The Bently Nevada 330101-00-16-10-11-05 is an industrial-grade 3300 XL series 8mm eddy current proximity sensor probe. As a core sensor in Bently Nevada's (a Baker Hughes brand) asset protection and condition monitoring systems, it is widely and securely installed near the hydrodynamically lubricated bearings of high-value rotating machinery such as industrial steam turbines, centrifugal compressors, large steam turbine expanders, and fans. This probe is designed for non-contact, high-precision measurement of rotor radial vibration, axial displacement (position), and critical phase velocity signals.
In terms of its basic operating principle, the probe tip is encapsulated in high-strength polyphenylene sulfide (PPS) insulation, and the housing is precision-manufactured from 303/304 stainless steel, fully capable of withstanding long-term immersion and continuous rinsing in high-temperature lubricating oil from -52°C to +177°C. Within its measurement range (linearity up to 2.0 mm), it fully complies with the linearity and temperature drift specifications of the American Petroleum Institute (API) 670 standard. When used with the dedicated [3300 XL proximity sensor], it utilizes the eddy current effect of a high-frequency electromagnetic field to convert micrometer-level physical gap changes between the probe tip and the AISI 4140 steel journal surface into a high signal-to-noise ratio (SNR) standard proportional voltage signal of 7.87 V/mm (200 mV/mil). This provides stable and fully interchangeable precision monitoring data for online monitors in the control room, such as the 3500 system, eliminating the need for individual calibration of each instrument.
