21000-34-00-00-050-04-02 | Bently Nevada 5.0 in Probe Housing Assembly

Introduction to the 21000-34-00-00-050-04-02

When machinery vibration threatens production uptime, the 21000-34-00-00-050-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for hazardous area monitoring. It features a 5.0 inch probe penetration and a 3/4-14 NPT mounting thread. The aluminum body with a 304 stainless steel sleeve ensures durability in harsh environments.

Key Features and Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Penetration: 5.0 inches (050 suffix).
• Mounting Thread: 3/4-14 NPT (suffix -02).
• Fitting Option: One 3/4-14 NPT plug only (suffix 04).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Material: Aluminum body with 304 stainless steel sleeve.
• Certification: CSA Type 4 enclosure, explosion-proof for hazardous areas (with appropriate options).

A standout feature is the 5.0 inch probe penetration, which allows deep insertion into bearing housings for accurate vibration readings. This spec directly impacts measurement reliability in tight spaces.

Real-World Applications

In oil and gas refineries, the 21000-34-00-00-050-04-02 monitors compressor vibrations to prevent catastrophic failures. Similarly, power generation plants use it for turbine shaft monitoring. Its CSA explosion-proof rating makes it ideal for Class I, Division 1 hazardous locations. The aluminum housing resists corrosion in chemical processing environments.

Installation Guide

Mount the housing using the 3/4-14 NPT thread into a pre-tapped hole. Ensure the probe sleeve length matches the required gap. Use the supplied 3/4-14 NPT plug for unused ports. For explosion-proof installations, select the appropriate CA version with E:00, E:01, E:02, or E:04 options. Always follow Bently Nevada's torque specifications.

Routine Care and Reliability

Inspect the O-rings and thread seal annually for wear. Clean the probe tip with a soft cloth to remove debris. Verify the connector protector is secure. The 304 stainless steel sleeve resists mechanical damage, extending service life. Regular inspection reduces unplanned downtime and lowers maintenance costs.

Compatibility and Integration

The 21000-34-00-00-050-04-02 works with Bently Nevada 3300 XL 8 mm proximity probes. It integrates with vibration monitoring systems that accept 8 mm probes. The housing is fully compliant with API 670 standard for externally mounted proximity probe housings. For intrinsically safe applications, pair with hazardous area approved probes.

Troubleshooting Common Issues

If vibration readings are erratic, check the probe cable connection. A loose connector protector can cause signal loss. Ensure the mounting thread is properly sealed to prevent moisture ingress. For probe damage, replace the 3300 XL 8 mm probe. Refer to the Bently Nevada manual for detailed diagnostics.

FAQs about the 21000-34-00-00-050-04-02

What is the probe penetration length of this housing?

The 21000-34-00-00-050-04-02 has a 5.0 inch probe penetration (suffix 050).

Is this housing explosion-proof?

Yes, when ordered with CA version and E:00, E:01, E:02, or E:04 options, it is CSA rated explosion-proof.

What material is the housing made of?

The body is aluminum with a 304 stainless steel sleeve.

What mounting thread does it use?

It uses a 3/4-14 NPT thread (suffix -02).

What probe does it accept?

It accepts a 3300 XL 8 mm probe with connector protector.

Product Support and Availability

The 21000-34-00-00-050-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We provide factory warranty and original packaging.