Bently Nevada 21000-34-05-15-056-04-02 Proximity Probe Housing Assembly

Description

The 21000-34-05-15-056-04-02 is an aluminum proximity probe housing assembly designed for the external mounting of proximity transducers. This specific configuration features a 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals (Option 34), a 0.5 m probe cable length (Option 05), a 1.5 in standoff adapter (Option 15), a 5.6 in probe penetration length (Option 056), conduit fittings consisting of a 3/4-14 NPT plug (Option 04), and a 3/4-14 NPT mounting thread (Option 02).

This all-metal assembly provides a secure, environmentally protected, and explosion-proof enclosure for 3300 series proximity probes. It ensures accurate measurement of shaft vibration and axial position by maintaining precise probe gap alignment. Compliant with API 670 standards, this housing is suitable for demanding industrial environments including power generation, petrochemical processing, and rotating machinery monitoring.

Features

• Option 34 Configuration: Includes 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Aluminum Body: Lightweight yet durable construction for fixed equipment protection.
• Probe Cable: 0.5 m lead length optimized for standard housing-to-terminal connections.
• Standoff Adapter: 1.5 in (38 mm) length for proper probe standoff distancing.
• Mounting: 3/4-14 NPT thread connection with plug fitting for secured installation.
• Explosion-Proof Rated: Designed to meet CSA requirements for hazardous area installations.

Applications

• Externally mounted proximity probe installation on heavy rotating machinery.
• Critical machinery protection where environmental shielding for the probe and cable is required.
• Hazardous area environments requiring explosion-proof certified enclosures (where CSA requirements apply).
• Applications requiring compliance with API 670 standards for machinery vibration and position monitoring.

Ordering Information

Technical Specifications

Installation Guidelines

Ensure the housing is mounted securely to the machine case using the specified 3/4-14 NPT thread. When installing probe penetration lengths, verify the gap settings to maintain linear measurement ranges. For lengths exceeding 300 mm (12 in), auxiliary sleeve support is required to minimize vibration-induced resonance. Always route cabling through the conduit ports using appropriate seals to maintain the explosion-proof rating of the assembly.

Compliance and Certifications

The 21000 series housings are certified by CSA for explosion-proof applications in Class I, Divisions 1 and 2, Groups C and D, and Class II, Divisions 1 and 2, Groups E, F, and G. They are fully compliant with the American Petroleum Institute (API) 670 Standard.