Technical Specifications Breakdown
Key parameters for the 21000-28-10-15-095-04-02 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 | 1.5 in (38 mm) = 15 |
| Probe Penetration | 095 = 9.5 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 |
Application Versatility in Rotating Machinery
Engineers rely on the 21000-28-10-15-095-04-02 to monitor shaft vibration and position in critical assets such as steam turbines, centrifugal compressors, and large pumps. The 3300 XL 8 mm probe provides precise measurements, while the robust aluminum and stainless steel construction withstands vibration, corrosion, and temperature extremes. The 1.0 m probe cable and 9.5 in probe penetration allow flexible installation in tight spaces.
Installation and Setup Guidance
During installation, ensure the mounting thread (3/4-14 NPT) is properly sealed and torqued to manufacturer specifications. The standoff adapter (1.5 in) must be correctly positioned to achieve the optimal probe gap. Use the provided 3/4-14 NPT plug for unused conduit ports to maintain enclosure integrity. Always follow the wiring diagram (reference drawing 140979 for non-incendive circuits) to maintain safety certifications.
Maintenance and Reliability
Periodically inspect the housing for signs of corrosion, damage, or loose fittings. Verify that the O-rings and thread seal remain intact to preserve the explosion-proof rating. Clean the exterior with a non-abrasive cloth and avoid exposing the assembly to chemicals that could degrade the aluminum or stainless steel.
Robust Protection for Critical Vibration Monitoring
When safeguarding rotating machinery, the housing assembly that secures your proximity probe is as vital as the probe itself. The Bently Nevada 21000-28-10-15-095-04-02 Proximity Probe Housing Assembly provides a rugged, certified enclosure designed for demanding industrial environments. This assembly ensures reliable, accurate vibration and position measurements while protecting the internal 3300 XL 8 mm probe from harsh conditions.

Engineered for Hazardous Environments
This housing assembly 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 and meets temperature classifications T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C. The assembly is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings, making it a trusted choice for refineries, chemical plants, and other process industries.

Selection Guide and Purchasing Advice
When ordering the 21000-28-10-15-095-04-02, confirm that your application requires the 3300 XL 8 mm probe with a 1.0 m cable and 9.5 in penetration. The 3/4-14 NPT mounting thread is mandatory when the standoff adapter length option is not 00. AutoDCSTech stocks this assembly as new and original in factory packing, ready for immediate deployment. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-28-10-15-095-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
