Bently Nevada 31000-28-05-00-059-02-02 English Proximity Probe Housing Assemblies

Description

The 31000-28-05-00-059-02-02 is a robust English Proximity Probe Housing Assembly designed for machinery protection systems where proximity probes require mounting through the machine case. This specific configuration features a 3300 XL 8 mm probe with a connector protector (Option 28), a 0.5 m probe cable (Option 05), and a 5.9 in (150 mm) probe penetration depth (Option 059). The assembly is engineered to provide environmental and mechanical protection for transducers used in radial vibration and axial position measurements.

The 31000 series housing is constructed from polyphenylene sulfide (PPS), a high-strength thermoplastic offering superior corrosion resistance, complemented by stainless steel components for long-term durability in industrial environments. This assembly facilitates external access to the probe and extension cable, allowing for gap adjustment or probe maintenance without requiring the disassembly of the machine case. It is fully compliant with the American Petroleum Institute (API) 670 Standard for externally mounted proximity probe housings.

Features

• Compatible with 3300 XL 8 mm proximity probes.
• Includes factory-installed connector protector to safeguard probe connections.
• PPS housing material ensures high chemical and corrosion resistance.
• Supports external access for gap adjustment and probe replacement.
• API 670 compliant for critical machinery monitoring applications.
• Configured with two 3/4-14 NPT conduit fittings and one plug for secure cable routing.
• Mounting thread type: 3/4-14 NPT.

Applications

This proximity probe housing assembly is primarily used for radial vibration and Keyphasor measurements in heavy rotating machinery, including:

• Steam and gas turbines
• Centrifugal compressors and pumps
• Electric motors and generators
• Reciprocating compressors
• Gearboxes and turbo-expanders

Ordering Information

Technical Specifications

Installation Guidelines

Ensure that the machine casing is properly affixed to the bearing housing to maintain accurate relative vibration signals. When installing, insert the outer sleeve into the machine case, then insert the probe sleeve and adjust the proximity probe gap to the specified range. Tighten the retaining nut to secure the housing. If hole plugs are used, tighten to 0.5 N-m (5 in-lbs). For probe penetration lengths exceeding 12 in (305 mm), additional sleeve support is required to prevent resonance.

Compliance and Certifications

The 31000/32000 Proximity Probe Housing Assembly is designed to meet industrial safety and performance standards. It is fully compliant with API 670 requirements for externally mounted proximity probe housings. When installed with an approved transducer system and appropriate barriers, this assembly is suitable for use in intrinsically safe hazardous area applications.