PRESSURE PICKUP Russian patent published in 1997 - IPC

FIELD: pressure pickups, applicable in various branches of science and engineering for measurement of pressure. SUBSTANCE: pressure pickup uses membrane 2 with the first pair of radial resistors 4,5 and the second pair of circumferential resistors 6,7 cut in a measuring bridge circuit. The resistors are made in the form of identical square strips, resistors 6,7 of the second pair are located symmetrically to resistors 4,5 of the first pair at a certain distance away. First contact land 13, 17 of each resistance strain gauge of the first pair is connected through conductor 18 to nearest contact land 14, 10 of the most remote resistance strain gauge of the second pair. Second contact lands 16 and 12 of resistance strain gauges of the first pair are connected to most remote contact lands 15 and 11 of the nearest resistance strain gauge of the second pair. Resistance strain gauge 4 and resistance strain gauge 7 are positioned with shift "h" along their length by the same value relative to resistance strain gauges 5 and 6. Shift value "h" is determined according to a definite dependence. EFFECT: enhanced accuracy of measurement. 5 cl, 2 dwg