21000-28-05-15-028-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-28-05-15-028-04-02

When unplanned downtime threatens production targets, the 21000-28-05-15-028-04-02 from Bently Nevada provides a robust solution for critical machinery protection. This proximity probe housing assembly, part of the 21000 series, is designed for externally mounted probes in hazardous environments. With a 0.5 m (20 in) probe cable and a 2.8 in probe penetration, it delivers precise vibration and position measurements. This assembly helps reduce maintenance costs by enabling early fault detection.

Key Features and Technical Specs of the 21000-28-05-15-028-04-02

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in) for flexible installation.
• Standoff Adapter: 1.5 in (38 mm) for precise gap setting.
• Probe Penetration: 2.8 in to accommodate various mounting depths.
• Fitting Option: One 3/4-14 NPT plug for conduit connection.
• Mounting Thread: 3/4-14 NPT for secure installation.
• Material: Aluminum body with 304 stainless steel sleeve for durability.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

These specs ensure reliable performance in demanding industrial settings. The 8 mm probe offers high sensitivity, while the 0.5 m cable reduces signal loss. This combination lowers total cost of ownership by minimizing false alarms and extending equipment life.

Real-World Applications for the 21000-28-05-15-028-04-02

In rotating machinery such as turbines and compressors, the 21000-28-05-15-028-04-02 monitors shaft vibration and position. It is ideal for hazardous areas requiring explosion-proof enclosures. For example, in a petrochemical plant, this housing assembly helps detect bearing wear early, preventing costly catastrophic failures. Its CSA Type 4 enclosure ensures reliable operation in harsh environments.

Installation and Setup Guide

Mount the housing using the 3/4-14 NPT thread for a secure fit. Connect the probe cable and tighten the fitting option plug. Ensure the standoff adapter is set to 1.5 in for proper gap. Verify all O-rings are seated to maintain the explosion-proof seal. Follow the manufacturer's manual for wiring details to avoid signal interference.

Maintenance and Reliability Tips

Inspect the housing assembly periodically for signs of wear or corrosion. Check the cable and connectors for damage. Clean the exterior with a dry cloth only. Regular inspection reduces unexpected downtime and extends service life, maximizing return on investment.

Compatibility and Integration

The 21000-28-05-15-028-04-02 integrates with Bently Nevada monitoring systems and third-party vibration analyzers. It is fully compliant with API 670 Standard for externally mounted proximity probes. This compatibility simplifies system upgrades and reduces integration costs.

FAQs about the 21000-28-05-15-028-04-02

Q: What is the probe cable length for this model?

A: The probe cable length is 0.5 m (20 in).

Q: What is the probe penetration depth?

A: The probe penetration is 2.8 in.

Q: Is this housing assembly certified for hazardous areas?

A: Yes, it is CSA certified for explosion-proof applications in Class I Divisions 1 and 2 Groups C and D, and Class II Divisions 1 and 2 Groups E, F, and G.

Q: What materials are used in the construction?

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

Q: What is the typical weight of the assembly?

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

Product Support and Availability

The 21000-28-05-15-028-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We provide 12 months factory warranty on all new and original products.