21000-34-10-20-028-04-02 | Bently Nevada 8 mm Probe Housing Assembly

What Makes the 21000-34-10-20-028-04-02 Essential for Vibration Monitoring?

When machinery reliability depends on precise vibration data, the 21000-34-10-20-028-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is designed for externally mounted probes in demanding industrial environments. It combines an aluminum body with a 304 stainless steel sleeve for durability and corrosion resistance. The assembly supports a 3300 XL 8 mm probe with connector protector, making it suitable for selectable hazardous area approvals. With a typical weight of 1.1 kg (2.4 lb) without fittings, it offers a compact yet sturdy design.

Key Features and Technical Specs of the 21000-34-10-20-028-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector for selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Standoff Adapter: 2.0 in for precise probe positioning.
• Probe Penetration: 2.8 in (028) to accommodate various machine configurations.
• Fitting Option: 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 strength and corrosion resistance.
• Maximum Dimension (C + D): 32.9 in (83.5 cm) with visible probe P/N and S/N.

One distinctive spec is the 2.8 in probe penetration, which allows the sensor to reach optimal measurement points inside the machine. This ensures accurate vibration data collection for predictive maintenance. The 1.0 m cable length provides flexibility for routing in tight spaces.

Real-World Applications for the Bently Nevada 21000-34-10-20-028-04-02

This housing assembly is ideal for monitoring rotating machinery such as turbines, compressors, and pumps. It meets API 670 standards for externally mounted proximity probes, ensuring compliance in critical applications. The CSA Type 4 enclosure rating makes it suitable for outdoor or washdown environments. Additionally, the explosion-proof rating (with appropriate options) allows use in hazardous areas where flammable gases or dusts may be present.

Installation Guide for the 21000-34-10-20-028-04-02

Mount the housing using the 3/4-14 NPT thread for a secure connection. Ensure the standoff adapter length (2.0 in) matches the required probe gap. Route the 1.0 m probe cable through the conduit fitting, and tighten the NPT plug to prevent leaks. Verify that the probe tip is positioned at the correct penetration depth (2.8 in) for optimal sensitivity. Always follow the manufacturer's manual for torque specifications and wiring details.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to maintain the enclosure's integrity. Check the probe cable for cuts or abrasions, especially near the connector. Clean the exterior with a damp cloth to remove debris. For hazardous area installations, verify that the explosion-proof fittings remain intact. These steps help extend the service life and ensure reliable vibration monitoring.

Compatibility and Integration

The 21000-34-10-20-028-04-02 is compatible with Bently Nevada monitoring systems that accept 8 mm proximity probes. It works with 3300 XL series probes and can be integrated into existing vibration monitoring networks. The assembly supports CSA Type 4 enclosures and is fully compliant with API 670 standards. For system-specific integration, refer to the official Bently Nevada documentation.

Frequently Asked Questions About the 21000-34-10-20-028-04-02

Q: What is the probe cable length for this housing assembly?

A: The probe cable length is 1.0 m (39 in) as specified by suffix code 10.

Q: Is this housing assembly suitable for hazardous areas?

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

Q: What is the typical weight of the 21000-34-10-20-028-04-02?

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

Q: What mounting thread does this assembly use?

A: It uses a 3/4-14 NPT mounting thread, as indicated by suffix code -02.

Q: Can I use this housing with other probe types?

A: It is designed for the 3300 XL 8 mm probe with connector protector. For other probes, consult Bently Nevada documentation.

Product Support and Availability

The Bently Nevada 21000-34-10-20-028-04-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. In stock and ready to ship, this assembly supports your vibration monitoring needs. Contact Petro Auto Tech for ordering and availability details.