21000-28-10-00-185-04-02 | Bently Nevada 1.0m Probe Housing Assembly

Introduction to the 21000-28-10-00-185-04-02

When machinery vibration monitoring demands reliable, explosion-proof housing, the 21000-28-10-00-185-04-02 from Bently Nevada delivers a proven solution. This proximity probe housing assembly protects sensitive 8 mm probes in harsh industrial settings. It combines an aluminum body with a 304 stainless steel sleeve for durability and corrosion resistance. The assembly includes a dome cover, threaded conduit ports, and a probe sleeve of optional length. Engineers can trust this housing for consistent performance in hazardous area applications.

Key Features and Technical Specifications

• Probe Option: 28 = 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 10 = 1.0 m (20 in).
• Standoff Adapter: 00 = no standoff adapter included.
• Probe Penetration: 185 = 18.5 in.
• Fitting Option: 04 = one 3/4-14 NPT plug only.
• Mounting Thread: 02 = 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) with visible probe.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

The 21000-28-10-00-185-04-02 is certified by CSA for explosion-proof use in North America. It meets Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III. The enclosure is rated Type 4 with T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C. This housing also complies with the API 670 Standard for externally mounted proximity probe housings.

Real-World Applications and Use Cases

In petrochemical plants, the 21000-28-10-00-185-04-02 safeguards vibration probes on critical rotating equipment. Its CSA certification allows installation in explosive gas and dust atmospheres. For example, a refinery can mount this housing on a compressor to monitor shaft displacement without risking ignition. The 1.0 m probe cable length suits tight spaces near machinery. Additionally, the 18.5 in probe penetration accommodates deep bearing housings. This housing also meets API 670 standards, making it ideal for oil and gas applications.

Installation and Setup Guidance

Mount the 21000-28-10-00-185-04-02 using the 3/4-14 NPT thread. Ensure the probe sleeve length matches your machine’s clearance. The housing includes a dome cover that screws into the body for secure sealing. Use the provided thread seal on conduit connections to maintain the explosion-proof rating. For intrinsically safe circuits, connect per drawing 140979. Always verify that the probe cable length (1.0 m) is sufficient for your routing. The optional standoff adapter (not included here) can adjust probe depth if needed.

Maintenance and Reliability Tips

Inspect the housing periodically for signs of corrosion or damage. The aluminum body and stainless steel sleeve resist most industrial environments. Check O-rings during routine maintenance to preserve the Type 4 seal. For hazardous areas, follow the manufacturer’s safety manual for inspection intervals. The robust construction minimizes downtime in continuous processes. Regular inspection helps extend service life and reduce replacement costs.

Compatibility and Integration

The 21000-28-10-00-185-04-02 works with Bently Nevada 3300 XL 8 mm proximity probes. It is fully compliant with API 670 for externally mounted housings. The housing accepts standard conduit fittings (3/4-14 NPT) for integration into existing wiring systems. It can be ordered with hazardous area approved probes for intrinsically safe applications. Both 21000 aluminum and 24701 stainless steel housings share the same mounting interface.

Frequently Asked Questions

What is the probe cable length for the 21000-28-10-00-185-04-02?

The probe cable length is 1.0 m (20 in), as indicated by the suffix code 10.

What mounting thread does this housing use?

The mounting thread is 3/4-14 NPT, specified by suffix code 02.

Is the 21000-28-10-00-185-04-02 certified for hazardous areas?

Yes, it is CSA certified for explosion-proof use in Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III.

What is the maximum dimension (C) + (D) with the probe visible?

The maximum (C) + (D) dimension is 32.9 in (83.5 cm) when the probe is visible.

What material is the housing body made of?

The housing body is aluminum with a 304 stainless steel sleeve.

Product Support and Availability

The Bently Nevada 21000-28-10-00-185-04-02 is in stock and ready to ship. Petro Auto Tech offers this new, original factory-packed unit with a 12-month warranty. Contact our team for ordering assistance or technical questions. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.