A modernized EMA thickness gauge with an innovative electro – magnetic biasing technology implemented in EMA transducers is designed to measure thickness of objects made of steel and aluminum alloys without the use of coupling liquid.
Substantial advantage of the new technology represents absence of a permanent magnet in the EMA transducers thus allowing sidestepping of strong adhesion of the transducer to the surfaces of the objects made of ferromagnetic steel; allowing scanning of the object being inspected, and preventing metal chips from sticking to the transducer’s protector, thus extending its service life.