21000-34-10-20-065-04-02 | Bently Nevada 8 mm Proximity Probe Housing Assembly

Introduction to the 21000-34-10-20-065-04-02

When reliable vibration monitoring is critical, the 21000-34-10-20-065-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for industrial environments where precise shaft displacement measurement is essential. With an aluminum body and 304 stainless steel sleeve, it withstands harsh conditions while maintaining accuracy.

Key Features and Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector for selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Standoff Adapter: 0.2 in for precise positioning.
• Probe Penetration: 6.5 in for deep mounting requirements.
• Fitting Option: One 3/4-14 NPT plug for conduit connection.
• Mounting Thread: 3/4-14 NPT for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for durability.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) for cable and probe assembly.

A standout feature is the 3300 XL 8 mm probe with connector protector, which simplifies maintenance by allowing quick probe replacement without rewiring. This reduces downtime during routine inspections.

Industry Applications

Maintenance engineers in power generation, oil and gas, and petrochemical plants rely on the 21000-34-10-20-065-04-02 for critical machinery protection. It monitors shaft vibration in turbines, compressors, and pumps, helping prevent unplanned outages. For example, in a refinery, this housing assembly ensures early detection of bearing wear, extending equipment life and reducing repair costs.

Installation Guide

Mount the housing using the 3/4-14 NPT thread for a secure fit. Ensure the probe cable length of 1.0 m is sufficient for your routing path. Use the provided 3/4-14 NPT plug for conduit connections to maintain environmental sealing. For hazardous areas, select the appropriate probe option with connector protector. Always follow Bently Nevada's installation manual for torque specifications and gap settings.

Maintenance and Reliability

Regularly inspect the O-rings and thread seal for wear to maintain the CSA Type 4 enclosure rating. The aluminum and stainless steel construction resists corrosion, but periodic cleaning with a dry cloth is recommended. Verify probe cable integrity and connector tightness during scheduled shutdowns. This proactive approach minimizes false readings and extends service life.

Compatibility and Integration

The 21000-34-10-20-065-04-02 integrates with Bently Nevada monitoring systems and third-party vibration analyzers. It is fully compliant with API 670 Standard for externally mounted proximity probe housings. For intrinsically safe applications, pair it with hazardous area approved proximity probes. Contact Petro Auto Tech for compatibility with your existing setup.

FAQs about the 21000-34-10-20-065-04-02

Q: What is the maximum cable length for this housing assembly?

A: The probe cable length is 1.0 m (39 in), as specified in the ordering information.

Q: Is this housing rated for explosion-proof environments?

A: Yes, when ordered with the appropriate options (E:00, E:01, E:02, or E:04), the CA version is CSA rated explosion-proof.

Q: What is the weight of the 21000-34-10-20-065-04-02?

A: It weighs 1.1 kg (2.4 lb) typical, without fittings.

Q: Can I use this with a 3300 XL 8 mm probe?

A: Yes, the probe option 34 specifies a 3300 XL 8 mm probe with connector protector.

Q: What is the mounting thread size?

A: The mounting thread is 3/4-14 NPT, required when the standoff adapter length option is not -00.

Product Support and Availability

The 21000-34-10-20-065-04-02 is in stock and ready to ship from Petro Auto Tech. We offer new and original factory-packed units with a 12-month warranty. Contact our team for technical support or ordering assistance.