The Bently Nevada 330105-02-12-10-12-RU is an 8mm reverse-mounted eddy current proximity sensor probe, part of the 3300 XL series, designed and manufactured by Bently Nevada (a brand under Baker Hughes). As a core sensor in rotating machinery condition monitoring systems, it is typically mounted on the sliding bearings of large steam turbines, centrifugal compressors, and heavy-duty fans.
The Bently Nevada 330105-02-12-10-12-RU is designed for non-contact, high-precision measurement of rotor radial vibration, axial displacement (position), and critical phase velocity signals. The reverse-mounted probe is typically used with a dedicated probe sleeve, allowing maintenance personnel to adjust, replace, and calibrate the probe directly from outside the equipment without stopping the machine or disassembling the bearing housing.
In terms of basic operating principles and field applications, the Bently Nevada 330105-02-12-10-12-RU features a high-strength polyphenylene sulfide (PPS) engineering plastic insulated front end and a precision-manufactured 303/304 stainless steel housing, capable of withstanding continuous corrosive environments with lubricating oil immersion at temperatures ranging from -52°C to +177°C. Within its standard linear range of 2.0 mm, the probe fully complies with the accuracy and temperature drift requirements specified by the American Petroleum Institute (API) 670 standard.
