21000-34-10-20-030-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the Bently Nevada 21000-34-10-20-030-04-02

When critical machinery demands precise vibration monitoring, the 21000-34-10-20-030-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is designed for harsh industrial environments, featuring an aluminum body with a 304 stainless steel sleeve. It supports a 3300 XL 8 mm probe with connector protector, making it suitable for selectable hazardous area approvals. Engineers seeking a reliable housing for reverse mount proximity probes will find this model meets rigorous API 670 standards.

Key Features and Technical Specs of the 21000-34-10-20-030-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 2.0 in.
• Probe Penetration: 3.0 in.
• Fitting Option: One 3/4-14 NPT plug.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) with visible probe P/N and S/N.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Temperature Range (3300 XL 8 mm Probe): -51°C to +177°C (-60°F to +351°F) operating and storage.

A standout spec is the wide temperature range of -51°C to +177°C, which ensures reliable performance in extreme conditions, from freezing environments to high-heat applications.

Applications and Use Cases

In rotating machinery monitoring, the 21000-34-10-20-030-04-02 excels. It is ideal for compressors, turbines, and pumps where external proximity probe housing is required. The assembly’s CSA Type 4 enclosure rating and compliance with API 670 make it a trusted choice for oil and gas, power generation, and petrochemical industries. Additionally, its selectable hazardous area approvals allow use in intrinsically safe applications, reducing risk in explosive atmospheres.

Installation and Setup Guide

Mounting the 21000-34-10-20-030-04-02 requires a 3/4-14 NPT threaded connection. The standoff adapter length is set to 2.0 in, and the probe penetration is 3.0 in. Ensure the probe cable length of 1.0 m is sufficient for your routing. For explosion-proof installations, use CA versions of the housing with specified options. Always follow Bently Nevada’s installation manual for proper torque and alignment.

Maintenance and Reliability Tips

Regular inspection of the O-rings and thread seal is recommended to maintain the housing’s environmental integrity. The aluminum and stainless steel construction resists corrosion, but periodic checks for wear or damage to the probe sleeve and dome cover ensure long-term reliability. Given the wide temperature tolerance, the assembly can withstand thermal cycling without performance loss.

Compatibility and Integration

This housing is designed for Bently Nevada 3300 XL 8 mm proximity probes and is fully compatible with the 21000 series system. It integrates seamlessly with Bently Nevada monitoring systems that accept reverse mount probes. The CSA Type 4 enclosure ensures compatibility with standard industrial conduit fittings.

Frequently Asked Questions About the 21000-34-10-20-030-04-02

Q: What is the maximum cable length for this housing?

A: The probe cable length is 1.0 m (39 in) as specified in the ordering information.

Q: Is this housing suitable for hazardous areas?

A: Yes, the 3300 XL 8 mm probe with connector protector offers selectable hazardous area approvals. CA versions are rated explosion-proof by CSA.

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

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

Q: Can this housing be used with other probe types?

A: It is designed for the 3300 XL 8 mm probe. For other probes, refer to Bently Nevada documentation.

Q: What is the operating temperature range?

A: For the 3300 XL 8 mm probe, the range is -51°C to +177°C (-60°F to +351°F) for both operating and storage.

Product Support and Availability

The Bently Nevada 21000-34-10-20-030-04-02 is in stock and ready to ship from Petro Auto Tech. As a trusted industrial automation parts supplier, we offer new and original factory-packed units with a 12-month warranty. Contact us for lifecycle status and availability before ordering.