THIN-FILMED PRESSURE TRANSDUCER Russian patent published in 2005 - IPC

FIELD: measuring technology.

SUBSTANCE: thin-filmed pressure transducers can be used in different branches of science related to measurement of pressure under conditions of non-stationary temperature of medium to be measured, for example, condition of thermal shock. Pressure transducer has case, round membrane wit peripheral base along which base the membrane is fixed inside the case, cyclical and radial resistance strain gauges connected by links made of low-ohmic material and connected in opposite arms of measuring bridge. Resistance strain gauges are made in form of similar number of resistance strain elements having the same shape and disposed along circle at peripheral part of membrane. One link which connects cyclical and radial strain gauge elements has two contact areas. The areas are connected by resistive strip in form of a ring disposed at minimal possible distance from strain gauge elements along circle. Center of the circle belongs to center of membrane. Separate parts of ring are short-circuited by additional links.

EFFECT: reduced error of measurement.

4 cl, 4 dwg