21000-34-00-20-018-04-02 | Bently Nevada 2.8 in Probe Penetration Housing Assembly

Introduction to the 21000-34-00-20-018-04-02

When rotating machinery demands precise vibration monitoring, the 21000-34-00-20-018-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly belongs to the trusted 21000 series, engineered for harsh industrial environments. With a 2.8 in probe penetration and a 2.0 in standoff adapter, it provides accurate measurements for critical assets like turbines and compressors.

Industrial automation has evolved from simple mechanical guards to sophisticated condition monitoring systems. The 21000-34-00-20-018-04-02 represents this shift, offering a durable aluminum body with a 304 stainless steel sleeve. It weighs only 1.1 kg (2.4 lb) typical, making installation straightforward. This housing assembly supports selectable hazardous area approvals, ensuring safety in explosive environments.

Key Features and Technical Specifications of the 21000-34-00-20-018-04-02

The 21000-34-00-20-018-04-02 includes several standout features for reliable operation. Below are the core specs extracted directly from the product data:

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals
• Probe Cable Length: Not required (00)
• Standoff Adapter: 2.0 in (20)
• Probe Penetration: 2.8 in (018)
• Fitting Option: One 3/4-14 NPT plug only (04)
• Mounting Thread: 3/4-14 NPT (-02)
• Material: Aluminum body with 304 stainless steel sleeve
• Weight: 1.1 kg (2.4 lb) typical, without fittings

One distinctive spec is the 2.8 in probe penetration, which allows deep insertion into machine casings for accurate proximity measurements. This feature reduces signal noise and enhances reliability in vibration monitoring applications.

Applications and Use Cases for the 21000-34-00-20-018-04-02

In petrochemical plants, the 21000-34-00-20-018-04-02 monitors shaft vibration in large pumps and compressors. Its CSA Type 4 enclosure rating makes it suitable for outdoor installations exposed to dust and water. For power generation facilities, this housing assembly integrates seamlessly with existing Bently Nevada monitoring systems. The 2.0 in standoff adapter simplifies mounting on standard brackets, reducing installation time. Additionally, the selectable hazardous area approvals allow use in gas processing units where safety is paramount.

Installation and Setup of the 21000-34-00-20-018-04-02

Setting up the 21000-34-00-20-018-04-02 requires attention to the mounting thread specification. The -02 option mandates a 3/4-14 NPT thread, which must be ordered if the standoff adapter length is not -00. The housing includes a dome cover that screws into the body, threaded ports for conduit connections, and O-rings for sealing. For hazardous area installations, ensure the probe option 34 (with connector protector) is selected. Always follow Bently Nevada's installation manual for proper torque values and cable routing.

Maintenance and Reliability of the 21000-34-00-20-018-04-02

Regular inspection of the 21000-34-00-20-018-04-02 extends its service life. Check O-rings for wear during routine maintenance to prevent moisture ingress. The aluminum body resists corrosion, but periodic cleaning with a dry cloth keeps the housing free of debris. For long-term reliability, verify that the 3/4-14 NPT fittings remain tight. This proactive approach minimizes downtime and reduces replacement costs, aligning with cost-benefit goals.

Compatibility and Integration for the 21000-34-00-20-018-04-02

The 21000-34-00-20-018-04-02 works with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. The housing accepts optional conduit fittings and standoff adapters for flexible integration. For intrinsically safe applications, order hazardous area approved probes with this housing. Always confirm system compatibility with your Bently Nevada representative.

Frequently Asked Questions about the 21000-34-00-20-018-04-02

Q: What is the probe penetration length for the 21000-34-00-20-018-04-02?

A: The probe penetration is 2.8 in, as indicated by suffix code 018.

Q: Does the 21000-34-00-20-018-04-02 include a cable?

A: No, the probe cable is not required (suffix 00). You must order it separately if needed.

Q: What mounting thread does the 21000-34-00-20-018-04-02 use?

A: It uses a 3/4-14 NPT thread, which is mandatory when the standoff adapter length is not -00.

Q: Is the 21000-34-00-20-018-04-02 suitable for hazardous areas?

A: Yes, with the 34 probe option, it supports selectable hazardous area approvals. Only CA versions are explosion-proof by CSA with specific options.

Q: What is the weight of the 21000-34-00-20-018-04-02 housing?

A: It weighs approximately 1.1 kg (2.4 lb) typical, without fittings.

Product Support and Availability

The 21000-34-00-20-018-04-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. For current lifecycle status and ordering details, contact Petro Auto Tech directly. In stock and ready to ship, this housing assembly supports your critical machinery monitoring needs.