Bently Nevada 21000-28-05-20-050-03-02 Proximity Probe Housing Assembly

Technical Specifications Breakdown

Key parameters for the 21000-28-05-20-050-03-02 are listed below for quick reference:

Industry Applications for the Bently Nevada 21000 Housing

This housing assembly is designed for external mounting on rotating equipment such as compressors, turbines, and pumps. The 3300 XL 8 mm probe provides reliable shaft vibration and position measurements. The CSA Type 4 enclosure rating ensures protection in wet or dusty environments, making it suitable for refineries, chemical plants, and power generation facilities.

Installation Considerations

When installing the 21000-28-05-20-050-03-02, ensure the mounting thread (3/4-14 NPT) matches your machine port. The included fitting kit provides one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches. The 0.5 m probe cable requires careful routing to avoid damage. For hazardous area installations, follow the provided drawing 140979 for non-incendive circuit connections.

Maintenance and Reliability

Periodically inspect the housing for corrosion or damage, especially in harsh environments. The aluminum body with 304 stainless steel sleeve offers good corrosion resistance. Verify that all O-rings and seals remain intact to maintain the explosion-proof rating. The assembly is designed for long-term reliability with minimal maintenance.

Selecting the Right Proximity Probe Housing Assembly

When protecting rotating machinery, the housing assembly is as critical as the probe itself. The Bently Nevada 21000-28-05-20-050-03-02 offers a robust solution for vibration monitoring in hazardous environments. This guide helps you evaluate its specifications against your application requirements.

Compatibility and Standards

The 21000 housing is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. It is certified by CSA for explosion-proof applications in Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III. The enclosure is rated Type 4. Temperature ratings are T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C. The assembly also complies with RoHS Directive 2011/65/EU.

Purchasing Advice

Before ordering, verify the probe cable length, standoff adapter, and probe penetration match your machine geometry. The 21000-28-05-20-050-03-02 includes a 0.5 m cable, 2 in standoff, and 5 in penetration. Contact AutoDCSTech for availability and lifecycle status. All units are new and original in factory packing with a 12-month warranty.

Please verify current lifecycle status and availability with AutoDCSTech before ordering.