21000-34-05-20-095-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-05-20-095-04-02

When rotating machinery demands precise vibration monitoring, the 21000-34-05-20-095-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for hazardous area applications. With a 0.5 m probe cable and a 2.0 in standoff adapter, it delivers accurate measurements in harsh industrial environments. The aluminum body with a 304 stainless steel sleeve ensures durability and corrosion resistance.

Key Features and Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in) for flexible installation.
• Standoff Adapter: 2.0 in for proper probe positioning.
• Probe Penetration: 9.5 in for deep mounting requirements.
• Fitting Option: One 3/4-14 NPT plug only for conduit connections.
• Mounting Thread: 3/4-14 NPT for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for strength and longevity.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

One distinctive spec is the 8 mm probe size, which offers high sensitivity for early fault detection in rotating equipment. This feature helps prevent unplanned downtime and reduces maintenance costs.

Applications and Use Cases

In the oil and gas industry, the 21000-34-05-20-095-04-02 monitors vibration on pumps and compressors. Similarly, power generation facilities use it for turbine protection. Its CSA Type 4 enclosure rating makes it suitable for outdoor and washdown environments. Moreover, the API 670 compliance ensures compatibility with standard industry practices.

Installation and Setup

Mount the housing using the 3/4-14 NPT thread for a secure fit. Ensure the probe cable length of 0.5 m is sufficient for the application. The standoff adapter of 2.0 in must be installed correctly to achieve proper gap voltage. Always follow Bently Nevada guidelines for wiring and grounding to avoid signal interference.

Maintenance and Reliability

Inspect the O-rings and thread seal periodically to maintain the explosion-proof rating. The aluminum and stainless steel construction resists corrosion, extending service life. Regular calibration checks ensure measurement accuracy. By following a routine maintenance schedule, users can maximize the return on investment and minimize unexpected failures.

Frequently Asked Questions

Q: What is the probe cable length for the 21000-34-05-20-095-04-02?

A: The probe cable length is 0.5 m (20 in).

Q: What mounting thread does this housing use?

A: It uses a 3/4-14 NPT mounting thread.

Q: Is this housing suitable for hazardous areas?

A: Yes, it is available with CSA approvals and rated explosion proof for hazardous areas.

Q: What is the weight of the 21000-34-05-20-095-04-02?

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

Q: What material is the housing made of?

A: The body is aluminum with a 304 stainless steel sleeve.

Product Support and Availability

The 21000-34-05-20-095-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We provide new and original factory-packed units with a 12-month warranty.