Technical Specifications Breakdown
Key parameters for the 21000-34-05-15-066-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 34 = 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | 1.5 in |
| Probe Penetration | 6.6 in |
| Mounting Thread | 3/4-14 NPT |
| Housing Material | Aluminum body with 304 stainless steel sleeve |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 cm) |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
Application in Rotating Machinery Protection
This housing assembly is engineered for externally mounted proximity probes on compressors, turbines, pumps, and fans. The 3300 XL 8 mm probe provides reliable shaft displacement and vibration measurement. The 1.5 in standoff adapter and 6.6 in probe penetration accommodate a wide range of machine geometries, making this assembly a versatile choice for retrofits and new installations.

Installation Guidance for Engineers
Proper installation is critical for accurate readings. The housing includes a dome cover, threaded conduit ports, and a probe sleeve. The mounting thread is 3/4-14 NPT. The assembly comes with 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 sizes from 1/8 to 3/8 inches. Ensure the probe cable length of 0.5 m is routed without sharp bends to avoid signal degradation.
Maintenance and Reliability
Routine inspection of the housing and probe assembly is recommended. Check the O-rings and thread seal for integrity during each maintenance cycle. The aluminum body with 304 stainless steel sleeve offers corrosion resistance in typical industrial environments. For hazardous areas, the assembly can be ordered with CSA explosion-proof ratings when using appropriate options.
The Right Fit for Reliable Vibration Monitoring
When protecting critical rotating machinery, the mounting solution is as important as the sensor itself. The Bently Nevada 21000-34-05-15-066-03-02 proximity probe housing assembly provides a robust, field-proven enclosure for the 3300 XL 8 mm probe. Designed for externally mounted applications, this assembly ensures consistent, accurate measurements in demanding industrial environments.

Selection Guidance
When selecting a proximity probe housing, verify the probe penetration and standoff adapter length match your machine's clearance requirements. The 21000-34-05-15-066-03-02 is a complete assembly ready for installation.
Availability & Condition at AutoDCSTech
| Part Number | 21000-34-05-15-066-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
