21000-34-10-20-050-04-02 | Bently Nevada 8 mm Probe Housing Assembly

What Is the 21000-34-10-20-050-04-02?

When monitoring rotating machinery in hazardous environments, the 21000-34-10-20-050-04-02 provides a robust solution. This Bently Nevada proximity probe housing assembly is engineered for reliable vibration and position sensing. It features an aluminum body with a 304 stainless steel sleeve. The assembly includes a 3300 XL 8 mm probe with a connector protector. It also comes with a 1.0 m (39 in) probe cable. This model is part of the 21000 series. It is designed for external mounting per API 670 standards.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 2.0 in.
• Probe Penetration: 5.0 in.
• Fitting Option: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• CSA Rating: Explosion proof for hazardous areas; CSA Type 4 enclosure.

One distinctive spec is the 8 mm probe size. This allows precise measurement in tight installations. The 1.0 m cable offers flexibility for routing. The 2.0 in standoff adapter ensures proper gap setting. These features combine to deliver accurate, stable readings.

Real-World Applications

This housing assembly suits critical machinery like turbines, compressors, and pumps. In oil and gas facilities, it monitors shaft vibration and thrust position. The explosion-proof rating makes it ideal for Class I, Division 1 areas. It also meets API 670 requirements for externally mounted probes. Engineers choose it for its rugged construction and reliable performance.

Installation Guide

Mount the housing using the 3/4-14 NPT thread. Ensure the probe penetration of 5.0 in aligns with the target. Use the included 3/4-14 NPT plug for unused ports. For explosion-proof installations, order the appropriate CA version. Follow Bently Nevada guidelines for wiring and grounding. Verify the standoff adapter length matches your application.

Routine Care

Inspect the O-rings and thread seal periodically. Check for signs of corrosion or wear on the aluminum body and stainless steel sleeve. Clean the probe tip gently with a soft cloth. Avoid solvents that could damage the connector protector. Verify the cable integrity and connector tightness. Regular inspection helps maintain long-term reliability.

Compatible Systems

This assembly works with Bently Nevada 3300 XL proximity probe systems. It integrates with monitors like the 3500 series. The 8 mm probe connects to standard extension cables. Use it with any system requiring 8 mm proximity probes. For specific compatibility, consult the Bently Nevada documentation.

FAQs about 21000-34-10-20-050-04-02

Q: What is the probe cable length?

A: The probe cable length is 1.0 m (39 in).

Q: Is this housing explosion-proof?

A: Yes, the CA version is rated explosion-proof by CSA for hazardous areas.

Q: What is the mounting thread size?

A: The mounting thread is 3/4-14 NPT.

Q: What material is the housing made of?

A: The housing has an aluminum body with a 304 stainless steel sleeve.

Q: What is the weight of this assembly?

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

Product Support & Availability

The 21000-34-10-20-050-04-02 is available from Petro Auto Tech. It ships as new and original in factory packing. Please verify current lifecycle status and availability before ordering.