PRESSURE MEASURING DEVICE Russian patent published in 2008 - IPC G01L9/04 

FIELD: resistance strain gauge converters.

SUBSTANCE: pressure measuring device can be used in resistance strain gauges of pressure, rarefaction; pressure difference, discharge and level of liquid and gaseous media into electric signal. Device has receiving and measuring membranes tightly connected together, and resistance strain gauge. Receiving membrane has external thick ring, thin circular part and thick hard center provided with opening along axis. Measuring membrane has thick external ring which is tightly connected with external ring of receiving membrane, thin part and hard center, which center is provided with rod tightly connected with receiving membrane and which is used for transmission of deformation from receiving membrane to measuring membrane. Part of measuring membrane is elongated to have relation of sides as 3:1, which part is formed by two side slots made for depth exceeding thickness of thin part of membrane. Onto flat of mentioned surface of measuring membrane, rectangular resistance-strain element is fixed. Resistance strain members of element are disposed onto dielectric substrate made of resilient material in areas of transition from thin part to thick one as in area of external ring and in area of hard center. They have similar orientation along longer side or they are disposed in perpendicular to it.

EFFECT: improved sensitivity; minimization of sizes.

5 cl, 5 dwg