Description

The Bently Nevada 330101-00-61-20-02-05 is a high-precision, non-contact 8 mm proximity probe belonging to the industry-standard 3300 XL 8 mm Proximity Transducer System. This specific model configuration is designed without armor and features a fully threaded 6.1-inch overall case length with 0.0 inches of unthreaded length, making it ideal for deep bearing housings or machine casings requiring robust, thread-mounted mechanical support. It features a 2.0-meter (6.6 feet) total length standard cable terminated with a miniature coaxial ClickLoc connector, and comes with CSA, ATEX, and IECEx agency approvals for hazardous environments. Utilizing eddy-current measurement principles, this proximity probe delivers extremely reliable, non-contact displacement and shaft position data for critical rotating machinery protection programs.

Features

• Fully Threaded Body: Designed with 0.0 inches of unthreaded length (fully threaded) and a 6.1-inch overall case length with 3/8-24 UNF threads, allowing for highly adjustable mounting depths in deep machine walls.
• Unarmored Design: Lighter-weight unarmored standard coaxial cable ideal for installations with existing conduit protection or minimal abrasion risks.
• ClickLoc Connector: Equipped with a miniature coaxial ClickLoc connector for a secure, low-loss, and vibration-resistant electrical path to the extension cable.
• Extensive Hazardous Area Approvals: Certified under CSA, ATEX, and IECEx for deployment in explosive or intrinsically safe industrial zones.
• Advanced Eddy Current Principle: Provides highly accurate, non-contact static (position) and dynamic (vibration) measurements of conductive metal surfaces.

Applications

Typical applications include:

• Steam and Gas Turbines: Continuous monitoring of rotor radial vibration and axial thrust position.
• Centrifugal Compressors: Precise measurement of shaft vibration and displacement.
• Large Pumps and Fans: Industrial-grade machinery protection to prevent catastrophic mechanical failure.
• Hydroelectric Generators: Monitoring shaft runout and thermal expansion.

Ordering Information

Technical Specifications

Installation Guidelines

• Thread Depth: Ensure the threaded mounting location is compatible with the 6.1-inch overall case length. Verify that the 0.0-inch unthreaded length allows proper depth setting without bottoming out.
• Probe Gap Calibration: Adjust the physical gap between the probe tip and the target shaft surface using a digital voltmeter or gap-measuring tool. Standard calibration typically requires gapping to achieve approximately -10 VDC at the Proximitor sensor output.
• Cable Protection: Route the unarmored standard coaxial cable through a dedicated, grounded metal conduit or tray to shield it from electrical noise and mechanical abrasion.
• Connector Connection: Hand-tighten the miniature ClickLoc coaxial connector to the extension cable. Ensure the connection is clean, dry, and free of moisture or contaminants. Do not use tools that can damage the miniature connector.

Compliance and Certifications

• CSA: Certified for hazardous locations under Canadian standards.
• ATEX: Certified for potentially explosive atmospheres in European regions.
• IECEx: Globally recognized international certification for explosive environments.