The 330103-00-13-50-12-05 is an 8mm eddy current proximity probe, part of the 3300 XL series manufactured by Bently Nevada (a brand under Baker Hughes). As a core sensing element in rotating machinery condition monitoring and protection systems, it is widely used in industries such as power, petrochemicals, and metallurgy for high-precision measurement of radial vibration, axial displacement, and rotational speed (key phasor signals) of hydrodynamic bearings in critical equipment such as steam turbines, compressors, and large water pumps.
In the vibration measurement loop, the 330103-00-13-50-12-05 probe tip is insulated with high-strength polyphenylene sulfide (PPS), and the housing is made of 303/304 stainless steel, capable of withstanding harsh industrial ambient temperatures ranging from -52°C to +177°C. In practical applications, it must be used in conjunction with a 3300 XL extension cable (total system length 5 meters or 9 meters) and a 3300 XL preamplifier (proximity sensor).
The 330103-00-13-50-12-05 utilizes the eddy current effect of a high-frequency electromagnetic field to convert minute physical gap changes between the probe tip and the surface of the tested journal into a proportional linear voltage signal, fully complying with the mechanical structure, linearity, and temperature drift test specifications stipulated in the American Petroleum Institute (API) 670 standard.
