Designed to Maximize Protection for Critical Vibration Monitoring Systems
The Bently Nevada 21000-28-05-15-050-03-02 Proximity Probe Housing Assembly (3300 XL) is a heavy-duty mounting solution engineered for the secure installation of 3300 XL 8 mm reverse-mount proximity probes in industrial machinery protection systems. Designed for continuous service in harsh operating environments, this housing assembly delivers dependable environmental protection while maintaining precise probe positioning for accurate shaft vibration and displacement monitoring. It is configured with a 1.5-inch standoff adapter, 5.0-inch probe penetration, 0.5 m (20 in) probe cable, and 3/4-14 NPT mounting thread, making it suitable for a wide variety of rotating equipment installations.
Built with an aluminum housing and a corrosion-resistant 304 stainless-steel sleeve, this assembly offers outstanding durability, simplified maintenance, and reliable performance in demanding industries such as power generation, oil & gas, petrochemical processing, and heavy manufacturing. Its modular design allows technicians to inspect or replace probes with minimal downtime, helping improve equipment availability and reduce maintenance costs.
Technical Specifications
| Parameter | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-28-05-15-050-03-02 |
| Product Type | Proximity Probe Housing Assembly (3300 XL) |
| Compatible Probe | 3300 XL 8 mm Reverse-Mount Proximity Probe |
| Probe Cable Length | 0.5 m (20 in) |
| Standoff Adapter | 1.5 in (38 mm) |
| Probe Penetration | 5.0 in |
| Housing Material | Aluminum Housing with 304 Stainless Steel Probe Sleeve |
| Mounting Thread | 3/4-14 NPT |
| Fitting Configuration | One 3/4-14 NPT Plug, Reducer and Cable Seal Grip |
| Application | Machinery Protection & Condition Monitoring |
| Dimensions | Approx. 305 × 78 × 78 mm |
| Weight | Approx. 2.00 kg |
Typical Applications
The 21000-28-05-15-050-03-02 is widely selected for machinery protection systems where secure probe mounting and long-term durability are essential.
- Steam Turbine Monitoring
- Gas Turbine Systems
- Centrifugal Compressors
- High-Speed Pumps
- Industrial Electric Motors
- Power Generators
- Fans and Blowers
- Oil & Gas Production Facilities
- Petrochemical Processing Plants
- Power Generation Stations
Technical FAQs
1. What is the purpose of the 21000-28-05-15-050-03-02?
It provides a protected external mounting point for a 3300 XL proximity probe while ensuring accurate positioning for shaft vibration and displacement monitoring.
2. Which proximity probe is compatible with this assembly?
It is configured for a 3300 XL 8 mm reverse-mount proximity probe with a 0.5 m (20 in) integral cable.
3. What is the function of the 1.5-inch standoff adapter?
The integrated standoff adapter provides additional clearance between the machine casing and the housing, making installation easier on equipment with restricted mounting locations.
4. What does the 5.0-inch probe penetration indicate?
It specifies the effective insertion depth of the probe sleeve, making this assembly suitable for medium-depth bearing housings and rotating equipment.
5. Which mounting thread is provided?
The housing uses a 3/4-14 NPT mounting thread for secure attachment to compatible machinery.
6. What materials are used in the housing?
The assembly combines an aluminum body with a 304 stainless-steel probe sleeve, offering excellent corrosion resistance and mechanical durability.
7. Is this model suitable for hazardous industrial environments?
Yes. It is designed for demanding industrial applications and can be used with appropriately approved 3300 XL probes for hazardous-area installations.
8. Which industries typically install this product?
It is commonly deployed in oil & gas, petrochemical, power generation, mining, marine, pulp & paper, and other industries operating critical rotating machinery.
9. What are the dimensions and weight?
The housing assembly measures approximately 305 × 78 × 78 mm and weighs approximately 2.00 kg, providing a robust and reliable mounting solution.
10. Why is the 21000-28-05-15-050-03-02 a preferred choice?
Its rugged construction, optimized probe penetration, integrated standoff adapter, and compatibility with the proven 3300 XL monitoring platform make it an ideal solution for protecting valuable industrial assets while supporting predictive maintenance strategies.
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