Evaluating the Bently Nevada 21000-34-05-00-039-03-02 for Your Vibration Monitoring Needs
When selecting a proximity probe housing assembly for critical rotating machinery, the Bently Nevada 21000-34-05-00-039-03-02 offers a robust solution. This component is part of the 21000 series, designed to house a 3300 XL 8 mm probe with connector protector. It is built for demanding industrial environments where reliable vibration and position measurement are essential.
Technical Specifications Breakdown
Key parameters for the 21000-34-05-00-039-03-02 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 | 05 = 0.5 m (20 in) |
| Standoff Adapter | 00 = No standoff adapter |
| Probe Penetration | 039 = 3.9 in |
| Mounting Thread | -02 = 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 cm) |
Industry Applications and Operational Benefits
This housing assembly is engineered for use in refineries, chemical plants, and power generation facilities where continuous monitoring of shaft vibration and position is critical. The 21000-34-05-00-039-03-02 is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings. This compliance ensures that the assembly meets industry benchmarks for reliability and safety in rotating machinery protection. By choosing this model, you reduce the risk of unplanned downtime and extend the life of your turbomachinery assets.
Installation and Setup Guidance
Proper installation is crucial for accurate measurements. The mounting thread option -02 specifies a 3/4-14 NPT connection, which must be used when no standoff adapter is selected. The assembly includes a dome cover, threaded ports for conduit connections, and a probe sleeve of optional length. Ensure that the probe cable length of 0.5 m is accounted for in your routing. The fitting option provides 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. Follow standard practices for hazardous area installations to maintain safety.
Maintenance and Reliability
To maintain long-term performance, inspect the housing assembly periodically for signs of corrosion or mechanical damage. The aluminum body with 304 stainless steel sleeve offers good resistance to harsh environments. Check O-rings and thread seals during routine maintenance to ensure a proper seal. The assembly is rated explosion proof for hazardous areas and carries Canadian Standards Association (CSA) approvals as a Type 4 enclosure. Always verify that the hazardous area approvals match your site requirements.
Selection Guide and Purchasing Advice
When evaluating the 21000-34-05-00-039-03-02, consider your specific probe penetration needs (3.9 in) and cable length (0.5 m). AutoDCSTech stocks this unit as new and original in factory packing, backed by a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering to ensure it meets your project timeline.


Availability & Condition at AutoDCSTech
| Part Number | 21000-34-05-00-039-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
