Description

Bently Nevada 330101-00-20-10-12-05 is an 8 mm proximity probe designed for non-contact shaft vibration and displacement measurements in critical industrial rotating machinery. As a core component of the 3300 XL 8 mm Proximity Transducer System, this specific configuration features a 3/8-24 UNF thread without protective armor and stands out due to its patented FluidLoc cable construction. The FluidLoc cable is engineered to prevent lube oil, water, or other process fluids from wicking or leaking through the internal spaces of the coaxial cable, ensuring system integrity and preventing hazardous leaks outside the bearing housing or casing. With a total length of 1.0 meter and international hazardous area approvals (CSA, ATEX, and IECEx), this probe is intended to connect to an extension cable and a Proximitor sensor in a matched 5-meter or 9-meter transducer chain, delivering precise, stable eddy-current measurements under extreme mechanical and environmental conditions.

Features

• Fluid-Sealed FluidLoc Cable: Patented FluidLoc design prevents the migration of oil, moisture, or other process fluids through the cable interior, critical for pressurized machinery environments.
• ClickLoc Coaxial Connector: Gold-plated miniature ClickLoc coaxial connector ensures a secure, vibration-resistant connection with simple finger-tight torque.
• TipLoc and CableLoc Robustness: Features advanced TipLoc molding for an exceptionally strong bond between the probe tip and body, along with a CableLoc design providing up to 330 N (75 lbf) of pull strength.
• Standard Thread Configuration: 3/8-24 UNF thread without protective armor, optimized for clean-run internal conduit or direct mounting setups.
• Hazardous Area Certified: Fully compliant with CSA, ATEX, and IECEx standards for safe operation in explosive atmospheres.

Applications

The Bently Nevada 330101 proximity probe is widely utilized across heavy industries for continuous machinery protection and condition monitoring. Primary applications include:

• Steam and gas turbine shaft vibration and axial position monitoring
• Compressor and pump rotor displacement measurements
• Hydroelectric generator shaft vibration analysis
• Speed and Keyphasor reference measurements on high-speed rotating shafts
• Gearbox shaft alignment and radial vibration sensing

Ordering Information

Technical Specifications

Installation Guidelines

To ensure optimal measurement accuracy and system reliability, follow these engineering installation practices:

• Probe Gapping: Set the probe gap to approximately 1.27 mm (50 mils) to establish the nominal -9 Vdc operating point for radial vibration measurements.
• Mounting Alignment: Verify that the probe is mounted perpendicular to the target shaft. Maximum thread engagement is 0.563 inches for the 3/8-24 UNF thread.
• Cable Routing: Secure the FluidLoc cable in protective conduit or with cable clamps to avoid mechanical damage. Avoid tight bends; maintain a minimum bend radius of 25.4 mm (1.0 inch).
• Grounding and Shielding: Properly terminate the cable shield at the Proximitor sensor housing and monitor terminal blocks to block electromagnetic and radio-frequency interference (EMI/RFI).
• Temperature Considerations: Ensure operating environments do not expose the pressure seal to temperatures below -34 degC (-30 degF) to prevent seal degradation.

Compliance and Certifications

This proximity probe is certified for use in hazardous industrial environments under the following agency approvals:

• CSA: Class I, Div 1 & 2, Groups A, B, C, D; Class II, Div 1 & 2, Groups E, F, G; Class III
• ATEX: Ex ia IIC T4/T5/T6 Ga (Zone 0/1/2)
• IECEx: Ex ia IIC T4/T5/T6 Ga
• CE: Fully compliant with relevant European Union electromagnetic compatibility (EMC) standards when paired with 3300 XL Proximitor sensors.