Product Overview
The Bently Nevada 21000-16-10-15-070-03-02 is a precision-engineered Proximity Probe Housing Assembly designed for reliable vibration monitoring in critical rotating machinery. This model combines a 3300 XL 8 mm probe with a 1.0 m (39 in) cable, a 1.5 in (38 mm) standoff adapter, and a 7 in probe penetration, making it ideal for applications requiring accurate shaft displacement measurement.
Built with a rugged aluminum body and a 304 stainless steel sleeve, the 21000-16-10-15-070-03-02 meets the demanding requirements of industrial environments. It is certified by CSA for explosion-proof use in hazardous areas and fully complies with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.
Technical Specifications
| Parameter |
Specification |
| Probe Option |
3300 XL 8 mm probe |
| Probe Cable Length |
1.0 m (39 in) |
| Standoff Adapter |
1.5 in (38 mm) |
| Probe Penetration (Option D) |
7 in |
| Mounting Thread |
3/4-14 NPT |
| Fittings |
One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets |
| Material |
Aluminum body with 304 stainless steel sleeve |
| Maximum (C) + (D) Dimension |
17.0 in (43.18 cm) with visible probe P/N and S/N; 32.9 in (83.5 cm) maximum |
| Weight |
1.1 kg (2.4 lb) typical, without fittings |
These specifications ensure precise installation and reliable performance in demanding industrial settings.
Industry Applications
The 21000-16-10-15-070-03-02 excels in applications where continuous monitoring of shaft vibration and position is critical. Common use cases include:
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Turbo-machinery monitoring: Ideal for steam turbines, gas turbines, and compressors where accurate rotor dynamics are essential.
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Pump and motor protection: Detects early signs of misalignment, unbalance, or bearing wear, preventing unplanned downtime.
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Hazardous area installations: With CSA explosion-proof certification, it suits oil & gas, chemical, and petrochemical plants.
By choosing this Bently Nevada 21000-16-10-15-070-03-02 housing, you gain a robust solution that enhances machinery reliability and operational safety.
Installation & Setup Guidance
Proper installation is vital for accurate measurements. Follow these guidelines:
- Mount the housing using the 3/4-14 NPT thread. Ensure the mating surface is clean and flat to avoid leakage.
- For probe penetration lengths between 1.0 and 2.0 inches, consider counter boring the machine case to reduce side-view or rear-view effects.
- If the combined C plus D penetration exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance.
- The adjustment range for probe penetration option D is 13 mm (±0.5 in). Set the probe gap according to the system's calibration requirements.
- Use the provided cable seal grip and grommets to secure cables of 1/8 to 3/8 inches diameter, ensuring a moisture-tight seal.
Maintenance & Reliability
Regular inspection of the housing and probe assembly extends service life and sustains measurement accuracy. Key maintenance points include:
- Check the dome cover and threaded ports for signs of corrosion or damage.
- Verify the O-rings and thread seal remain intact to maintain the enclosure rating.
- Periodically confirm that the probe cable is not chafed or pinched, especially near the machine case.
- Clean the probe tip and housing exterior as needed, avoiding harsh solvents that may degrade seals.
With a typical weight of 1.1 kg and robust construction, this assembly minimizes maintenance frequency, reducing total cost of ownership.
Selection Guide & Purchasing Advice
Before ordering, verify your machine's specific requirements: probe cable length, standoff adapter, and penetration depth must match your application. The 21000-16-10-15-070-03-02 is configured with a 1.0 m cable, 1.5 in standoff, and 7 in penetration — confirm these suit your installation. Also ensure the mounting thread (3/4-14 NPT) fits your equipment's port.
For a reliable supply of genuine Bently Nevada parts, PLC Source PRO offers this model new in factory packing with a 12-month warranty. Our team can assist with technical queries to ensure you select the right configuration.