21000-34-05-20-028-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

Introduction to the 21000-34-05-20-028-04-02

When hazardous area requirements demand reliable vibration monitoring, the 21000-34-05-20-028-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for externally mounted probes in industrial environments. With a 0.5 m probe cable and 2.0 in standoff adapter, it delivers precise measurements while maintaining safety in explosive atmospheres.

Key Features and Technical Specs of the 21000-34-05-20-028-04-02

• Probe Cable Length: 0.5 m (20 in) for flexible installation near machinery.
• Standoff Adapter: 2.0 in ensures proper probe positioning.
• Probe Penetration: 2.8 in for accurate gap measurement.
• Fitting Option: One 3/4-14 NPT plug for conduit sealing.
• 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 Dimension (C+D): 13.5 in (34.3 cm) with visible probe P/N and S/N not visible.

The 21000-34-05-20-028-04-02 includes a dome cover, threaded ports, probe sleeve, O-rings, reverse mount probe, thread seal, optional conduit fittings, and optional standoff adapter. Its CSA Type 4 enclosure rating ensures protection against dust and water ingress.

Applications and Use Cases

In oil and gas refineries, the 21000-34-05-20-028-04-02 monitors rotating machinery like pumps and compressors in hazardous areas. Similarly, chemical plants use it for vibration analysis on critical equipment. Its CSA explosion-proof certification makes it suitable for Class I, Division 1 environments. Moreover, power generation facilities rely on this housing for turbine shaft displacement measurements.

Installation and Setup Guide

Mount the 21000-34-05-20-028-04-02 using the 3/4-14 NPT thread for a secure fit. Ensure the standoff adapter is set to 2.0 in for optimal probe gap. Connect the 0.5 m cable to the proximity probe system, verifying the probe penetration of 2.8 in aligns with the target surface. Use the provided 3/4-14 NPT plug to seal unused conduit ports. Always follow Bently Nevada's installation manual for hazardous area compliance.

Maintenance and Reliability

Regularly inspect the 21000-34-05-20-028-04-02 for signs of wear on the aluminum body and stainless steel sleeve. Check the O-rings and thread seal for integrity to maintain explosion-proof rating. Since the housing is CSA certified, periodic verification of the enclosure seal is recommended. This proactive approach extends service life and reduces unplanned downtime.

Frequently Asked Questions about the 21000-34-05-20-028-04-02

Q: What is the cable length of the 21000-34-05-20-028-04-02?

A: The probe cable length is 0.5 m (20 in) as specified in the ordering information.

Q: Is the 21000-34-05-20-028-04-02 rated for hazardous areas?

A: Yes, it is available with CSA explosion-proof approvals for hazardous areas when ordered with appropriate options.

Q: What is the weight of the 21000-34-05-20-028-04-02?

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

Q: What materials are used in the 21000-34-05-20-028-04-02?

A: The housing has an aluminum body with a 304 stainless steel sleeve.

Q: What is the mounting thread size for the 21000-34-05-20-028-04-02?

A: The mounting thread option is 3/4-14 NPT.

Product Support and Availability

The 21000-34-05-20-028-04-02 is available as a new and original factory-packed unit from Petro Auto Tech. In stock and ready to ship, it comes with a 12-month factory warranty. Contact Petro Auto Tech for lifecycle status and ordering assistance.