



Rugged Stainless Steel Housing for Precision Proximity Monitoring
The Bently Nevada 24701-28-05-00-025-04-02 Proximity Probe Housing Assembly is a heavy-duty external mounting solution designed to provide secure positioning and protection for proximity probes used in rotating machinery condition monitoring systems. Built within the 24701 stainless steel housing series, this assembly enables reliable shaft vibration and displacement measurement while allowing convenient probe adjustment and replacement without major machine disassembly.
Configured with a 3300 XL 8 mm proximity probe, 0.5-meter cable length, 2.5-inch probe penetration, no standoff adapter, and a 3/4-14 NPT mounting connection, this housing assembly is optimized for installations requiring a compact yet durable probe mounting arrangement. The stainless steel construction provides excellent mechanical strength and corrosion resistance, making it suitable for demanding applications such as turbines, compressors, generators, and industrial rotating equipment.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 24701-28-05-00-025-04-02 |
| Product Type | Proximity Probe Housing Assembly |
| Housing Series | 24701 Stainless Steel Housing |
| Probe Configuration | 3300 XL 8 mm Proximity Probe |
| Probe Cable Length | 0.5 m (20 in) |
| Probe Option | 3300 XL 8 mm Probe with Connector |
| Standoff Adapter | None |
| Probe Penetration Length | 2.5 in (63.5 mm) |
| Fittings Option | One 3/4-14 NPT Plug |
| Mounting Thread | 3/4-14 NPT |
| Housing Material | 303 Stainless Steel Body / 304 Stainless Steel Sleeve |
| Probe Mounting Style | Reverse Mount |
| Operating Temperature Range | -51°C to +177°C |
| Dimensions | Approx. 260 × 78 × 78 mm |
| Weight | Approx. 2.14 kg |
Application Areas
The 24701-28-05-00-025-04-02 housing assembly is designed for industrial machinery applications where stable probe installation and accurate shaft monitoring are essential.
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Steam turbine vibration monitoring
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Gas turbine protection systems
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Centrifugal compressor monitoring
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Power generator condition monitoring
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Industrial pump monitoring
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Motor shaft displacement measurement
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Petrochemical processing equipment
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Oil and gas rotating machinery
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Refinery equipment protection
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Heavy industrial production systems
Technical FAQs
1. What is the main purpose of the 24701-28-05-00-025-04-02 assembly?
This assembly provides a protected mounting structure for proximity probes used to measure shaft vibration, displacement, and position on rotating machinery.
2. Which probe configuration does this model support?
This model uses a 3300 XL 8 mm proximity probe with connector, providing reliable eddy current measurement performance for machinery protection systems.
3. What does the “28” option indicate?
The “28” option identifies the housing configuration designed for a 3300 XL 8 mm probe with multiple approvals.
4. What does the “05” option represent?
The “05” option specifies a 0.5-meter (20-inch) probe cable length, providing flexibility between the probe location and monitoring electronics.
5. What does the “025” code mean?
The “025” option indicates a 2.5-inch probe penetration length, defining the sleeve length used for probe installation.
6. Does this model include a standoff adapter?
No. The “00” configuration indicates that no standoff adapter is included.
7. What fittings are supplied with this assembly?
The “04” fittings option includes one 3/4-14 NPT plug for the housing connection.
8. Why use a stainless steel probe housing assembly?
The 24701 stainless steel housing provides mechanical protection and allows external access to the proximity probe and extension cable for easier gap adjustment and replacement.
9. What machines typically use this housing assembly?
It is commonly installed on turbines, compressors, generators, pumps, and other critical rotating equipment requiring continuous condition monitoring.
10. Why choose the Bently Nevada 24701 series?
The 24701 series provides a durable all-metal mounting solution designed for reliable proximity probe installation in industrial environments, helping improve equipment reliability and simplify maintenance activities.