Bently Nevada 31000-29-10-20-025-02-02 English Proximity Probe Housing Assemblies

Description

The 31000-29-10-20-025-02-02 is a 31000 English Proximity Probe Housing Assembly designed for secure, external machinery mounting of eddy-current proximity probes. This specific configuration features Option 29 (3300 XL 8 mm probe with connector protector), Option 10 (1.0 m probe cable length), Option 20 (20 mm standoff adapter length), Option 025 (25 mm probe penetration depth), Option 02 (two M25 fittings), and Option 02 (3/4-14 NPT mounting thread).

These housings facilitate external access to the proximity probe and extension cable, allowing for gap adjustment or probe replacement without requiring the disassembly of the machine case. Constructed from polyphenylene sulfide (PPS), this assembly offers high-strength thermoplastic properties with excellent corrosion resistance, making it well-suited for demanding industrial environments. It complies with API 670 standards for externally mounted proximity probe housings and is intended for use in vibration and position monitoring applications.

Features

• Option 29: Includes 3300 XL 8 mm proximity probe with connector protector for enhanced durability.
• Option 10: 1.0 m (39 in) probe cable length.
• Option 20: 20 mm standoff adapter length for precise probe positioning.
• Option 025: 25 mm probe penetration depth.
• Option 02 (Fittings): Two M25 fittings provided for cable management.
• Option 02 (Thread): 3/4-14 NPT mounting thread interface.
• Material: Polyphenylene sulfide (PPS) body with corrosion-resistant stainless steel components.
• Standards: Fully compliant with API 670 requirements.

Applications

The 31000 housing assembly is used extensively in rotating machinery protection for industries such as power generation, petrochemical processing, and oil and gas. It is typically applied for:

• Radially mounted transducers for shaft vibration monitoring.
• Keyphasor measurement setups.
• Applications requiring external, non-invasive probe maintenance and adjustment.

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the machine casing is properly affixed to the bearing when measuring radial vibration to maintain signal accuracy.
• When using hole plugs, tighten the hole plug nuts to 0.5 N-m (5 in-lbs).
• For probe penetration lengths between 25 mm and 50 mm, consider counter-boring the machine case if side view or rear view effects interfere with signal integrity.
• Follow the standard procedure: install outer sleeve, adjust probe gap, fit housing, and secure with retainer/nut before re-connecting cables.

Compliance and Certifications

Compliant with API 670 standards. Suitable for use in hazardous areas when installed with an approved transducer system and appropriate I.S. barriers.