Technical Specifications Breakdown
Key parameters for the 21000-28-10-15-030-04-02 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 | 1.0 m (39 in) |
| Standoff Adapter | 1.5 in (38 mm) |
| Probe Penetration | 3 in |
| Fitting Option | One 3/4-14 NPT plug only |
| Mounting Thread Option | 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight (typical) | 1.1 kg (2.4 lb) without fittings |
| Maximum (C) + (D) with visible probe | 17.0 in (43.18 cm) |
| Maximum (C) + (D) Dimension | 32.9 in (83.5 cm) |
Applications in Rotating Machinery Protection
The 3-inch probe penetration and 1.5-inch standoff adapter provide precise positioning for accurate vibration and displacement measurements. By maintaining probe integrity in harsh conditions, the 21000-28-10-15-030-04-02 helps operators avoid catastrophic failures and extend machinery life.
Installation and Setup Guidance
When installing the 21000-28-10-15-030-04-02, ensure the mounting thread (3/4-14 NPT) is properly sealed with the provided thread seal. The standoff adapter must be ordered if the length option is not 00. The probe cable length of 1.0 m (39 in) should be routed through conduit connections using the threaded ports. Verify that the dome cover is securely fastened to maintain the explosion-proof rating.
Maintenance and Reliability
Periodic inspection of the housing assembly is recommended to check for corrosion, seal integrity, and tightness of fittings. The aluminum body with 304 stainless steel sleeve offers resistance to corrosion in most industrial environments. For CSA-rated units, do not open the enclosure when an explosive atmosphere is present. Always follow site safety procedures.
Robust Protection for Critical Vibration Monitoring
In rotating machinery monitoring, the probe housing is the first line of defense against harsh environmental conditions. The Bently Nevada 21000-28-10-15-030-04-02 Proximity Probe Housing Assembly provides a rugged, explosion-proof enclosure designed to safeguard sensitive proximity probes in hazardous industrial areas. This assembly ensures reliable, uninterrupted vibration data collection, reducing unplanned downtime and maintenance costs.

Engineered for Hazardous Environments
The 21000 housing is certified by CSA for explosion-proof applications in North America, covering Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III. It is rated Enclosure Type 4, with temperature codes T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C. This makes the assembly suitable for refineries, chemical plants, and other volatile environments where safety is paramount.

Compatibility and Integration
The 21000 housing is designed to work with Bently Nevada 3300 XL 8 mm proximity probes and is fully compliant with API 670 Standard for externally mounted proximity probe housings. It can be integrated into existing Bently Nevada monitoring systems without modification.
Selection Guide and Purchasing Advice
When selecting a probe housing, consider the probe cable length, standoff adapter, and mounting thread requirements. The 21000-28-10-15-030-04-02 is a complete assembly with a 1.0 m cable, 1.5 in standoff, and 3/4-14 NPT mounting. 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 | 21000-28-10-15-030-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
