Description

The Bently Nevada 330101-00-33-10-12-05 is a high-precision proximity probe configured for the 3300 XL 8 mm Proximity Transducer System. Engineered for non-contact machinery protection, this specific probe option features a standard 3/8-24 UNF thread, a 0.0-inch unthreaded length, and a 3.3-inch overall case length. Unlike baseline proximity probes, this variant is equipped with a patented FluidLoc cable. The FluidLoc design establishes an internal barrier that prevents lubricating oils, industrial fluids, and process gases from migrating out of the machine housing through the inner core of the cable. Terminated with a miniature coaxial ClickLoc connector and featuring a 1.0-meter total cable length, this unarmored configuration is fully certified with ATEX, IECEx, and CSA hazardous area approvals. Operating on eddy-current principles, it pairs seamlessly with 330180 series Proximitor sensors and standard extension cables to deliver continuous vibration and shaft position monitoring on critical rotating assets like steam turbines, high-pressure compressors, and process pumps.

Features

• Core 8 mm tip diameter optimized for non-contact eddy-current displacement measurements.
• Fully threaded 3.3-inch brass and stainless steel probe body with no unthreaded section (0.0-inch unthreaded length).
• Specialized FluidLoc cable design prevents oil, water, and gas leaks along the cable's interior core.
• Miniature coaxial ClickLoc connector provides a secure, robust connection with an audible tactile click.
• 1.0-meter overall cable length designed for standard system integration within 5-meter or 9-meter monitoring chains.
• Approved for hazardous area environments under ATEX, IECEx, and CSA certifications (Option 05).
• Extremely rugged design with TipLoc molding for an exceptionally strong bond between the probe tip and body.

Applications

• Radial vibration and shaft dynamic motion monitoring on high-pressure steam and gas turbines.
• Axial thrust position and shaft displacement measurements in rotating compressors and gearboxes.
• Machine casing and bearing housing measurements on high-temperature boiler feed pumps.
• Critical machinery protection loops requiring oil-tight barrier isolation through the sensor cabling.
• Intrinsically safe and non-incendive installations in Class I, Division 1 / Zone 0 hazardous environments.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mount the probe on the bearing housing or casing using the 3/8-24 UNF thread. Tighten the lock nut securely.
• Ensure the maximum thread engagement does not exceed 0.563 inches (14.3 mm) to prevent physical binding inside the mounting bore.
• Establish the appropriate probe gap per system specifications (normally calibrated at -10.0 Vdc bias or approximately 1.27 mm / 50 mils gap against an AISI 4140 steel target).
• Maintain a minimum cable bend radius of 25.4 mm (1.0 inch) during routing of the FluidLoc cable to prevent internal conductor damage.
• Ensure gold-plated ClickLoc connections are made finger-tight until they physically click. Do not use pliers on gold-plated connectors.
• Isolate and ground the cable shielding correctly at the Proximitor side only to prevent grounding loops in electrical cabinets.

Compliance and Certifications

• ATEX / IECEx: Ex ia IIC T5...T1 Ga; Ex ia IIIC T90 Celsius...T280 Celsius Dc; Ex ec IIC T5...T1 Gc for hazardous area installations.
• CSA / cULus: Certified for Class I, Division 1, Groups A, B, C, and D; Class I, Zone 0, AEx ia IIC hazardous areas.
• CE Mark: Complies with European Union EMC Directive standards.