THRESHOLD PRESSURE SENSOR Russian patent published in 2025 - IPC H01H35/14 G01L19/12 

FIELD: measuring.

SUBSTANCE: invention relates to instrument making for use in systems for switching electrical circuits of process equipment and technical objects when pressure difference exceeds a certain threshold value. Threshold pressure sensor comprises a housing, brackets oppositely directed to each other by flanges, which are isolated from the housing by their installation between the base and the cover connected by a ring. Membranes with contacts in centres are fixed on brackets along outer diameter. Membranes are oriented relative to each other by unlike surfaces. Ring is made of material with temperature coefficient of linear expansion, which is considerably less than temperature coefficient of linear expansion of material of base, cover and brackets.

EFFECT: possibility of providing low temperature error of sensor operation in wide range of ambient temperatures.

1 cl, 4 dwg