Technical Specifications Breakdown
Key parameters for the 21000-16-05-00-030-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 3300 XL 8 mm probe with connector |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | None (00) |
| Probe Penetration | 3.0 in (030) |
| Fitting Option | One 3/4-14 NPT plug only |
| Mounting Thread | 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 mm) |
| Weight (typical, without fittings) | 1.1 kg (2.4 lb) |
Application Versatility in Rotating Machinery
Typical installations include:
- Steam and gas turbines – where reliable clearance measurement prevents blade rubs and bearing damage.
- Centrifugal compressors – requiring stable probe mounting under high vibration levels.
- Large pumps and fans – where external mounting simplifies retrofit without machine disassembly.
The 3/4-14 NPT mounting thread and single NPT plug fitting allow straightforward integration into existing machine casings or custom brackets.
Selection Guidance for Your Application
When ordering replacement or new assemblies, verify the probe cable length (0.5 m), penetration depth (3.0 in), and mounting thread (3/4-14 NPT) match your existing installation. The standoff adapter option (00) indicates direct mounting without additional offset. Contact AutoDCSTech for availability and lifecycle status before ordering. All units ship as new and original in factory packing with a 12-month warranty.
Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Installation Considerations for Reliable Performance
When installing this assembly, ensure the probe tip clearance meets the 3300 XL system requirements. The maximum (C) + (D) dimension of 13.5 in (34.3 mm) must be respected to avoid mechanical interference. Use the provided thread seal on the NPT fitting to maintain environmental sealing. The dome cover screws into the body and should be tightened to manufacturer torque specifications to preserve the explosion-proof rating.
Maintenance and Long-Term Reliability
Periodically inspect the housing for signs of corrosion or physical damage, especially in corrosive atmospheres. Verify that all O-rings remain intact to prevent moisture ingress. The 304 stainless steel sleeve resists wear from probe insertion and removal, but check for galling if the probe is frequently adjusted. No internal disassembly is required for routine maintenance.
Robust Protection for Critical Vibration Monitoring
In rotating machinery monitoring, probe housing integrity directly impacts measurement reliability. The Bently Nevada 21000-16-05-00-030-04-02 Proximity Probe Housing Assembly provides a rugged, explosion-proof enclosure designed for demanding industrial environments. This assembly safeguards the sensitive proximity probe while maintaining accurate clearance measurements for compressor, turbine, and pump protection.

Engineered for Hazardous Environments
This housing assembly carries CSA approvals for explosion-proof service in hazardous areas. It is rated as a CSA Type 4 enclosure and fully complies with API 670 Standard for externally mounted proximity probe housings. The aluminum body combined with a 304 stainless steel sleeve offers corrosion resistance while maintaining structural integrity. For intrinsically safe applications, order hazardous area approved proximity probes with this housing.

Availability & Condition at AutoDCSTech
| Part Number | 21000-16-05-00-030-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
