Description

The Bently Nevada 330101-00-20-15-12-05 is a high-performance 8 mm proximity probe configured with a 3/8-24 UNF unarmored threaded body, an unthreaded length of 0.0 inches (0 mm), and an overall case length of 2.0 inches (51 mm). This specific variant features a 1.5-meter (4.9-foot) total length FluidLoc cable terminated with a miniature coaxial ClickLoc connector, and it carries CSA, ATEX, and IECEx agency approvals for hazardous area environments. Designed to prevent oil or process fluid leakage along the cable core, the FluidLoc cable option makes this configuration ideal for pressurized bearing housings and wet environments where standard cables could cause oil migration. It operates on eddy-current principles to deliver reliable, non-contact shaft vibration and dynamic displacement measurements in rotating machinery monitoring systems.

As part of the 3300 XL 8 mm Proximity Transducer System, this probe is fully compatible with standard 3300 XL extension cables and 330180 Proximitor sensors. The robust, unarmored construction features a hermetically sealed polyphenylene sulfide (PPS) tip and a stainless steel body. This ensures excellent durability and measurement stability under continuous exposure to extreme industrial environments, machine vibration, and chemical agents.

Features

• 8 mm tip diameter proximity probe optimized for eddy-current non-contact displacement and vibration measurement
• Special FluidLoc cable design prevents oil and process fluids from leaking or migrating through the internal cable core
• Unarmored stainless steel probe body with standard 3/8-24 UNF threads
• Fully threaded case configuration with 0.0 in (0 mm) unthreaded length and 2.0 in (51 mm) overall case length
• 1.5-meter (4.9 ft) integrated cable terminated with a gold-plated miniature coaxial ClickLoc connector
• Hazardous area certified with CSA, ATEX, and IECEx approvals for intrinsically safe and non-incendive environments
• Hermetically sealed PPS tip resistant to harsh lubricants, chemical exposure, and high-temperature conditions

Applications

• Steam and gas turbine rotor displacement and dynamic shaft vibration monitoring
• Centrifugal compressor and high-pressure pump shaft movement tracking
• Critical rotating machinery protection in oil and gas, refining, and power generation facilities
• Bearing housing displacement and shaft thrust (axial) position monitoring
• Pressurized or wet machine enclosures requiring a fluid barrier along the transducer cabling

Ordering Information

Technical Specifications

Installation Guidelines

• Mechanical Mounting: Thread the probe directly into the bearing housing or mounting bracket using the standard 3/8-24 UNF threads. Ensure that the probe is mounted with the appropriate physical gap distance, typically calibrated to 1.27 mm (50 mils) representing the center of the linear range (-10 Vdc output).
• Thread Engagement: Do not exceed the maximum thread engagement limit of 0.563 inches (14.3 mm) during installation to prevent thread binding or mechanical strain on the probe body.
• Cable Routing: Carefully route the integrated FluidLoc cable, keeping bend radii above recommended limits. Avoid running parallel to high-voltage power lines to minimize potential electromagnetic interference.
• Shielding and Grounding: Connect the coaxial ClickLoc interface securely. Grounding and shielding must conform to standard Bently Nevada installation drawings and local industrial automation guidelines.

Compliance and Certifications

• Hazardous Area Ratings: ATEX, IECEx, and CSA certified
• Intrinsically Safe (Ex ia): Class I, Zone 0, AEx/Ex ia IIC T5...T1 Ga; Class I, Div 1, Groups A, B, C, D
• Non-Incendive / Non-Sparking (Ex nA/ec): Class I, Zone 2, AEx/Ex nA IIC T5...T1 Gc; Class I, Div 2, Groups A, B, C, D
• Environmental Sealing: Tip is hermetically sealed to withstand high-pressure liquids and gases at the mounting interface.