CAPACITIVE MATRIX PRESSURE TRANSDUCER Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: capacitive matrix pressure transducer has five layers of film, three of them being metallized plates, leads, screens (one film is used in the capacity of insulation between current-carrying parts) and elastic element also produced from dielectric film with holes for plates of sensitive element. Upper limit of measured pressure is 100 Pa. In this case area of plate of rectangular shape is selected 3.0-3.5 times bigger than area of hole. Insertion of film 1 with screen 2 into transducer enables exterior electromagnetic interference to be reduced 2 to 3 times and accuracy of measurements to be increased accordingly. EFFECT: reduced exterior electromagnetic interference and increased accuracy of measurements. 4 dwg