Technical Specifications Breakdown
Key parameters for the 21000-28-10-30-018-04-02 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 | 10 1.0 m (39 in) |
| Standoff Adapter | 30=3 in |
| Probe Penetration | 018=1.8 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 | 1.1 kg (2.4 lb) typical, without fittings |
| Certification | CSA explosion-proof; RoHS compliant |
Industry Applications for Vibration Monitoring
In petrochemical plants, it supports API 670 standards for externally mounted probes on critical rotating equipment. For power generation, the CSA Type 4 enclosure ensures reliable operation in wet or dusty environments. The 21000-28-10-30-018-04-02 is also suited for gas compression stations where hazardous area approvals are mandatory.

Installation and Setup Guidance
When installing the 21000-28-10-30-018-04-02, ensure the mounting thread (3/4-14 NPT) is properly sealed to maintain the explosion-proof rating. The standoff adapter length of 3 in and probe penetration of 1.8 in must be verified against the machine casing dimensions. Use the provided O-rings and thread seal to prevent leakage. The maximum cable length from probe tip to connector is 32.9 in (83.5 cm) for the 1.0 m cable option.
Maintenance and Reliability
Periodically inspect the housing assembly for signs of corrosion or damage, especially in harsh environments. The aluminum body with 304 stainless steel sleeve offers good resistance to most industrial atmospheres. Verify that all conduit fittings remain tight and that the dome cover seals properly. No internal disassembly is required for routine checks.
Robust Protection for Critical Vibration Monitoring
In rotating machinery monitoring, the housing assembly is the first line of defense for sensitive proximity probes. The Bently Nevada 21000-28-10-30-018-04-02 provides a rugged, certified enclosure designed to maintain probe integrity in hazardous environments. This component is essential for reliable vibration measurement in compressors, turbines, and pumps.

Compatibility and Integration
The 21000-28-10-30-018-04-02 is designed to work with Bently Nevada 3300 XL 8 mm proximity probes. It is fully compliant with API 670 for externally mounted housings. For intrinsically safe applications, order hazardous area approved probes with this housing. The assembly is certified for Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III, with temperature codes T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C.
Selection Guide and Purchasing Advice
When selecting a replacement or new housing, verify that the suffix codes match your probe and installation requirements. The 21000-28-10-30-018-04-02 is available new and in original factory packing from AutoDCSTech. Our team can help you confirm compatibility with your existing Bently Nevada monitoring system. Contact us for lifecycle status and availability before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-28-10-30-018-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
