Product Overview
The Bently Nevada 21000-00-00-15-085-03-02 is a precision-engineered Proximity Probe Housing Assembly designed for reliable vibration monitoring in critical rotating machinery. This industrial automation module provides a robust, explosion-proof enclosure for reverse mount proximity probes, ensuring accurate measurements in hazardous environments. With a 1.5-inch standoff adapter and 8.5-inch probe penetration, this assembly meets the demanding requirements of API 670 compliant installations.
Key Features & Benefits
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Explosion-proof certification: CSA certified for Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III, ensuring safe operation in hazardous areas.
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Durable construction: Aluminum body with 304 stainless steel sleeve offers corrosion resistance and long service life.
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Versatile mounting: Includes two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, and cable seal grip with grommets for various cable sizes.
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Complete assembly: Comes with dome cover, threaded ports, probe sleeve, O-rings, reverse mount probe, thread seal, and optional conduit fittings.
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RoHS compliant: Meets European Community Directive 2011/65/EU.
Technical Specifications
| Parameter |
Value |
| Standoff Adapter |
1.5 in |
| Probe Penetration |
8.5 in |
| Fitting Option |
Without fittings |
| Mounting Thread Option |
Two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, cable seal grip with grommets |
| Material |
Aluminum body with 304 stainless steel sleeve |
| Weight |
1.1 kg (2.4 lb) typical, without fittings |
| Temperature Rating |
T5 @ Ta = -50°C to +40°C; T4 @ Ta = -50°C to +80°C |
| Enclosure Type |
CSA Type 4 |
Industry Applications
This housing assembly excels in applications where reliable vibration monitoring is critical. Typical use cases include:
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Turbo-machinery monitoring: Installed on compressors, turbines, and pumps to track shaft vibration and position, preventing catastrophic failures.
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Hazardous area installations: Suitable for oil & gas facilities, chemical plants, and refineries where explosive atmospheres exist, thanks to its CSA explosion-proof rating.
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API 670 compliance: Meets the American Petroleum Institute's standard for externally mounted proximity probe housings, making it ideal for API-compliant machinery protection systems.
Installation & Setup Guidance
For optimal performance, ensure the housing is mounted securely to the machine casing. The 3/4-14 NPT mounting thread provides a robust connection. When installing, verify the probe penetration depth (8.5 inches) matches your measurement requirements. Use the provided cable seal grip with appropriate grommets to maintain the explosion-proof seal. Always follow the manufacturer's wiring diagram (refer to drawing 140979 for non-incendive circuits) to maintain safety certifications.
Maintenance & Reliability
Routine inspection of the housing assembly is essential to ensure long-term reliability. Check the O-rings and thread seals for wear or damage during scheduled maintenance. The aluminum and stainless steel construction resists corrosion, but in harsh environments, periodic cleaning is recommended. The robust design minimizes downtime, offering a cost-effective solution for continuous monitoring.
Selection Guide & Purchasing Advice
Before purchasing, verify that the standoff adapter (1.5 in) and probe penetration (8.5 in) match your application requirements. Confirm the mounting thread option with your existing conduit system. This model includes a cable seal grip for cable sizes 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. PLC Source PRO offers this Bently Nevada 21000-00-00-15-085-03-02 as new, original factory-packed stock with a 12-month warranty, ensuring you receive a genuine, reliable component.