21000-34-05-15-018-04-02 | Bently Nevada 8 mm Proximity Probe Housing Assembly

What Makes the 21000-34-05-15-018-04-02 Essential for Vibration Monitoring?

When rotating machinery demands precise shaft vibration measurement, the 21000-34-05-15-018-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is engineered for industrial environments where accuracy and durability are non-negotiable. Part of the trusted 21000 series, it integrates a 3300 XL 8 mm probe with connector protector, ensuring reliable data collection in critical applications.

With a 0.5 m (20 in) probe cable length, a 1.5 in standoff adapter, and 1.8 in probe penetration, this model meets specific mounting requirements. The aluminum body with a 304 stainless steel sleeve provides corrosion resistance and structural integrity. Weighing 1.1 kg (2.4 lb) typical without fittings, it is designed for easy handling and installation.

Key Features and Technical Specifications of the 21000-34-05-15-018-04-02

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals
• Probe Cable Length: 0.5 m (20 in)
• Standoff Adapter: 1.5 in
• Probe Penetration: 1.8 in
• Fitting Option: One 3/4-14 NPT plug only
• Mounting Thread: 3/4-14 NPT (required if standoff adapter length is not -00)
• 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

A standout feature is the CSA explosion-proof rating for CA versions when ordered with specific options (E:00, E:01, E:02, or E:04). This certification ensures safe operation in hazardous areas, a critical advantage for oil and gas or chemical plants.

Real-World Applications for the Bently Nevada 21000-34-05-15-018-04-02

This housing assembly excels in monitoring shaft vibration and position in turbines, compressors, and pumps. Its 8 mm probe and 1.5 in standoff adapter allow precise gap setting, while the 304 stainless steel sleeve withstands harsh environments. In petrochemical facilities, the CSA Type 4 enclosure rating provides peace of mind against dust and moisture ingress. Additionally, compliance with API 670 Standard ensures compatibility with externally mounted proximity probe housings in critical machinery protection systems.

Installation and Setup Guide

Mount the 21000-34-05-15-018-04-02 using the 3/4-14 NPT thread option for secure conduit connections. The standoff adapter of 1.5 in and probe penetration of 1.8 in must be verified against shaft clearance requirements. Ensure the probe cable (0.5 m) is routed without sharp bends to maintain signal integrity. For hazardous area installations, select the appropriate approval option and follow local electrical codes. Always consult the Bently Nevada manual for torque specifications on fittings.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear to prevent moisture ingress. The aluminum body with stainless steel sleeve requires minimal maintenance but should be checked for corrosion in aggressive environments. Periodic verification of the probe gap and cable condition ensures consistent performance. Following these steps extends service life and reduces unplanned downtime, aligning with a cost-effective maintenance strategy.

Compatibility and Integration

The 21000-34-05-15-018-04-02 integrates seamlessly with Bently Nevada monitoring systems and third-party vibration analyzers. Its 8 mm probe is compatible with standard proximity probe drivers and extension cables. The CSA Type 4 enclosure allows use in outdoor or washdown areas, while the API 670 compliance ensures interchangeability with existing installations. For system integration, confirm the probe cable length and connector type with your controller.

Troubleshooting Common Issues

If erratic readings occur, first check the probe cable for damage or loose connections. Verify the standoff adapter and probe penetration are set correctly per the installation guide. In noisy environments, ensure the conduit fittings are properly grounded. For CSA-rated explosion-proof housings, confirm the correct option (E:00, E:01, E:02, or E:04) was ordered to maintain certification. If issues persist, consult Bently Nevada technical support.

Frequently Asked Questions about the 21000-34-05-15-018-04-02

Q: What is the probe cable length for the 21000-34-05-15-018-04-02?

A: The probe cable length is 0.5 m (20 in), as specified by the suffix code 05.

Q: Is the 21000-34-05-15-018-04-02 suitable for hazardous areas?

A: Yes, when ordered with the appropriate hazardous area approval option (e.g., E:00, E:01, E:02, or E:04), the CA version of the housing is rated explosion-proof by CSA.

Q: What is the mounting thread option for this model?

A: The mounting thread option is 3/4-14 NPT, which must be ordered if the standoff adapter length option is not -00.

Q: What materials are used in the 21000-34-05-15-018-04-02 housing?

A: The housing features an aluminum body with a 304 stainless steel sleeve for durability and corrosion resistance.

Q: What is the maximum (C) + (D) dimension of this assembly?

A: The maximum (C) + (D) dimension is 13.5 in (34.3 cm) with the visible probe part number and serial number not visible.

Product Support and Availability

The 21000-34-05-15-018-04-02 is available as new and original in factory packing from Petro Auto Tech. In stock and ready to ship, it comes with a 12-month factory warranty. Contact Petro Auto Tech for lifecycle status and ordering assistance.