21000-34-00-30-065-03-02 | Bently Nevada 6.5 in Probe Housing Assembly

What Makes the Bently Nevada 21000-34-00-30-065-03-02 Essential for Vibration Monitoring?

When machinery reliability depends on precise vibration measurement, the 21000-34-00-30-065-03-02 from Bently Nevada delivers 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, ensuring durability against corrosion and mechanical stress. The assembly supports a 3300 XL 8 mm probe with connector protector, making it suitable for hazardous area approvals. With a typical weight of 1.1 kg (2.4 lb) without fittings, it offers a compact yet rugged form factor for easy installation.

Key Features and Technical Specs of the 21000-34-00-30-065-03-02

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Probe Cable Length: 1.0 m.
• Standoff Adapter: 3.0 (option 30).
• Probe Penetration: 6.5 in (option 065).
• Fitting Option: Includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with grommets for cable sizes 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.
• Mounting Thread: 3/4-14 NPT (option -02).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum Dimensions: (C) + (D) with visible probe P/N and S/N: 17.0 in (43.18 cm); maximum (C) + (D) dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

One distinctive spec is the 6.5 in probe penetration, which allows the sensor to reach deep into machine casings for accurate proximity measurements. This feature minimizes signal interference and enhances reliability in rotating equipment monitoring.

Real-World Applications for the 21000-34-00-30-065-03-02

In industries such as oil and gas, power generation, and petrochemical processing, the 21000-34-00-30-065-03-02 excels at monitoring shaft vibration and position in turbines, compressors, and pumps. Its CSA Type 4 enclosure rating and API 670 compliance make it ideal for hazardous areas where explosion-proof performance is critical. For example, in a refinery, this housing assembly can withstand harsh conditions while delivering consistent data for predictive maintenance programs, reducing unplanned downtime.

Installation and Setup Guidance

Mount the 21000-34-00-30-065-03-02 using the 3/4-14 NPT mounting thread, ensuring proper alignment with the machine casing. The standoff adapter (option 30) provides a 3.0 offset for optimal probe positioning. Use the included fitting kit to secure conduit connections and cable seal grip, selecting the appropriate grommet for your cable diameter. Always follow Bently Nevada's installation manual for torque specifications and clearance requirements.

Routine Care and Reliability Tips

Regular inspection of the housing assembly helps maintain measurement accuracy. Check O-rings and thread seals for wear during scheduled maintenance intervals. The aluminum and stainless steel construction resists corrosion, but periodic cleaning of the probe tip and connector is recommended per manufacturer guidelines. Environmental factors like extreme temperatures or vibration should be monitored to ensure long-term performance.

Compatibility and Integration

The 21000-34-00-30-065-03-02 integrates seamlessly with Bently Nevada monitoring systems and data acquisition platforms. It accepts a 3300 XL 8 mm proximity probe, which connects via a 1.0 m cable. The assembly supports CSA hazardous area approvals, making it compatible with intrinsically safe installations. For system integration, refer to the official Bently Nevada documentation for wiring and configuration details.

Frequently Asked Questions About the 21000-34-00-30-065-03-02

Q: What is the probe penetration length of this housing assembly?

A: The probe penetration is 6.5 in (option 065), as specified in the ordering information.

Q: What mounting thread does the 21000-34-00-30-065-03-02 use?

A: It uses a 3/4-14 NPT mounting thread (option -02), which must be ordered if the standoff adapter length option is not -00.

Q: Is this housing assembly suitable for hazardous areas?

A: Yes, it is available with CSA approvals and rated explosion proof for hazardous areas. It also supports intrinsically safe applications with approved probes.

Q: What is the weight of the 21000-34-00-30-065-03-02?

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

Q: What materials are used in the housing construction?

A: The body is aluminum, and the sleeve is 304 stainless steel, providing corrosion resistance and durability.

Product Support and Availability

The Bently Nevada 21000-34-00-30-065-03-02 is available as a new and original item in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.