Technical Specifications Breakdown
Key parameters for the 21000-34-05-15-030-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | 1.5 in |
| Probe Penetration | 3.0 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 |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 cm) |
Industry Applications and Operational ROI
This housing assembly is designed for use in critical rotating equipment such as steam turbines, compressors, and large pumps. By providing a secure, explosion-proof enclosure for the proximity probe, it enables continuous vibration monitoring that helps avoid unplanned downtime. The CSA Type 4 enclosure rating ensures protection against water ingress and dust, making it suitable for harsh environments like oil and gas refineries and petrochemical plants. Investing in this robust housing reduces the risk of probe damage and signal degradation, translating directly into lower maintenance costs and improved asset reliability.

Installation and Setup Guidance
Proper installation is key to achieving accurate measurements. The 21000-34-05-15-030-03-02 includes a 3/4-14 NPT mounting thread and comes with a set of conduit fittings: 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 tip is correctly positioned at the specified standoff distance (1.5 in) and that the probe penetration (3.0 in) is set according to the manufacturer's guidelines. For hazardous area installations, verify that the housing is ordered with the appropriate CSA-rated explosion-proof options.
Maintenance and Reliability
Routine inspection of the housing assembly should focus on verifying the integrity of the O-rings and the cable seal grip to maintain the CSA Type 4 enclosure rating. The aluminum body and 304 stainless steel sleeve resist corrosion in most industrial atmospheres. Periodically check that all fittings remain tight and that the probe cable is not chafed or pinched. No disassembly of the probe or housing is required for standard maintenance.
Robust Protection for Critical Machinery Monitoring
When selecting a proximity probe housing assembly for rotating machinery, the Bently Nevada 21000-34-05-15-030-03-02 stands out as a field-proven solution. This component is engineered to house and protect a 3300 XL 8 mm proximity probe in demanding industrial environments, ensuring accurate vibration and position measurements that are vital for predictive maintenance and machine protection.

Selection Guide and Purchasing Advice
When selecting a replacement or new installation, confirm that the suffix codes match your application requirements. The 21000-34-05-15-030-03-02 is configured with a 0.5 m cable, 1.5 in standoff adapter, and 3.0 in probe penetration. If your application demands different cable lengths or standoff distances, consult the ordering information to choose the correct suffix codes. 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.
Availability & Condition at AutoDCSTech
| Part Number | 21000-34-05-15-030-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
