21000-34-00-20-066-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-00-20-066-04-02 Proximity Probe Housing Assembly

When you need robust vibration monitoring in hazardous areas, the 21000-34-00-20-066-04-02 from Bently Nevada provides a proven solution. This 21000 series proximity probe housing assembly combines an aluminum body with a 304 stainless steel sleeve for durability. It is designed for use with 3300 XL 8 mm probes and includes a connector protector. The assembly supports selectable hazardous area approvals, making it suitable for demanding industrial environments.

Key Features and Technical Specifications of the 21000-34-00-20-066-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Standoff Adapter: 2.0 inches.
• Probe Penetration: 6.6 inches.
• Fitting Option: One 3/4-14 NPT plug.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Approvals: CSA Type 4 enclosure, explosion-proof for hazardous areas; compliant with API 670 Standard.

The unique 6.6-inch probe penetration allows installation in deep bearing housings, ensuring accurate proximity measurements even in confined spaces.

Applications and Use Cases for the 21000-34-00-20-066-04-02

This housing assembly excels in rotating machinery monitoring, such as turbines, compressors, and pumps. Its CSA explosion-proof rating makes it ideal for oil and gas refineries, chemical plants, and other hazardous locations. The API 670 compliance ensures it meets industry standards for externally mounted proximity probes. In addition, the selectable hazardous area approvals allow flexibility for intrinsically safe installations.

Installation and Setup Guide

Mount the 21000-34-00-20-066-04-02 using the 3/4-14 NPT thread for secure attachment. The standoff adapter of 2.0 inches provides proper probe gap adjustment. When installing, ensure the probe sleeve penetrates 6.6 inches into the housing. Use the included 3/4-14 NPT plug for unused conduit ports. For explosion-proof installations, order CA version housings with appropriate fitting options (E:00, E:01, E:02, or E:04).

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to maintain enclosure integrity. The aluminum body and stainless steel sleeve resist corrosion in harsh environments. Periodically verify the probe connector and cable connections are secure. Following these steps extends service life and reduces unplanned downtime, aligning with a cost-benefit approach to asset protection.

Compatibility and Integration

The 21000-34-00-20-066-04-02 works with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It integrates with vibration monitoring racks and data acquisition units for real-time machinery health analysis. For intrinsically safe applications, pair with hazardous area approved probes.

Frequently Asked Questions about the 21000-34-00-20-066-04-02

What is the probe penetration length of the 21000-34-00-20-066-04-02?

The probe penetration is 6.6 inches, allowing deep installation in bearing housings.

Is the 21000-34-00-20-066-04-02 suitable for hazardous areas?

Yes, it is rated explosion-proof by CSA and supports selectable hazardous area approvals for intrinsically safe applications.

What mounting thread does this housing use?

It uses a 3/4-14 NPT mounting thread, which must be ordered unless the standoff adapter option is -00.

What materials are used in the 21000-34-00-20-066-04-02?

The body is aluminum with a 304 stainless steel sleeve, providing corrosion resistance and durability.

Does the 21000-34-00-20-066-04-02 include a probe cable?

No, the probe cable option is -00, meaning probe cable is not required with this assembly.

Product Support and Availability

The Bently Nevada 21000-34-00-20-066-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead time. We provide new and original factory-packed units with full warranty support.