Description

Specifically engineered with a 3.2-inch unthreaded length and 7.0-inch overall case length, the Bently Nevada 330101-32-70-10-12-05 is a specialized 8 mm proximity probe featuring a FluidLoc coaxial cable and ClickLoc connector for harsh machine environments. This non-armored probe has a 1.0-meter total length and comes standard with CSA, ATEX, and IECEx hazardous area approvals. By providing non-contact vibration and shaft position measurements within a 3300 XL monitoring chain, this configuration prevents liquid leakage along the cable interior while delivering reliable eddy-current displacement data.

Unlike standard coaxial cables, the integrated FluidLoc cable features a specialized internal barrier that blocks the migration of oil, water, or other process fluids out of the machine housing along the cable's inner core. This makes the 330101-32-70-10-12-05 probe ideal for high-pressure or fluid-heavy applications where traditional cables might allow oil migration, compromising electrical connections or environmental containment. The probe operates as part of the 3300 XL 8 mm Proximity Transducer System, interfacing seamlessly with a 3300 XL Proximitor Sensor and compatible extension cables to output highly accurate voltage signals proportional to the distance between the probe tip and the target shaft.

Features

• FluidLoc cable prevents oil and other process liquids from leaking or migrating out of the machine casing along the cable interior.
• Non-armored, 3/8-24 UNF threaded stainless steel probe body designed for standard threaded mounting ports.
• Equipped with a gold-plated miniature ClickLoc coaxial connector to ensure positive engagement and prevent loosening during machine vibration.
• Measures static shaft position (thrust) and dynamic shaft vibration (radial) on critical high-speed rotating machinery.
• Pre-approved for hazardous location installations under CSA, ATEX, and IECEx certifications.
• Rugged TipLoc molding ensures an exceptionally robust bond between the 8 mm PPS (polyphenylene sulfide) tip and the stainless steel body.

Applications

The 330101-32-70-10-12-05 proximity probe is utilized for machinery protection and condition monitoring in critical industrial environments, particularly where lubricating oil or other fluids are pressurized or highly concentrated. Typical applications include:

• Steam turbine radial shaft vibration and axial position monitoring.
• Gas turbine bearing vibration and shaft thrust displacement.
• Centrifugal compressor shaft vibration monitoring in petrochemical facilities.
• Industrial pump rotor displacement and casing expansion assessment.
• Gearbox input and output shaft alignment, wear, and runout inspection.

Ordering Information

Technical Specifications

Installation Guidelines

Proper installation is vital to ensure long-term reliability and precise measurement. Observe the following engineering guidelines for this configuration:

• Probe Gapping: Mount the probe in the bearing housing using the appropriate physical or electrical gap (typically set to 1.27 mm or -10.0 Vdc bias) to capture the linear range of the transducer system.
• Thread Alignment: Ensure the 3/8-24 UNF mounting hole is perpendicular to the shaft centerline to prevent measurement angularity errors. Tighten using lock nuts to prevent loosening.
• Cable Routing: Carefully route the FluidLoc cable, avoiding sharp bends (maintain a minimum bend radius of 25.4 mm or 1.0 inch) and high mechanical stress. Ensure that probe cable shielding is grounded correctly at the Proximitor end only.
• Fluid Containment: The FluidLoc feature is highly recommended for pressurized bearing environments to block the leakage of turbine or motor lubricant into outer containment areas.

Compliance and Certifications

The 330101-32-70-10-12-05 is designed and certified to operate safely in industrial and hazardous environments. Certifications include:

• CSA: Certified for intrinsically safe and non-incendive installations in North American Class I, Division 1 and Division 2 hazardous locations.
• ATEX/IECEx: Approved for Zone 0, Zone 1, and Zone 2 explosive gas atmospheres.
• CE Mark: Fully compliant with European Electromagnetic Compatibility (EMC) and Low Voltage Directives when integrated with standard 3300 XL monitoring hardware.