Description

The Bently Nevada 330101-00-12-15-02-00 is an unarmored, fully-threaded 8 mm proximity probe engineered for non-contact vibration and shaft position measurements in critical industrial rotating machinery. As part of the 3300 XL series, this probe utilizes an eddy-current operating principle to deliver precise displacement measurements. The sensor is designed to interface with a 3300 XL Proximitor sensor and extension cable to form a reliable monitoring chain for heavy duty turbomachinery protection.

This specific variant is configured with a 1.2-inch (30 mm) case length and a 0.0-inch unthreaded case section. It is equipped with standard 3/8-24 UNF-2A threads for rigid mounting directly into bearing casings or brackets. For signal connection, it utilizes a 1.5-meter (4.9-foot) standard triaxial cable insulated with fluoroethylene propylene (FEP) and is terminated with a miniature ClickLoc coaxial connector. Because this version does not feature hazardous area certifications (E: 00 option) or protective armor sleeves, it serves as a cost-effective, high-precision solution for standard non-hazardous operating environments.

Features

• Highly rugged 8.0 mm probe tip molded from polyphenylene sulfide (PPS) plastic for optimal protection in harsh machine environments.
• Fully threaded stainless steel casing (AISI 303 or 304) provides high structural integrity and simple depth adjustment.
• Standard 1.5-meter (4.9-foot) triaxial FEP-insulated probe cable for clean high-frequency transmission.
• Gold-plated ClickLoc coaxial connector ensures secure, reliable connections without requiring specialized tools.
• Excellent physical and electrical interchangeability with older 3300-series transducer system components.

Applications

This proximity probe is typically deployed in non-hazardous plant zones to protect rotating assets against excessive shaft movement and dynamic failures. Key industrial applications include:

• Radial vibration measurements on utility-scale steam and gas turbine shafts.
• Axial displacement and rotor thrust monitoring in high-pressure process pumps and compressors.
• Dynamic motion and position tracking on industrial gearboxes, blowers, and cooling tower fans.
• Eccentricity and speed detection on high-capacity electric generator rotors.

Ordering Information

Technical Specifications

Installation Guidelines

To achieve the highest measurement accuracy and prevent damage, follow these engineering guidelines during installation:

• Gap Adjustment: Install the probe at the nominal calibration gap distance (typically 1.27 mm or 50 mils) relative to an AISI 4140 steel target for standard -24 Vdc system scaling.
• Cable Care: Protect the 1.5-meter triaxial cable by running it through suitable metal conduit or cable trays. Maintain the minimum bend radius of 25.4 mm (1.0 inch) to avoid structural shielding damage.
• Torque Limits: Tighten the probe case to a nominal torque of 7.5 N-m (66 in-lbf). Do not exceed the absolute limit of 22.6 N-m (200 in-lbf) during mechanical locking.
• Thread Engagement: Keep thread engagement within the maximum standard limits (0.563 inches for 3/8-24 threads) to prevent mechanical binding.