21000-34-05-30-030-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

Introduction: Solving Vibration Monitoring Challenges with the 21000-34-05-30-030-04-02

When rotating machinery in hazardous areas demands precise vibration measurement, the 21000-34-05-30-030-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is engineered for externally mounted probes in demanding industrial environments. With a 0.5-meter probe cable and 3.0-inch standoff adapter, it offers flexibility for tight installations. The aluminum body with a 304 stainless steel sleeve ensures durability against corrosion and mechanical stress. This assembly meets CSA Type 4 enclosure standards and complies with API 670 for external mounting.

Key Features & Technical Specs of the 21000-34-05-30-030-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector for selectable hazardous area approvals.
• Probe Cable Length: 0.5 meters (20 inches) for compact routing.
• Standoff Adapter: 3.0 inches to position the probe accurately.
• Probe Penetration: 3.0 inches into the housing.
• Fitting Option: One 3/4-14 NPT plug only; explosion-proof fittings available for CA versions.
• Mounting Thread: 3/4-14 NPT required when standoff adapter is not -00.
• Material: Aluminum body with 304 stainless steel sleeve for strength and corrosion resistance.
• Maximum (C) + (D) Dimension: 13.5 inches (34.3 cm) with probe visible.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

One distinctive spec is the 0.5-meter probe cable, which simplifies installation in confined spaces and reduces signal loss over short distances. This feature is critical for retrofitting existing machinery where cable routing is limited.

Industry Applications & Use Cases

In petrochemical plants, the 21000-34-05-30-030-04-02 monitors shaft vibration on pumps and compressors. Its CSA explosion-proof rating makes it suitable for Class I, Division 1 hazardous areas. For example, a refinery using this assembly can reduce unplanned downtime by detecting bearing wear early. Additionally, the API 670 compliance ensures compatibility with standard vibration monitoring systems. This housing is also ideal for steam turbines and gearboxes where external probe mounting is required.

Installation & Setup Guide

Mount the housing using the 3/4-14 NPT thread option. Ensure the standoff adapter is set to 3.0 inches for correct probe gap. Route the 0.5-meter cable through conduit to the monitoring system. For explosion-proof installations, use CA-rated housings with approved fittings. Verify the probe is visible for proper identification. Always follow Bently Nevada's manual for torque specifications and sealant application.

Maintenance & Reliability Tips

Inspect the O-rings and thread seal annually to prevent moisture ingress. Clean the stainless steel sleeve with a dry cloth; avoid solvents. Check the connector protector for damage. The aluminum body resists corrosion in most environments. Regular calibration of the proximity probe ensures accurate readings. By following these steps, you extend the service life of the 21000-34-05-30-030-04-02 and reduce replacement costs.

Compatibility & Integration

This housing works with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It integrates with vibration analyzers and data acquisition units that accept standard proximity probe signals. The CSA Type 4 enclosure allows outdoor installation. For hazardous areas, pair with intrinsically safe barriers. Always verify system compatibility with Petro Auto Tech before ordering.

FAQs about the 21000-34-05-30-030-04-02

Q: What is the probe cable length for the 21000-34-05-30-030-04-02?

A: The probe cable length is 0.5 meters (20 inches).

Q: Is this housing explosion-proof?

A: Only CA versions of the housing are rated explosion-proof by CSA when ordered with specific options. Standard versions require explosion-proof fittings.

Q: What is the weight of the assembly without fittings?

A: The typical weight is 1.1 kg (2.4 lb).

Q: What standards does this housing comply with?

A: It complies with CSA Type 4 enclosure and API 670 Standard for externally mounted proximity probe housings.

Q: Can I use this housing with a 3300 XL 8 mm probe?

A: Yes, the probe option 34 specifies a 3300 XL 8 mm probe with connector protector.

Product Support & Availability

The 21000-34-05-30-030-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for lead times and bulk pricing. We provide original factory-packed units with a 12-month warranty.