21000-34-05-30-065-03-02 | Bently Nevada 0.5m Probe Housing Assembly

Introduction: Solving Vibration Monitoring Challenges with the 21000-34-05-30-065-03-02

When critical rotating machinery demands precise and reliable vibration measurement, the 21000-34-05-30-065-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is engineered for hazardous area applications, offering explosion-proof certification and CSA Type 4 enclosure rating. With a 0.5m probe cable and 3.0in standoff adapter, it delivers consistent performance in demanding industrial environments.

Key Features and Technical Specifications of the 21000-34-05-30-065-03-02

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in) for flexible installation.
• Standoff Adapter: 3.0 in for precise positioning.
• Probe Penetration: 6.5 in for deep mounting.
• Fittings: Includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for multiple cable sizes.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 13.5 in (34.3 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A distinctive feature is the 0.5m probe cable, which simplifies routing in tight spaces while maintaining signal integrity. This assembly is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.

Real-World Applications and Use Cases

In petrochemical plants and refineries, the 21000-34-05-30-065-03-02 excels at monitoring shaft vibration and position in compressors, turbines, and pumps. Its CSA explosion-proof rating makes it ideal for Class I, Division 1 hazardous areas. For example, a refinery using this assembly can reduce unplanned downtime by detecting early bearing wear. Additionally, the API 670 compliance ensures seamless integration into existing safety systems.

Installation and Setup Guidance

Mount the 21000-34-05-30-065-03-02 using the 3/4-14 NPT thread after selecting the appropriate standoff adapter length. Ensure the probe sleeve penetrates 6.5 in into the housing. Use the included fittings—3/4-14 NPT plug and reducer—to seal conduit connections. The cable seal grip accommodates cable diameters from 1/8 to 3/8 inches. Always follow Bently Nevada's installation manual for torque specifications and gap settings.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to maintain the explosion-proof integrity. Verify that the probe cable is not kinked or damaged. The aluminum body with stainless steel sleeve resists corrosion in harsh environments. By following a periodic inspection schedule, you extend the service life of the 21000-34-05-30-065-03-02 and avoid costly replacements.

Compatibility and Integration

This housing assembly works with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It is designed for use with standard conduit connections and can be integrated into existing vibration monitoring networks. For specific system compatibility, consult the official Bently Nevada documentation.

Frequently Asked Questions about the 21000-34-05-30-065-03-02

Q: What is the probe cable length of the 21000-34-05-30-065-03-02?

A: The probe cable length is 0.5 m (20 in).

Q: What mounting thread does this assembly use?

A: It uses a 3/4-14 NPT mounting thread.

Q: Is the 21000-34-05-30-065-03-02 suitable for hazardous areas?

A: Yes, it has CSA explosion-proof approval and is rated for hazardous areas.

Q: What is the weight of this housing assembly?

A: The typical weight is 1.1 kg (2.4 lb) without fittings.

Q: What material is the housing made of?

A: The body is aluminum with a 304 stainless steel sleeve.

Product Support and Availability

The 21000-34-05-30-065-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead time. We provide original factory-packed units with full warranty support.