



Precision Probe Housing Assembly for Extended-Reach Machinery Monitoring
The Bently Nevada 21000-16-10-15-144-03-02 Proximity Probe Housing Assembly is a robust external mounting solution engineered to protect proximity probes while ensuring accurate vibration and shaft position measurements in critical rotating machinery. As a member of the 21000 Proximity Probe Housing Assembly family, it provides a secure enclosure, simplified probe adjustment, and reliable environmental sealing for long-term industrial operation. Designed to support API-style machinery protection systems, this assembly is widely used in power generation, oil and gas, petrochemical, and heavy industrial applications.
This configuration includes a 3300 XL 8 mm reverse-mount proximity probe, a 1.0 m (39 in.) probe cable, a 1.5 in. (38 mm) standoff adapter, a 14.4 in. (366 mm) probe penetration, a cable seal grip fitting package, and a 3/4-14 NPT mounting thread. Its extended penetration length makes it an excellent choice for deep bearing housing installations requiring dependable probe positioning and protection.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-16-10-15-144-03-02 |
| Product Type | Proximity Probe Housing Assembly |
| Housing Series | 21000 |
| Housing Material | Cast Aluminum |
| Probe Sleeve Material | 304 Stainless Steel |
| Probe Included | 3300 XL 8 mm Reverse-Mount Proximity Probe |
| Probe Cable Length | 1.0 m (39 in.) |
| Standoff Adapter Length | 1.5 in. (38 mm) |
| Probe Penetration | 14.4 in. (366 mm) |
| Fitting Option | One 3/4-14 NPT Plug, One 3/4-14 to 1/2-14 NPT Reducer, One Cable Seal Grip with Grommets |
| Mounting Thread | 3/4-14 NPT |
| Cover Style | Threaded Dome Cover |
| Sealing Method | O-Ring Sealed Housing |
| Typical Compatibility | 3300 XL Proximity Transducer Systems |
| Approximate Dimensions | Vary according to sleeve configuration |
| Approximate Net Weight | 3.0 kg |
| Approximate Shipping Weight | 3.6 kg |
Typical Applications
The 21000-16-10-15-144-03-02 is developed for demanding machinery protection applications requiring long probe penetration and dependable environmental protection.
Typical installations include:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Industrial pumps
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Electric motors
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High-speed gearboxes
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Power generators
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Pipeline compressor stations
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Petrochemical processing equipment
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Offshore rotating machinery
Its extended 14.4-inch probe penetration makes it particularly suitable for deep bearing housings and applications where the sensing probe must reach through thick machine casings.
Technical FAQs
1. What is the function of the 21000 Proximity Probe Housing Assembly?
It provides a protected enclosure for reverse-mounted proximity probes while allowing precise probe positioning for machinery vibration and shaft position monitoring.
2. Which probe is supplied with this configuration?
This model includes a 3300 XL 8 mm reverse-mount proximity probe (Option 16).
3. What does the "10" option indicate?
It specifies a 1.0-meter (39-inch) integrated probe cable.
4. What does the "15" option represent?
The 15 option identifies a 1.5-inch (38 mm) standoff adapter for additional installation clearance.
5. What does the "144" option indicate?
The 144 option specifies a 14.4-inch (366 mm) probe penetration, enabling installation in deep bearing housings.
6. What is included with fitting option "03"?
Option 03 includes a 3/4-14 NPT plug, a 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with interchangeable grommets for multiple cable diameters.
7. What mounting thread is used?
This assembly features a 3/4-14 NPT mounting thread, suitable for standard industrial installations.
8. What materials are used in the housing?
The housing is manufactured from cast aluminum, while the probe sleeve is constructed from 304 stainless steel for enhanced durability and corrosion resistance.
9. Is this housing suitable for continuous monitoring systems?
Yes. It is designed for permanent installation in machinery protection and condition monitoring systems operating continuously.
10. Which industries commonly use this housing assembly?
It is widely installed in power generation, oil & gas, petrochemical, mining, pulp and paper, and other industries operating mission-critical rotating machinery.