Description

The Bently Nevada 330101-00-28-20-12-05 is a high-precision 8 mm proximity probe engineered for the 3300 XL 8 mm Proximity Transducer System. This specific configuration is distinguished by its patented FluidLoc cable (Option 12), which prevents machinery oil and other process liquids from leaking or migrating out of the machine housing through the inner core of the coaxial cable. Constructed with a 3/8-24 UNF threaded steel casing, a 2.8-inch overall case length, and no unthreaded section (0.0-inch unthreaded length), this unarmored proximity probe is ideal for direct mounting on bearings where fluid containment is critical. It provides non-contact, high-resolution eddy-current measurement of shaft vibration and position when paired with a 3300 XL Proximitor sensor and extension cable. Featuring a 2.0-meter total cable length and hazardous area approvals (Option 05), this model delivers reliable, intrinsically safe performance under demanding heavy-industrial conditions.

Features

• FluidLoc Cable Technology: Patented cable design stops process fluids and lubricating oils from migrating along the interior core of the cable to protect delicate electrical systems.
• Secure ClickLoc Connectors: Corrosion-resistant, gold-plated miniature ClickLoc coaxial connectors require only finger-tight torque and latch with a physical click, preventing vibration-induced loosening.
• Fully Threaded Casing: Threaded steel body features 3/8-24 UNF-2A threads with a 2.8-inch case length and zero unthreaded section for maximum mounting versatility.
• High-Durability PPS Tip: The 8 mm tip is molded from polyphenylene sulfide (PPS) to withstand harsh chemicals, high moisture, and abrasive machinery environments.
• Hazardous Location Protection: Configured with the -05 agency approval option, meeting major international safety standards for explosive zones.

Applications

The 330101-00-28-20-12-05 proximity probe is utilized for rotating machinery protection and condition monitoring across multiple industries, including power generation, water treatment, and petrochemicals. Typical applications include:

• Turbine shaft radial vibration and radial displacement monitoring
• Axial thrust position and rotor displacement tracking on pumps and compressors
• Fluid-exposed bearing housings requiring leak-proof barrier seals
• Intrinsically safe instrument chains located in hazardous industrial environments

Ordering Information

Technical Specifications

Installation Guidelines

Ensure correct mechanical installation and electrical connection by adhering to industrial guidelines:

• Gap Adjustment: Calibrate the physical probe gap relative to the target surface (typically 1.27 mm or 50 mils) to match the expected linear range of the Proximitor sensor.
• Thread Guarding: Maintain careful alignment to avoid cross-threading during installation. Ensure the maximum thread engagement does not exceed 0.563 inches.
• Fluid Protection: Position the FluidLoc cable seal appropriately to maximize the protection against turbine oil ingress.
• Shield Terminal Grounding: Ensure the probe sheath and extension cable shield are grounded on a single point to mitigate external industrial electromagnetic noise.

Compliance and Certifications

This product carries certified protection approvals suitable for highly hazardous environments:

• CSA: Approved for hazardous and explosion-proof areas in North America.
• ATEX: Certified for Zone 0, Zone 1, and Zone 2 explosive gaseous atmospheres in Europe.
• IECEx: Globally recognized intrinsically safe standard certification.
• RoHS: Fully compliant with restriction of hazardous substances regulations.