Technical Specifications Breakdown
Key parameters for the 21000-28-10-20-030-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 28 3300 XL 8 mm probe, selectable hazardous area approvals |
| Probe Cable Length | 10 1.0 m (39 in) |
| Standoff Adapter | 20=2 in |
| Probe Penetration | 030=3 in |
| Fitting Option | 04 One 3/4-14 NPT plug only |
| Mounting Thread Option | 02 3/4-14 NPT |
| Material | 21000 Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
| Maximum (C) + (D) Dimension | 32.9 in (83.5 cm) with 1.0 m cable and visible probe (P/N and S/N) |
Industry Applications for the 21000 Housing Assembly
The 21000-28-10-20-030-04-02 is designed for externally mounted proximity probes on rotating equipment such as turbines, compressors, and pumps. Its CSA Type 4 enclosure rating and explosion-proof certification make it suitable for hazardous locations in oil and gas, petrochemical, and power generation industries. The 304 stainless steel sleeve provides corrosion resistance in harsh environments, while the aluminum body offers lightweight durability.

Installation & Setup Guidance
When installing the 21000 housing assembly, ensure the mounting thread (3/4-14 NPT) is properly sealed with thread sealant (provided). The standoff adapter length of 2 in must be ordered if the standoff adapter option is not 00. The probe cable length of 1.0 m (39 in) should be routed without sharp bends to maintain signal integrity. The dome cover screws into the body, and threaded ports accept conduit connections. Always follow the manufacturer's drawing for non-incendive circuit connections.
Maintenance & Reliability
Inspect the housing assembly periodically for signs of corrosion, seal degradation, or physical damage. The 0-rings and thread seal should be checked during routine maintenance. The aluminum body and stainless steel sleeve require minimal upkeep but should be kept free of debris. The assembly is rated for ambient temperatures from -50°C to +80°C (T4 rating) and -50°C to +40°C (T5 rating), ensuring reliable operation in extreme conditions.

Compatibility & Integration
This housing assembly is compatible with Bently Nevada 3300 XL 8 mm proximity probes with hazardous area approvals. The 21000 aluminum housing is certified as CSA Type 4 and fully compliant with API 670 Standard for externally mounted proximity probe housings. The optional standoff adapter and conduit fittings allow integration into existing monitoring systems.
Selection Guide & Purchasing Advice
When selecting the 21000-28-10-20-030-04-02, verify that the probe cable length, standoff adapter, and probe penetration meet your application requirements. This assembly is supplied new and original in factory packing with a 12-month warranty from AutoDCSTech. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-28-10-20-030-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
