21000-34-00-00-018-03-02 | Bently Nevada 1.8 in Probe Penetration Housing Assembly

What Is the 21000-34-00-00-018-03-02?

When you need a robust solution for externally mounted proximity probes in demanding environments, the 21000-34-00-00-018-03-02 from Bently Nevada delivers. This housing assembly is part of the 21000 series, designed to protect and position a 3300 XL 8 mm probe with connector protector. It supports selectable hazardous area approvals, making it suitable for explosive atmospheres.

The assembly includes an aluminum body with a 304 stainless steel sleeve, ensuring durability and corrosion resistance. With a typical weight of 1.1 kg (2.4 lb) without fittings, it is built for long-term industrial use.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Penetration: 1.8 inches (018 suffix) for precise positioning.
• 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 for cable sizes 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inches.
• Mounting Thread: 3/4-14 NPT (suffix -02) for secure installation.
• Material: Aluminum body with 304 stainless steel sleeve for strength and corrosion resistance.
• Maximum (C) + (D) Dimension: 13.5 inches (34.3 cm) with visible probe P/N and S/N not visible.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

One distinctive spec is the 1.8-inch probe penetration, which allows precise insertion depth for accurate vibration readings. This is critical for applications requiring tight clearance or specific gap settings.

Applications & Use Cases

Engineers in the oil and gas, power generation, and chemical processing industries rely on the 21000-34-00-00-018-03-02 for continuous vibration monitoring of rotating machinery. Its CSA Type 4 enclosure rating and explosion-proof certification make it ideal for hazardous areas where safety is paramount. Additionally, it fully complies with the API 670 Standard for externally mounted proximity probe housings, ensuring compatibility with industry best practices.

Installation & Setup

Mount the housing using the 3/4-14 NPT thread option for a secure fit. The included fitting kit provides a 3/4-14 NPT plug, a reducer to 1/2-14 NPT, and a cable seal grip with multiple grommet sizes to accommodate cables from 1/8 to 3/8 inches. Ensure the probe cable length of 0.5 m is properly routed and the dome cover is tightened to maintain the explosion-proof seal.

Maintenance & Reliability

Periodically inspect the O-rings and thread seal for wear to maintain the housing's integrity. The aluminum and stainless steel construction resists corrosion, reducing maintenance frequency. For hazardous area installations, follow the manufacturer's safety manual for inspection intervals.

Compatibility & Integration

This housing assembly works with Bently Nevada 3300 XL 8 mm proximity probes and is designed for use with compatible monitoring systems. It supports both intrinsically safe and explosion-proof configurations, depending on the probe and hazardous area approval selected.

Frequently Asked Questions

Q: What is the probe penetration of the 21000-34-00-00-018-03-02?

A: The probe penetration is 1.8 inches (018 suffix), allowing precise insertion depth for accurate measurements.

Q: What mounting thread does this housing use?

A: It uses a 3/4-14 NPT thread (suffix -02) for secure installation in standard conduit openings.

Q: Is this housing suitable for hazardous areas?

A: Yes, it is rated explosion proof for hazardous areas and available with CSA approvals. It is certified as a CSA Type 4 enclosure.

Q: What fittings are included with the housing?

A: The kit includes 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 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inches.

Q: What is the weight of the 21000-34-00-00-018-03-02?

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

Product Support & Availability

The 21000-34-00-00-018-03-02 is available in new and original factory packing from Petro Auto Tech. In stock and ready to ship, it comes with a 12-month factory warranty. Contact Petro Auto Tech for current lifecycle status and ordering details.