21000-34-00-00-066-03-02 | Bently Nevada 8 mm Probe Housing Assembly

What Is the 21000-34-00-00-066-03-02?

When hazardous area conditions demand reliable vibration monitoring, the 21000-34-00-00-066-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for externally mounted probes in industrial environments. It includes a 3300 XL 8 mm probe with connector protector, a 6.6-inch probe penetration, and a 1.0-meter probe cable. The housing features an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh settings.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (probe cable not required with this suffix).
• Probe Penetration: 6.6 inches (066 suffix).
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes 1/8 to 3/8 inches.
• Mounting Thread: 3/4-14 NPT (suffix -02).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum Dimension (C + D): 32.9 in (83.5 cm) with visible probe P/N and S/N up to 17.0 in (43.18 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A distinctive spec is the 8 mm probe size, which allows precise measurement in tight spaces while maintaining API 670 compliance.

Real-World Applications

In oil refineries and chemical plants, the 21000-34-00-00-066-03-02 monitors shaft vibration on pumps and compressors. Its CSA Type 4 enclosure and explosion-proof rating make it suitable for Class I, Division 1 hazardous areas. Additionally, it meets API 670 standards for externally mounted proximity probe housings, ensuring reliable performance in critical rotating machinery.

Setup & Mounting Guide

Mount the housing using the 3/4-14 NPT thread option. Ensure the probe sleeve is properly inserted into the machine casing. Connect conduit via the threaded ports. Use the supplied cable seal grip and grommets to secure the probe cable. Verify that the probe penetration depth matches the 6.6-inch specification. Always follow the manufacturer's manual for torque values and wiring details.

Routine Care & Reliability

Inspect the housing periodically for signs of corrosion or damage. Check the O-rings and thread seal for integrity. Keep the probe tip clean and free of debris. Regular maintenance extends service life and reduces unplanned downtime, aligning with cost-benefit goals.

Compatibility & Integration

The 21000-34-00-00-066-03-02 works with Bently Nevada monitoring systems that accept 8 mm proximity probes. It is compatible with standard 3/4-14 NPT conduit fittings. The housing supports both hazardous area approved and intrinsically safe probe configurations. For system integration, consult the Bently Nevada documentation for compatible monitors and cables.

Common Questions

Q: What is the probe penetration length of the 21000-34-00-00-066-03-02?

A: The probe penetration is 6.6 inches, as indicated by the 066 suffix code.

Q: Is this housing suitable for hazardous areas?

A: Yes, it is CSA approved as explosion proof and rated CSA Type 4 enclosure.

Q: What mounting thread does this assembly use?

A: It uses a 3/4-14 NPT thread, specified by the -02 suffix.

Q: Does the housing come with a probe cable?

A: No, the probe cable is not required for this suffix (00 code).

Q: What is the typical weight of the assembly?

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

Product Support & Availability

The 21000-34-00-00-066-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for current lifecycle status and ordering assistance.