Technical Specifications Breakdown
Key parameters for the 21000-34-05-15-050-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 3300 XL 8 mm probe with connector protector |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | 1.5 in |
| Probe Penetration | 5.0 in |
| Mounting Thread | 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
| Temperature Range (3300 XL 8mm Probe) | -51°C to +177°C (-60°F to +351°F) |
Designed for Hazardous Area Applications
The 21000-34-05-15-050-03-02 is rated explosion proof and carries Canadian Standards Association (CSA) approvals for hazardous areas. The aluminum housing with a 304 stainless steel sleeve provides corrosion resistance and mechanical integrity.

Installation and Setup Guidance
Mount the housing using the 3/4-14 NPT thread option. The fitting kit includes 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 diameters from 1/8 to 3/8 inches. Ensure the probe cable length of 0.5 m is accounted for during routing. The maximum (C) + (D) dimension is 13.5 in (34.3 cm). Verify that the probe serial number is not visible after assembly.
Maintenance and Reliability
Periodically inspect the housing for signs of corrosion or mechanical damage. Check the O-rings and thread seal for integrity during routine maintenance. The assembly is designed for long-term service in demanding environments, but regular visual inspections help ensure continued reliability.
Robust Protection for Critical Vibration Monitoring
Industrial rotating machinery demands reliable vibration monitoring to prevent catastrophic failures. The Bently Nevada 21000-34-05-15-050-03-02 Proximity Probe Housing Assembly provides a rugged, explosion-proof enclosure for the 3300 XL 8 mm probe, ensuring accurate shaft displacement measurements in the harshest environments. This assembly is engineered to meet API 670 standards for externally mounted proximity probes, offering a complete solution for safeguarding turbines, compressors, and pumps.

Compatibility and Integration
This housing assembly is compatible with Bently Nevada 3300 XL 8 mm proximity probes and can be ordered with hazardous area approved probes for intrinsically safe applications. The CSA Type 4 enclosure rating ensures protection against water and dust ingress. For integration with monitoring systems, use the appropriate extension cables and connectors.
Selection Guide and Purchasing Advice
When ordering the 21000-34-05-15-050-03-02, verify that the probe option, cable length, standoff adapter, and fitting options match your application requirements. AutoDCSTech offers this assembly 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 | 21000-34-05-15-050-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
