A Noncontact Pneumatic-to-Electrical Transducer of Position

The development of modern technologies in the field of transducers has restricted, but not eliminated entirely the development and application of fluid sensors. The application of well known hydro-aerodynamic effects and phenomena [4-6] connected with the behaviour of differently shaped fluid jets, makes the fluid sensors preferred in work under extreme operating conditions, such as the presence of powerful electrical and electromagnetic fields (for example in electric welding), the presence of sparks and metal splashes (found in metal casting), or in contaminated environment full of dust, smoke and others. The present paper discusses the results of the development and study of a noncontact pneumatic-to-electrical transducer of position [1, 3], designed on the basis of a fluid jet sensor with an annular nozzle and a pneumatic-to-electrical transducer [2], including an elastic membrane with a hard centre and a plate, an optical system and an electronic trigger scheme.