Technical Specifications Breakdown
Key parameters for the 21000-28-05-00-064-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 28 3300 XL 8 mm probe, selectable hazardous area approvals |
| Probe Cable Length | 05 0.5 m (20 in) |
| Standoff Adapter | No standoff adapter = 00 |
| Probe Penetration | 064 = 6.4 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 (typical, without fittings) | 1.1 kg (2.4 lb) |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 mm) |
Industry Applications for Enhanced Machinery Protection
The CSA explosion-proof certification (Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G) makes it suitable for environments with flammable gases or combustible dusts. By integrating this assembly with a compatible Bently Nevada monitoring system, operators gain reliable, real-time data on shaft vibration and position, enabling predictive maintenance and preventing catastrophic failures.

Installation and Setup Guidance
When installing the 21000-28-05-00-064-04-02, ensure the mounting thread (3/4-14 NPT) is properly engaged and sealed to maintain the explosion-proof integrity. The assembly includes a dome cover, threaded ports for conduit connections, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. For intrinsically safe applications, order the appropriate hazardous area approved probe. Always follow the manufacturer's installation manual and local electrical codes. The maximum (C) + (D) dimension of 13.5 in (34.3 mm) should be considered during probe positioning.
Maintenance and Reliability
Periodically inspect the housing assembly for signs of corrosion, damage, or loose fittings. The aluminum body with 304 stainless steel sleeve provides resistance to environmental stress. Verify that all O-rings and seals remain intact to preserve the CSA Type 4 enclosure rating. No disassembly of the probe or internal components is required during routine inspections.
Robust Protection for Critical Vibration Monitoring
In rotating machinery monitoring, the housing assembly that secures the proximity probe is as critical as the probe itself. The Bently Nevada 21000-28-05-00-064-04-02 provides a rugged, explosion-proof enclosure designed for demanding industrial environments. This assembly ensures reliable, accurate vibration and position measurements, reducing unplanned downtime and maintenance costs.

Compatibility and Integration
This housing is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. It is designed for use with Bently Nevada 3300 XL 8 mm proximity probes and is available with CSA approvals for hazardous areas. The assembly supports both North American (CA21000) and international (21000) configurations. For non-North American end users, order the standard 21000 housing.
Selection Guide and Purchasing Advice
When selecting a housing assembly, consider the probe cable length, probe penetration, and mounting thread requirements. The 21000-28-05-00-064-04-02 configuration includes a 0.5 m cable, 6.4 in probe penetration, and a 3/4-14 NPT mounting thread with one plug. AutoDCSTech offers this unit as new and original in factory packing with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-28-05-00-064-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
