21000-34-05-00-039-04-02 | Bently Nevada 0.5 m Cable Proximity Probe Housing Assembly

Introduction to the 21000-34-05-00-039-04-02 Proximity Probe Housing Assembly

When machinery reliability demands precise vibration monitoring, the 21000-34-05-00-039-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for externally mounted probes in industrial environments. It provides a secure enclosure for the 3300 XL 8 mm probe, ensuring consistent measurement in harsh conditions. Maintenance engineers appreciate its straightforward installation and durable construction.

The assembly includes an aluminum body with a 304 stainless steel sleeve, offering corrosion resistance and mechanical strength. It weighs approximately 1.1 kg (2.4 lb) without fittings, making it manageable for field installation. The unit supports hazardous area approvals when ordered with specific options, adding flexibility for safety-critical applications.

Key Features and Technical Specifications of the 21000-34-05-00-039-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in).
• Probe Penetration: 3.9 in (039 suffix).
• Fitting Option: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT (required when standoff adapter is not used).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 13.5 in (34.3 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• CSA Approval: Available for explosion-proof and intrinsically safe applications when ordered with specific options.

A distinctive feature is the 0.5 m probe cable, which simplifies wiring in tight spaces. This short cable reduces signal loss and minimizes installation time, directly supporting maintenance efficiency.

Real-World Applications for the 21000-34-05-00-039-04-02

This housing assembly is ideal for monitoring rotating machinery such as pumps, compressors, and turbines. It meets the API 670 standard for externally mounted proximity probes, making it suitable for refinery and petrochemical applications. The CSA Type 4 enclosure rating ensures protection against dust and water ingress. In addition, the selectable hazardous area approvals allow use in explosive environments. Maintenance teams can rely on this assembly for accurate vibration data, reducing unplanned downtime.

Installation and Setup Guidance

Mount the housing using the 3/4-14 NPT thread option for secure attachment. Ensure the probe sleeve length matches the required clearance. The assembly includes 0-rings and a thread seal for leak-proof installation. Use the provided conduit fittings for cable routing. Always follow the manufacturer's manual for torque specifications and wiring details. Proper mounting ensures reliable probe positioning and consistent measurements.

Maintenance and Reliability Tips

Inspect the housing periodically for signs of wear or corrosion, especially in harsh environments. Verify that the 0-rings and seals remain intact to maintain enclosure integrity. The aluminum and stainless steel construction resists environmental damage, extending service life. Regular inspection per the manufacturer's guidelines helps prevent unexpected failures. This proactive approach aligns with cost-saving strategies by reducing emergency repairs.

Compatibility and Integration

The 21000-34-05-00-039-04-02 works with Bently Nevada monitoring systems that accept 3300 XL 8 mm probes. It integrates seamlessly with existing vibration monitoring networks. The CSA approval ensures compliance with safety standards when used with approved barriers. For specific system compatibility, refer to the official Bently Nevada documentation.

Frequently Asked Questions about the 21000-34-05-00-039-04-02

What is the probe cable length for the 21000-34-05-00-039-04-02?

The probe cable length is 0.5 m (20 in), as indicated by the 05 suffix in the part number.

What mounting thread does this housing assembly require?

It requires a 3/4-14 NPT mounting thread when the standoff adapter option is not selected.

Is the 21000-34-05-00-039-04-02 suitable for hazardous areas?

Yes, when ordered with specific options (E:00, E:01, E:02, or E:04), the CSA-rated version is explosion-proof.

What material is the housing body made of?

The housing body is aluminum with a 304 stainless steel sleeve for durability and corrosion resistance.

What is the weight of this assembly?

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

Product Support and Availability

The 21000-34-05-00-039-04-02 is available as a new and original factory-packed unit from Petro Auto Tech. It comes with a 12-month factory warranty. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.