21000-28-05-00-028-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-28-05-00-028-04-02

When rotating machinery requires precise vibration monitoring, the 21000-28-05-00-028-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly supports critical asset protection in industrial environments. It combines an aluminum body with a 304 stainless steel sleeve for durability. The unit includes a 3300 XL 8 mm probe with selectable hazardous area approvals. Engineers trust this assembly for consistent performance in demanding applications.

Key Features of the 21000-28-05-00-028-04-02

• Compatible with 3300 XL 8 mm proximity probes for accurate displacement measurement.
• Probe cable length of 0.5 m (20 in) offers flexible installation options.
• Standoff adapter length option set to 00, meaning no standoff adapter is included.
• Probe penetration depth of 2.8 in (Option D) allows precise positioning.
• Includes one 3/4-14 NPT plug for conduit sealing.
• Mounting thread option of 3/4-14 NPT ensures secure attachment.
• Aluminum body with 304 stainless steel sleeve resists corrosion and wear.
• Typical weight of 1.1 kg (2.4 lb) without fittings simplifies handling.

Applications and Use Cases for the 21000-28-05-00-028-04-02

This housing assembly excels in monitoring shaft vibration and position in turbines, compressors, and pumps. It meets the American Petroleum Institute's API 670 Standard for externally mounted proximity probes. The CSA Type 4 enclosure rating makes it suitable for hazardous locations. Additionally, its explosion-proof design supports intrinsically safe applications. Industries such as oil and gas, power generation, and petrochemical benefit from its reliability.

Installation and Setup Guidance

Mounting the 21000-28-05-00-028-04-02 requires careful attention to probe penetration depth. For depths between 1.0 and 2.0 inches, counter boring the machine case may reduce side view effects. If the combined C plus D dimension exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range for Option D is 13 mm (±0.5 in). Always follow Bently Nevada's installation manual for optimal results.

Maintenance and Reliability

Regular inspection of the housing assembly ensures long-term performance. Check O-rings and thread seals periodically for wear. The aluminum and stainless steel construction resists environmental stress. This design minimizes downtime and extends service life. For maximum reliability, verify that all fittings remain tight after installation.

Compatibility and Integration

The 21000-28-05-00-028-04-02 works with Bently Nevada monitoring systems and compatible vibration data collectors. It supports both standard and intrinsically safe proximity probes. The 3/4-14 NPT mounting thread integrates easily with existing conduit systems. This assembly pairs well with the 24701 stainless steel housing for diverse application needs.

Frequently Asked Questions

What is the probe cable length for the 21000-28-05-00-028-04-02?

The probe cable length is 0.5 m (20 in), as specified by suffix code 05.

What mounting thread does this assembly use?

The mounting thread option is 3/4-14 NPT, required when no standoff adapter is used.

Is the 21000-28-05-00-028-04-02 suitable for hazardous areas?

Yes, it supports selectable hazardous area approvals and is CSA certified as explosion proof.

What is the typical weight of this housing assembly?

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

Product Support and Availability

The 21000-28-05-00-028-04-02 is available as new and original in factory packing from Petro Auto Tech. It includes a 12-month factory warranty. Contact Petro Auto Tech for current lifecycle status and ordering details.