21000-34-00-30-065-04-02 | Bently Nevada 3.0 in Standoff Adapter Proximity Probe Housing

Buyer's Guide: Evaluating the 21000-34-00-30-065-04-02 Proximity Probe Housing Assembly

When selecting a proximity probe housing for critical machinery protection, the 21000-34-00-30-065-04-02 from Bently Nevada stands out for its robust construction and precise specifications. This guide helps you assess whether this model meets your application requirements by examining its key features, installation considerations, and long-term value.

Core Specifications and Construction

The 21000-34-00-30-065-04-02 features an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh environments. It includes a 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals. The standoff adapter measures 3.0 inches, and the probe penetration is 6.5 inches. A single 3/4-14 NPT plug fitting is included, and the mounting thread is 3/4-14 NPT. The probe cable length is 1.0 meter, with maximum dimensions of 17.0 inches (43.18 cm) visible probe length and 32.9 inches (83.5 cm) total length. The assembly weighs approximately 1.1 kg (2.4 lb) without fittings.

Key Performance Metrics

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Standoff Adapter: 3.0 inches for precise positioning.
• Probe Penetration: 6.5 inches for deep measurement.
• Fitting: One 3/4-14 NPT plug for conduit connection.
• Mounting Thread: 3/4-14 NPT for secure installation.
• Material: Aluminum body with 304 stainless steel sleeve for corrosion resistance.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A distinctive feature of this model is the 3.0-inch standoff adapter, which provides optimal clearance for probe installation in tight spaces. This spec directly impacts measurement accuracy by ensuring the probe tip is correctly positioned relative to the target surface.

Real-World Applications and Use Cases

In rotating machinery monitoring, the 21000-34-00-30-065-04-02 excels at measuring shaft vibration and position. Its CSA Type 4 enclosure rating makes it suitable for outdoor and washdown environments. For example, in a refinery, this housing protects the probe from moisture and contaminants while maintaining reliable data transmission. Additionally, its API 670 compliance ensures compatibility with industry-standard vibration monitoring systems.

Installation and Setup Considerations

Mounting the 21000-34-00-30-065-04-02 requires a 3/4-14 NPT threaded hole. The standoff adapter must be ordered if the probe penetration option is not -00. Ensure the probe cable length (1.0 m) is sufficient for your routing. For hazardous areas, use only CSA-approved versions with appropriate fittings. Always follow the manufacturer's manual for torque specifications and sealing procedures.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to maintain enclosure integrity. The aluminum and stainless steel construction resists corrosion, extending service life. For cost-benefit analysis, this housing reduces downtime by providing reliable probe protection, minimizing false alarms and unplanned maintenance. Verify the probe cable and connector are secure during routine checks.

Compatibility and Integration

The 21000-34-00-30-065-04-02 is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. It integrates seamlessly with Bently Nevada monitoring systems and is fully compliant with API 670 standards. The CSA Type 4 enclosure rating ensures compatibility with hazardous area installations when ordered with appropriate options.

Frequently Asked Questions

Q: What is the maximum probe cable length for the 21000-34-00-30-065-04-02?

A: The probe cable length is 1.0 meter as specified in the ordering information.

Q: Is the 21000-34-00-30-065-04-02 suitable for hazardous areas?

A: Yes, it is available with CSA approvals for explosion-proof and intrinsically safe applications when ordered with appropriate options.

Q: What is the weight of the 21000-34-00-30-065-04-02 without fittings?

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

Q: What mounting thread does the 21000-34-00-30-065-04-02 require?

A: It requires a 3/4-14 NPT mounting thread.

Product Support and Availability

The 21000-34-00-30-065-04-02 is available as new and original in factory packing from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship with a 12-month factory warranty.