Description

High-precision vibration and shaft position monitoring is achieved with the Bently Nevada 330101-00-30-10-02-00, a rugged 8 mm proximity probe designed for the 3300 XL monitoring system. This specific configuration features a 3/8-24 UNF threaded body without armor, and is defined by its exact orderable segment options. It provides an unthreaded length of 0.0 inches (allowing full thread engagement inside the bracket or machine housing), an overall case length of 3.0 inches, and a total length of 1.0 meter (3.3 feet). For connectivity, it utilizes standard coaxial cable terminated with a miniature coaxial ClickLoc connector, and is supplied with the '00' agency approval option, meaning no hazardous area certifications are applied. This tailored configuration is ideally suited for clean, non-hazardous industrial environments where direct mounting with short, unarmored cabling is preferred.

Features

• Eddy-current non-contacting measurement principle for highly accurate displacement and vibration sensing.
• 8 mm tip diameter providing a wide linear measurement range of 2.0 mm (80 mils).
• Compact 3.0 inch (76.2 mm) overall case length with 0.0 inch unthreaded length for maximum thread depth configuration.
• Robust Viton O-ring seal to prevent media leakage from the bearing housing or machine casing.
• Standard coaxial cable of 1.0 meter (3.3 feet) total length, terminated with a gold-plated miniature coaxial ClickLoc connector.
• Unarmored design engineered for direct path installations inside protective conduits or clean internal machinery spaces.

Applications

• Monitoring radial vibration and axial (thrust) position on high-speed steam and gas turbines.
• Shaft relative displacement measurements in centrifugal compressors, industrial pumps, and gearboxes.
• Machinery protection systems on critical rotating shafts requiring API 670 compliant sensor inputs.
• Non-hazardous plant installations where localized cable protection and unarmored runs are utilized.

Ordering Information

Technical Specifications

Installation Guidelines

• Mount with the appropriate probe gap (normally set to -9 Vdc or 1.27 mm) using a calibration unit or voltmeter before securing the locknuts.
• Ensure the probe tip has at least 1.5 times its diameter (12 mm) of clearance from adjacent metals to prevent side-viewing interference.
• Avoid exceeding the recommended torque during installation. The maximum recommended torque for the 3/8-24 threads is 1.5 times the nominal diameter to prevent thread binding or casing damage.
• Route the 1.0-meter unarmored cable through dedicated conduit or protective trays to shield it from abrasion, oil, or high heat.
• Maintain proper shielding and grounding practices at the Proximitor sensor junction to minimize external electrical interference.

Compliance and Certifications

This specific configuration has the Agency Approval Option '00', indicating that no hazardous area or explosion-proof certifications are required or configured. It is designed for use in standard, non-classified industrial machinery environments.