21000-34-10-20-039-04-02 | Bently Nevada 1.0 m Probe Housing Assembly

What Makes the 21000-34-10-20-039-04-02 Essential for Vibration Monitoring?

When critical machinery demands precise proximity measurement in hazardous environments, the 21000-34-10-20-039-04-02 delivers a robust solution. This Bently Nevada proximity probe housing assembly combines an aluminum body with a 304 stainless steel sleeve, ensuring durability in demanding industrial settings. With a 1.0 m probe cable length, 2.0 in standoff adapter, and 3.9 in probe penetration, it meets API 670 standards for externally mounted housings.

Key Features and Technical Specs of the 21000-34-10-20-039-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 2.0 in.
• Probe Penetration: 3.9 in.
• Fitting Option: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT (required when standoff adapter is not -00).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A distinctive feature is the selectable hazardous area approval for the 3300 XL 8 mm probe, which enables use in intrinsically safe applications when paired with the aluminum housing.

Real-World Applications and Use Cases

In the oil and gas industry, the 21000-34-10-20-039-04-02 monitors shaft vibration in compressors and turbines. Similarly, in petrochemical plants, it provides reliable proximity sensing for pumps and motors. Moreover, its CSA Type 4 enclosure rating makes it suitable for outdoor installations exposed to dust and water.

Installation and Setup Guide

Begin by verifying the mounting thread (3/4-14 NPT) matches the conduit or standoff adapter. Next, ensure the probe cable length of 1.0 m is sufficient for the routing path. Then, secure the housing using the provided 3/4-14 NPT plug fitting. Finally, confirm the probe penetration of 3.9 in aligns with the target measurement gap. For explosion-proof applications, order the appropriate CA version with E:00, E:01, E:02, or E:04 options.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to maintain the CSA Type 4 enclosure integrity. Additionally, verify the probe cable and connector protector are free from damage. By following these steps, you extend the service life of the 21000-34-10-20-039-04-02 and reduce unplanned downtime.

Compatibility and Integration

The 21000-34-10-20-039-04-02 integrates with Bently Nevada monitoring systems that accept 3300 XL 8 mm proximity probes. It also complies with API 670 standards, ensuring compatibility with standard vibration monitoring architectures.

Common Questions About the 21000-34-10-20-039-04-02

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

A: The probe cable length is 1.0 m (39 in).

Q: Is this housing assembly rated explosion proof?

A: Only CA versions of the housing are rated explosion proof by CSA when ordered with E:00, E:01, E:02, or E:04 options. The standard version is not explosion proof.

Q: What material is the housing body made of?

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

Q: What is the maximum (C) + (D) dimension?

A: The maximum (C) + (D) dimension is 32.9 in (83.5 cm).

Q: What mounting thread option is required?

A: The mounting thread option is 3/4-14 NPT, which must be ordered if the standoff adapter length option is not -00.

Product Support and Availability

The 21000-34-10-20-039-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for ordering assistance or technical inquiries.