Description

The Bently Nevada 330101-38-49-20-02-05 is a high-precision 8 mm proximity probe configured specifically with a 3/8-24 UNF thread, a 3.8-inch unthreaded length, a 4.9-inch overall case length, a 2.0-meter (6.6-foot) total length, a standard cable with a miniature coaxial ClickLoc connector, and multi-agency certifications (CSA, ATEX, IECEx) for hazardous area deployment. This specific unarmored configuration is engineered to deliver reliable, non-contact shaft vibration and displacement measurements in tight spatial locations where protective conduit or metal armor is not required.

Operating as a fundamental component of the 3300 XL 8 mm Proximity Transducer System, the probe utilizes eddy-current principles to measure distance to a conductive target. This data translates directly to machinery shaft vibration, position, and speed. The probe is engineered to function seamlessly with a companion Proximitor 330180 series sensor and a 3300 XL extension cable, feeding critical position and dynamic motion signals back to 3500 series monitoring racks or DCS systems for active machinery protection and diagnostics.

Features

• Unarmored Mechanical Profile: This specific 330101 variant is designed without metal armor, making the standard cable highly flexible and easier to route through conduit systems.
• Precise Thread Geometry: Features a 3/8-24 UNF threaded body with a 3.8-inch unthreaded portion and a 4.9-inch overall case length to accommodate specific offset mount or bracket depth requirements.
• Compact ClickLoc Connector: Equipped with a miniature coaxial ClickLoc gold-plated connector that provides a reliable physical joint without risking signal degradation.
• Standard Non-FluidLoc Cable: Features standard coaxial cable with a total length of 2.0 meters (6.6 feet), calibrated specifically for high-accuracy transduction.
• Robust Environmental Tolerance: Operates reliably in harsh environments with specialized PPS (polyphenylene sulfide) tip material and a stainless steel probe body.

Applications

The Bently Nevada 330101-38-49-20-02-05 is designed for rotating machinery protection in heavy industries such as oil and gas, power generation, mining, and chemical processing. Primary applications include:

• Shaft radial vibration and axial position monitoring in steam and gas turbines.
• Rotor dynamic behavior diagnostics and displacement measurements in high-speed compressors, pumps, and gearboxes.
• Thrust bearing wear tracking and eccentric motion detection.
• Critical machinery shutdown loops to prevent catastrophic mechanical failure.

Ordering Information

Technical Specifications

Installation Guidelines

• Gap Calibration: Mount the proximity probe with the correct mechanical gap relative to the target material (typically AISI 4140 steel) according to Proximitor calibration specs.
• Thread Depth: Do not exceed a maximum thread engagement of 0.563 inches to prevent binding during mounting on 3/8-24 UNF brackets.
• Cable Protection: Because this SKU does not feature a stainless steel armored sleeve, protect the cable from sharp edges, mechanical pinches, or excessive pulling. Route the coaxial cable inside designated conduit or cable trays.
• Shielding and Grounding: Ensure the probe cable shielding connects properly to system ground at the monitoring rack end, preventing noise or electromagnetic interference from distorting the vibration dynamic output.

Compliance and Certifications

This product configuration is certified under agency option 05, granting multiple certifications for hazardous industrial areas:

• CSA: Intrinsically safe and non-incendive Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III.
• ATEX/IECEx: Intrinsically safe Ex ia IIC T5...T1 Ga; Ex ia IIIC T90degC...T280degC Dc; Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc.
• CE Mark: Fully compliant with applicable European Union direct safety and emissions mandates.