Bently Nevada 86691-00680-0350-90-05 8mm armored proximity probe

Parameter
Model: 86691-00680-0350-90-05 8mm armored proximity probe   
Thread Type: 3/8-24 UNF
Overall Case Length: 6.80 inches
Unthreaded Length: 3.50 inches
Total Cable Length: 5.0 meters
Pull Strength: 330 N (75 lbf)
API Compliance: API 670 Standard
Agency Approvals: CSA, ATEX, IECEx

Description

The Bently Nevada 86691-00680-0350-90-05 is a customized 3300 XL series eddy current proximity probe designed for continuous non-contact measurement of shaft vibration and shaft position on critical rotating machinery. Operating as part of a complete 3300 XL Proximity Transducer System, the probe works with a compatible extension cable and Proximitor® Sensor to provide a calibrated output for machinery protection and condition monitoring applications. This configuration features a 68.0 mm unthreaded probe section, a 350 mm case length, an integrated stainless-steel armored cable for increased mechanical protection, and a 0.5 m integral pigtail cable. The armored cable construction helps protect the transducer from abrasion, impact, and other mechanical damage encountered in demanding industrial installations while maintaining stable signal transmission. When installed with compatible 3300 XL system components, the 86691-00680-0350-90-05 provides reliable measurement of shaft vibration, shaft position, eccentricity, differential expansion, and rotational reference signals used by machinery protection systems.

Frequently asked questions

Q:Does this probe require gap adjustment during installation?
A:Yes. During installation, the probe gap should be adjusted according to the transducer system installation procedure to ensure the probe operates within its specified linear measurement range.

Q:What measurements can this probe perform?
A:When installed with compatible 3300 XL system components, the probe supports shaft vibration, shaft position, eccentricity, differential expansion, Keyphasor® reference, and rotational speed measurements.

Q:Does this probe operate by itself?

A:No. The probe is designed to be used with a compatible 3300 XL extension cable and 3300 XL Proximitor® Sensor to form a complete transducer system for machinery protection and condition monitoring.

Application areas

• Gas Compression Stations – Installed on centrifugal and axial compressors to continuously measure shaft vibration and shaft position. The armored probe cable provides additional mechanical protection in compressor packages where vibration, oil exposure, and confined cable routing are common.
• Steam Turbine Systems – Used on utility and industrial steam turbines to monitor radial shaft vibration and shaft position. The probe supplies continuous measurement signals to machinery protection systems, helping maintenance personnel identify changes in rotor behavior before they develop into equipment failures.
• Gas Turbine Packages – Applied to gas turbines used for power generation and mechanical drive applications. The probe works with the complete 3300 XL transducer system to monitor shaft condition and support reliable turbine operation under continuous load.
• Power Generation Equipment – Installed on turbine generators, exciter shafts, and auxiliary rotating equipment. It provides accurate non-contact shaft displacement measurements that are used for equipment protection, condition monitoring, and predictive maintenance programs.

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