilizes PPS thermoplastic and stainless steel for superior resistance to corrosion and high-temperature environments.
• External Accessibility: Enables the adjustment of probe-to-target gaps from outside the machine casing, enhancing safety and efficiency.
• Conduit Compatibility: Incorporates standard 3/4-14 NPT fittings to accommodate industrial wiring and protective conduit systems.
• API 670 Standardized: Built to meet global industry specifications for machinery protection and transducer mounting.
• Environmental Sealing: Provides a rugged, explosion-proof, and weather-resistant enclosure for sensitive electronic sensors.

Application Guidelines

Engineers generally deploy the 31000-28-05-00-024-01-02 in applications where internal probe mounting is restricted by space or accessibility. To ensure a proper seal, installers should apply appropriate thread sealant to the NPT connections. During setup, the external adjustment feature allows the technician to rotate the probe within the housing to achieve the desired DC Gap voltage (typically -10.0 Vdc for 3300 XL systems) without opening the machine bearing housing. This model is particularly effective for monitoring centrifugal compressors, steam turbines, and large motors where environmental protection of the sensor is paramount.

Specifications Table