21000-28-05-00-096-03-02 | Bently Nevada 8 mm Probe Housing Assembly

What Is the 21000-28-05-00-096-03-02?

When an industrial facility requires precise rotor vibration monitoring in explosive environments, the 21000-28-05-00-096-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series and is designed to house an 8 mm probe with a 0.5 m cable. It is built with an aluminum body and a 304 stainless steel sleeve, ensuring durability in harsh conditions. The assembly includes a dome cover, threaded ports, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. It is CSA certified for explosion-proof applications, making it suitable for hazardous areas.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 inches).
• Probe Penetration: 9.6 inches.
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 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.
• Certifications: CSA Type 4 enclosure, explosion-proof 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. Temperature ratings: T5 @ Ta = -50°C to +40°C, T4 @ Ta = -50°C to +80°C.

A distinctive feature of the 21000-28-05-00-096-03-02 is its 9.6-inch probe penetration, which allows deep insertion into machine casings for accurate proximity measurements. This spec is critical for large rotating equipment where standard probes may not reach the target.

Real-World Applications

In the oil and gas industry, the 21000-28-05-00-096-03-02 is used to monitor shaft vibration in compressors and turbines. Its explosion-proof rating ensures safe operation in areas with flammable gases. Similarly, in chemical plants, this housing assembly provides reliable data for predictive maintenance, reducing unplanned downtime. The CSA Type 4 enclosure also makes it suitable for outdoor installations exposed to weather.

Installation and Setup

Mount the 21000-28-05-00-096-03-02 using the 3/4-14 NPT thread option. Ensure the probe cable length of 0.5 m is sufficient for the distance to the monitor. The fitting kit includes a cable seal grip with grommets for various cable diameters, so select the appropriate grommet for a tight seal. Always follow Bently Nevada's installation manual for proper torque and alignment.

Routine Care and Reliability

Periodically inspect the O-rings and cable seal grip for wear. The aluminum body resists corrosion, but check for damage in harsh environments. Regular inspection per the manufacturer's manual helps maintain the assembly's explosion-proof integrity. This proactive approach extends service life and reduces replacement costs.

Compatible Systems

The 21000-28-05-00-096-03-02 works with Bently Nevada monitoring systems that accept 8 mm proximity probes. It is fully compliant with the API 670 Standard for externally mounted proximity probe housings, ensuring integration with standard vibration monitoring setups.

Common Questions About the 21000-28-05-00-096-03-02

Q: What is the maximum cable length for the probe?

A: The probe cable length is 0.5 m (20 inches) as specified in the ordering information.

Q: Is this housing assembly suitable for outdoor use?

A: Yes, it is rated as a CSA Type 4 enclosure, which provides protection against weather and splashing water.

Q: What mounting thread is required?

A: The mounting thread option is 3/4-14 NPT. This must be ordered if the standoff adapter length option is not 00.

Q: Does it come with fittings?

A: Yes, the fitting option includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets.

Q: What is the weight of the assembly?

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

Product Support and Availability

The 21000-28-05-00-096-03-02 is in stock at Petro Auto Tech and ready to ship. Contact Petro Auto Tech for current lifecycle status and availability before ordering.