21000-34-10-20-030-04-02 | Bently Nevada Probe Housing

The Bently Nevada 21000-34-10-20-030-04-02 is a Probe Option for industrial control and automation applications.

Bently Nevada 21000-34-10-20-030-04-02 is a proximity probe housing assembly designed to protect and position a 3300 XL 8 mm probe in demanding industrial environments. The assembly includes a 1.0 m probe cable, a 2.0 in standoff adapter, and a 3.0 in probe penetration, making it a complete mounting solution for reliable vibration monitoring.

What Is the 21000-34-10-20-030-04-02?

This housing assembly is part of the Bently Nevada 21000 series, which provides a robust enclosure for reverse-mount proximity probes. The assembly consists of a dome cover, threaded conduit ports, a probe sleeve, O-rings, a reverse mount probe, a thread seal, and a 3/4-14 NPT plug. The body is made of aluminum with a 304 stainless steel sleeve, offering durability and corrosion resistance.

Key Specifications and Selection Details

• Probe Option: 34 = 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals
• Probe Cable Length: 1.0 m (39 in)
• Standoff Adapter: 2.0 in
• Probe Penetration: 3.0 in
• Fitting Option: 04 = One 3/4-14 NPT plug only
• Mounting Thread Option: -02 = 3/4-14 NPT
• Material: Aluminum body with 304 stainless steel sleeve
• Weight: 1.1 kg (2.4 lb) typical, without fittings
• Temperature Range (3300 XL 8mm Probe): -51°C to +177°C (-60°F to +351°F)

These specifications ensure the assembly meets the requirements for API 670 compliant installations and CSA Type 4 enclosures. For hazardous areas, select the appropriate approval option.

Addressing Vibration Monitoring Challenges

Engineers often face challenges with probe mounting integrity and environmental protection. This housing assembly solves these by providing a sealed enclosure that shields the probe from dust, moisture, and mechanical damage. The 3/4-14 NPT mounting thread and standoff adapter ensure secure installation on machinery such as turbines, compressors, and pumps. The 1.0 m cable length offers flexibility in routing, while the aluminum body with stainless steel sleeve resists corrosion in harsh conditions.

Installation and Maintenance Best Practices

Proper installation is critical for accurate vibration data. Ensure the probe penetration is set to 3.0 in and the standoff adapter is correctly positioned. Use the provided O-rings and thread seal to maintain the enclosure rating. Periodically inspect the housing for signs of wear or damage, and verify the probe gap according to the monitor system requirements. Always follow the manufacturer’s safety manual for hazardous area installations.

Frequently Asked Questions

What is the Bently Nevada unit used for?

The Bently Nevada unit is a proximity probe housing assembly that protects and mounts a 3300 XL 8 mm probe for vibration monitoring on industrial machinery.

What are the key specifications of This unit?

The Bently Nevada unit includes a 3300 XL 8 mm probe, 1.0 m cable, 2.0 in standoff adapter, 3.0 in probe penetration, and a 3/4-14 NPT mounting thread.

Is This unit suitable for hazardous areas?

The Bently Nevada unit offers selectable hazardous area approvals when ordered with the appropriate options. Please verify the specific approval required for your application.

What material is This unit housing made of?

The Bently Nevada unit features an aluminum body with a 304 stainless steel sleeve for durability and corrosion resistance.