21000-34-00-00-066-04-02 | Bently Nevada 8 mm Probe Housing Assembly

What Is the Bently Nevada 21000-34-00-00-066-04-02?

When industrial machinery requires precise vibration monitoring, the 21000-34-00-00-066-04-02 from Bently Nevada offers a durable solution. This proximity probe housing assembly is part of the 21000 series, built with an aluminum body and a 304 stainless steel sleeve. It includes a 3300 XL 8 mm probe with a connector protector, making it suitable for hazardous area approvals. The assembly weighs 1.1 kg (2.4 lb) without fittings and supports a maximum probe cable length of 1.0 m.

Key Features and Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Penetration: 6.6 in (066 suffix).
• Fitting Option: One 3/4-14 NPT plug (04 suffix).
• Mounting Thread: 3/4-14 NPT (-02 suffix).
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) with visible probe P/N and S/N.
• Maximum (C) + (D) with Visible Probe: 17.0 in (43.18 cm).

A distinctive spec is the 6.6 in probe penetration, which allows deep insertion into machinery for accurate proximity measurements. This feature ensures reliable data collection in tight spaces.

Applications and Use Cases

Engineers in oil and gas, power generation, and manufacturing rely on the 21000-34-00-00-066-04-02 for vibration monitoring on rotating equipment. For example, it excels in monitoring compressor bearings and turbine shafts. Its CSA Type 4 enclosure rating makes it ideal for hazardous environments. Additionally, the assembly complies with API 670 standards, ensuring compatibility with existing monitoring systems.

Installation and Setup

Mounting the assembly requires a 3/4-14 NPT thread for secure attachment. Ensure the probe cable length of 1.0 m is sufficient for your application. Use the included 3/4-14 NPT plug for conduit connections. For hazardous areas, order explosion-proof options (E:00, E:01, E:02, or E:04) to meet CSA ratings. Always follow the manufacturer's manual for proper torque and alignment.

Maintenance and Reliability

Regular inspection of the O-rings and thread seal is recommended to maintain the CSA Type 4 enclosure integrity. The aluminum body and stainless steel sleeve resist corrosion, extending service life. For cost savings, periodic checks reduce unplanned downtime. Refer to Bently Nevada guidelines for cleaning procedures.

Compatibility and Integration

The 21000-34-00-00-066-04-02 integrates with Bently Nevada monitoring systems and third-party data acquisition units. It supports reverse mount proximity probes and optional standoff adapters. The assembly is fully compliant with API 670, ensuring seamless integration into existing vibration monitoring networks.

Frequently Asked Questions

Q: What is the probe penetration length for the 21000-34-00-00-066-04-02?

A: The probe penetration is 6.6 in, as indicated by the 066 suffix in the part number.

Q: Is this housing assembly CSA approved for hazardous areas?

A: Yes, the 21000 aluminum housing is CSA Type 4 rated and explosion-proof when ordered with appropriate options (E:00, E:01, E:02, or E:04).

Q: What is the weight of the assembly without fittings?

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

Q: What mounting thread does the -02 suffix require?

A: The -02 suffix requires a 3/4-14 NPT mounting thread.

Product Support and Availability

The 21000-34-00-00-066-04-02 is available in new and original 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.