21000-28-05-45-020-03-02 | Bently Nevada 0.5m Cable Proximity Probe Housing Assembly

What Makes the Bently Nevada 21000-28-05-45-020-03-02 Essential for Machinery Protection?

When unplanned downtime threatens production targets, the 21000-28-05-45-020-03-02 from Bently Nevada provides a robust solution for externally mounted proximity probes. This housing assembly is engineered to protect sensitive vibration sensors in harsh industrial environments. With an aluminum body and 304 stainless steel sleeve, it offers durability and corrosion resistance. The assembly includes a dome cover, threaded conduit ports, a probe sleeve, O-rings, a reverse mount proximity probe, a thread seal, and optional conduit fittings. It is designed for use with 3300 XL 8 mm probes and supports selectable hazardous area approvals.

Key Features and Technical Specifications of the 21000-28-05-45-020-03-02

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in).
• Standoff Adapter: 4.5 in.
• Probe Penetration: 2 in.
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with grommets for cable sizes 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum (C) + (D) Dimension: 13.5 in (34.3 mm) with 0.5 m cable.

A standout specification is the 0.5 m probe cable length, which enables tight installation in confined spaces while maintaining signal integrity. The assembly is certified as CSA Type 4 enclosure and complies with API 670 Standard for externally mounted proximity probe housings.

Applications and Use Cases for the 21000-28-05-45-020-03-02

Industries rely on the 21000-28-05-45-020-03-02 for vibration monitoring in rotating equipment such as turbines, compressors, and pumps. Its explosion-proof rating makes it suitable for hazardous areas in oil and gas, petrochemical, and power generation facilities. The housing assembly meets Class I Divisions 1 and 2 Groups C and D, and Class II Divisions 1 and 2 Groups E, F, and G. Consequently, it provides reliable operation in environments where flammable gases or combustible dusts are present. The CSA certification ensures compliance with North American safety standards.

Installation and Setup Guidance

Mount the 21000-28-05-45-020-03-02 using the 3/4-14 NPT mounting thread. If the standoff adapter length option is not 00, the mounting thread option must be ordered separately. Ensure the cable seal grip grommets match the cable diameter for a proper seal. The assembly includes a 3/4-14 NPT plug and a reducer to 1/2-14 NPT for conduit connections. Follow the manufacturer's manual for torque specifications and wiring instructions. Always verify that the hazardous area approval matches the site classification before installation.

Maintenance and Reliability Tips

Regular inspection of the housing assembly helps prevent premature failure. Check O-rings and seals for wear during routine maintenance intervals. The aluminum body and stainless steel sleeve resist corrosion in most industrial environments. For optimal reliability, verify that all conduit fittings remain tight and that the cable seal grip maintains a proper seal. The assembly's CSA Type 4 enclosure rating ensures protection against water ingress and dust. Periodically confirm that the probe cable length and standoff adapter are correctly adjusted per the manufacturer's recommendations.

Compatibility and Integration

The 21000-28-05-45-020-03-02 is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. It integrates seamlessly with Bently Nevada monitoring systems for real-time vibration data acquisition. The housing assembly supports hazardous area approved probes for intrinsically safe applications. Its compliance with API 670 Standard ensures compatibility with industry-standard mounting configurations. For system integration, refer to the official Bently Nevada documentation for wiring diagrams and system requirements.

Frequently Asked Questions about the 21000-28-05-45-020-03-02

What is the probe cable length for this housing assembly?

The probe cable length is 0.5 m (20 in).

What mounting thread does the 21000-28-05-45-020-03-02 use?

The mounting thread is 3/4-14 NPT.

Is this housing assembly certified for hazardous areas?

Yes, it is CSA certified for explosion-proof applications 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 materials are used in the construction?

The body is aluminum with a 304 stainless steel sleeve.

What is the typical weight of the assembly?

The typical weight is 1.1 kg (2.4 lb) without fittings.

Product Support and Availability

The 21000-28-05-45-020-03-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Contact Petro Auto Tech for current stock status and lead times. Please verify the lifecycle status and availability with Petro Auto Tech before ordering.