Technical Specifications Breakdown
Key parameters for the 24701-28-10-00-090-04-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 24701 - Proximity Probe Housing Assemblies |
| Probe Option | 28 - 3300 XL 8mm, with approval option |
| Probe Cable Length | 1 m (39 in) |
| Probe Penetration | 9 in (090) |
| Fittings Option | 04 - One 3/4-14 NPT plug only |
| Mounting Thread Option | 02 - 3/4-14 NPT |
| Body Material | 303 stainless steel |
| Sleeve Material | 304 stainless steel |
| Weight (typical, without fittings) | 1.8 kg (4.1 lb) |
| Max (C) + (D) with visible probe | 17.0 in (43.18 mm) |
| Max (C) + (D) Dimension | 29.2 in (74.2 mm) |
Industry Applications: Protecting Critical Rotating Assets
This housing assembly is purpose-built for permanent installation on compressors, steam turbines, centrifugal pumps, and large electric motors where reliable shaft radial vibration and axial position measurement are non-negotiable. The 3/4-14 NPT mounting thread and single plug fitting simplify field wiring while maintaining a sealed environment.

Installation & Setup Guidance
When installing the 24701-28-10-00-090-04-02, ensure the probe tip gap is set according to the Bently Nevada 3300 XL system manual. The 9 in probe penetration (090) provides sufficient reach for thick machine casings. Use the 3/4-14 NPT plug for conduit entry; if additional ports are needed, consult the factory for approved fitting options. The 303 stainless steel body resists corrosion in typical industrial atmospheres, while the 304 stainless steel sleeve protects the probe cable from abrasion.
Maintenance & Reliability
Periodically inspect the dome cover O-rings and thread seal for signs of wear or contamination. Verify that all NPT fittings remain tight to prevent moisture ingress. The all-stainless construction minimizes galvanic corrosion concerns. No internal adjustments are required; the housing is a passive mechanical assembly.

Selection Guide & Purchasing Advice
When selecting a replacement or spare housing, verify your existing probe cable length and mounting thread. The 24701-28-10-00-090-04-02 is a new, original Bently Nevada assembly supplied by AutoDCSTech in factory packing with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Troubleshooting & Common Issues
If the proximity probe fails to produce a signal, first check the cable continuity and connector integrity inside the housing. Inspect the O-rings for damage that could allow moisture to short the connector. Ensure the probe tip is not mechanically contacting the shaft. For persistent issues, replace the probe assembly as an unit.
Availability & Condition at AutoDCSTech
| Part Number | 24701-28-10-00-090-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
