Description
Designed to provide physical protection and environmental sealing for proximity transducers, the Bently Nevada 21000-16-05-00-062-03-02 is a rugged probe housing assembly configured for industrial machinery monitoring. Built with an anodized aluminum body and a high-grade 304 stainless steel sleeve, this mechanical protective dome shields critical proximity probes from aggressive industrial environments, moisture, and mechanical damage. The integration of specialized cable seals and mounting options ensures seamless deployment on steam turbines, compressors, and high-speed rotating machinery casings.
Features
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Engineered Protection: Combines a lightweight aluminum housing body with a robust 304 stainless steel sleeve.
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Optimized Probe Compatibility: Specially designed for seamless integration with a 3300 XL 8 mm proximity probe.
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Direct Mount Configuration: Features a 3/4-14 NPT mounting thread option with zero standoff adapter requirement.
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Flexible Cable Entry: Outfitted with multiple grommet options to securely seal varying field cable diameters.
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Robust Environmental Seal: Prevents industrial process contaminants and moisture from degrading probe connections.
Applications
- Industrial steam and gas turbine shaft vibration and expansion monitoring.
- Hydroelectric generator shaft alignment and radial displacement measurement.
- High-pressure process compressor and pump vibration protection networks.
- Corrosive or high-humidity heavy manufacturing environments demanding mechanical transducers protection.
Technical Specifications
| Specification Parameter |
Configuration Details |
| Manufacturer |
Bently Nevada |
| Model / Article Number |
21000-16-05-00-062-03-02 |
| Series Name |
21000 Series Proximity Probe Housing |
| Probe Option Code |
16 (Optimized for 3300 XL 8 mm probe) |
| Probe Cable Length Option |
05 (0.5 meter / 20 inches) |
| Standoff Adapter Option |
00 (No standoff adapter configured) |
| Probe Penetration Depth |
062 (6.2 inches / 157.5 mm) |
| Fittings Package Option |
03 (One 3/4-14 NPT plug; one 3/4-14 to 1/2-14 NPT reducer; one cable seal grip with grommets) |
| Compatible Cable Sizes |
1/8 to 3/16 inch, 1/4 to 5/16 inch, and 5/16 to 3/8 inch |
| Mounting Thread Size |
02 (3/4-14 NPT) |
| Housing Material |
Anodized Aluminum body with 304 Stainless Steel sleeve |
| Country of Origin |
United States (USA) |
| Shipping Weight (Calculated) |
2.0 kg (4.4 lbs) |
Ports and Interfaces
| Interface Port |
Thread / Fitting Assignment |
Functional Use |
| Process Connection Port |
3/4-14 NPT male thread |
Direct casing mounting into the machine housing port. |
| Cable Conduit Entry |
3/4-14 to 1/2-14 NPT reducer |
Routing point for secondary flexible or rigid protective conduit. |
| External Seal Fitting |
Multi-grommet cable seal grip |
Secures coaxial cable and prevents process-fluid bypass. |
Empirical Engineering Insights
Alternative Models & Compatibility
This 21000 housing configuration is tailored for the 3300 XL 8 mm transducer line. If retrofitting an older 7200 series transducer setup, do not attempt to force the probe into the sleeve, as the internal dimensions and shoulder stops differ. Verify sleeve inner diameter clearance prior to insertion.
Application Pitfalls & Engineering Notes
Operating in environments with highly corrosive acidic gases can accelerate galvanic corrosion between the aluminum body and the stainless steel sleeve if moisture pools around the threads. In such installations, ensure thread lubricants with active anti-corrosion inhibitors are applied uniformly during assembly.
Commissioning & Wiring Tips
Always insert the probe and route its integrated 0.5-meter cable through the sleeve and cable grip BEFORE securing the housing into the machine casing. Spinning the housing with the probe pre-installed and wired will twist the coaxial cable, leading to micro-fractures in the conductor shield and subsequent signal degradation.
Installation Guidelines
CRITICAL WARNING: Verify the machinery is completely de-energized, depressurized, and cooled to ambient temperature before installing or adjusting the probe housing. Physical ejection under fluid or gas pressure can cause severe personal injury or catastrophic transducer destruction.
1
Inspect the machinery mounting port and clear away any residual thread compounds, oxidation, or burrs from the 3/4-14 NPT interface.
2
Insert the 3300 XL probe into the sleeve and run the 0.5-meter coaxial cable carefully through the internal passage. Ensure the probe is securely seated at the base.
3
Apply an appropriate industrial thread sealant to the 3/4-14 NPT mounting threads, thread the housing into the machine case, and torque to OEM specifications.
4
Select the matching grommet size from the Option 03 pack based on your cable outer diameter. Assemble the cable seal grip to seal the exit port completely.