Description

The Bently Nevada 330101-00-72-10-12-05 is an eddy-current-based 3300 XL 8 mm Proximity Probe designed for non-contact shaft vibration and position monitoring in critical rotating machinery. Unlike armored configurations, this variant features a lightweight, flexible, unarmored body with standard 3/8-24 UNF threads, 0.0 inches of unthreaded length, and a 7.2-inch case length to suit deep-well housing installations. A key distinguishing feature of this configuration is its 1.0-meter (3.3 feet) integrated FluidLoc cable with a miniature coaxial ClickLoc connector. The patented FluidLoc cable utilizes an internal sealing process that blocks lubrication oil and other process liquids from migrating along the cable's interior, providing exceptional protection against leakage out of pressurized machine casings. This probe is equipped with the -05 agency approval option, certifying it under international CSA, ATEX, and IECEx hazardous area safety standards for reliable operation in explosive environments.

Features

• 8 mm tip diameter proximity probe optimized for accurate, non-contact displacement and dynamic vibration measurement.
• Fully threaded 3/8-24 UNF stainless steel case with 0.0 in unthreaded length and 7.2 in overall case length.
• FluidLoc cable design prevents machinery oil and other liquid media from escaping pressurized housings via the cable's internal core.
• Gold-plated miniature ClickLoc coaxial connector provides secure, finger-tight locking without requiring specialized installation tools.
• Robust PPS (polyphenylene sulfide) tip material and AISI 303 stainless steel body withstand harsh industrial conditions.
• Broad temperature operating envelope from -52 degC to +177 degC.
• Certified under major hazardous area standards including ATEX, IECEx, and CSA.

Applications

The Bently Nevada 330101-00-72-10-12-05 probe is primarily deployed in demanding industrial environments where continuous machine protection is crucial:

• Radial vibration and axial displacement monitoring on steam and gas turbines.
• Rotor position and casing expansion tracking in high-pressure compressors, turbo-expanders, and pumps.
• Machinery housings requiring tight oil containment, such as oil-filled turbine bearings or flooded gearboxes.
• Permanent installations in petrochemical plants, refineries, pipelines, and power generation facilities requiring certified intrinsically safe components.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure precise performance of the 3300 XL proximity transducer system, follow these general engineering rules:

• Verify that the mounting thread matches the probe's 3/8-24 UNF profile and has adequate depth (maximum recommended thread engagement of 0.563 inches in standard mounts).
• Set the target-to-probe gap carefully during installation. Standard calibration uses an AISI 4140 steel target with a standard gap offset corresponding to roughly -10 Vdc (1.27 mm or 50 mils) output at the Proximitor sensor.
• Ensure lock nuts with pre-drilled safety wire holes are secured tightly to prevent loosening under heavy vibration.
• Protect standard ClickLoc coaxial connectors from dirt, grease, and mechanical strain. Avoid bending the FluidLoc cable below its minimum bend radius during installation routing.

Compliance and Certifications

This product configuration complies with the following industry approvals:

• Hazardous Area Approvals (Option 05): Certified for intrinsically safe and non-incendive environments under CSA, ATEX, and IECEx (e.g., Ex ia IIC T1...T5 Ga, Ex nA IIC T1...T5 Gc).
• Electromagnetic Compatibility: Complies with European Union EMC Directive 2014/30/EU standards including EN 61000-6-2 (Immunity) and EN 61000-6-4 (Emissions).
• Environmental Compliance: European Union RoHS Directive 2011/65/EU and China RoHS compliance with an EFUP rating of 15 years.
• Functional Safety: SIL 2 (HFT = 0) and SIL 3 (HFT = 1) certified for safety instrumented systems.