Eddy Current Probes

Eddy Current/Proximity probes are used for non contact vibration and displacement measurement. The core applications for these sensors is monitoring shaft expansion, relative vibration and speed on a range of rotating machinery from turbines to pumps and compressors. A proximity probe system is made up of an inductive sensor embedded in a stainless steel body with a fixed & tuned length of coaxial cable connected to a separate driver unit. The driver provides the excitation to the probe and generates a linearised output proportional to the gap between the target material and probe tip.