MEDIUM CHANGE SENSOR Russian patent published in 2020 - IPC H01H35/14 G01L19/00 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical engineering, in particular to a medium change sensor, and can be used in automation systems of objects submerged and extracted from an aqueous medium. Sensor comprises a casing with a sealed housing, which contains body parts, in which elastic membranes are fixed on the brackets opposite each other to form inner volumes. Cantilever U-shaped resilient contacts are fixed on membranes in their centres on external surfaces. On the end of the casing there are covers, between which a sealed resilient partition is fixed, which separates the inner volume of the casing from the external medium. Surfaces of cover plates adjacent to elastic partition wall are made with depth increasing gradually from the point of fixation to the centre of elastic partition. In covers there are channels for pressure transfer. Volumes on both sides of elastic partition wall exceed temperature variations of volume of dielectric liquid having running temperature range exceeding operating temperature range. Dielectric fluid completely fills internal volume of casing and membranes.

EFFECT: technical result of the invention is low error of operation and increased reliability of operation in water medium, including sea water.

1 cl, 6 dwg