DESIGN OF BIPLANAR CAPACITANCE SENSOR OF PRESSURE DIFFERENCE Russian patent published in 2015 - IPC G01L19/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to design of biplanar capacitance devices for measurement of pressure with a typical installation dimension of 54 mm and may be used in oil gas, chemical, food industry, etc. Design of the biplanar capacitance sensor of pressure difference consists of an interconnected electronic-indicator unit, a membrane unit and two flat connection flanges, between which there is a membrane unit of a measurement converter, comprising a capacitance cell of cylindrical shape with a measurement membrane, placed in the cavity of its body, placed near separating corrugated membranes placed in the bodies. Bodies of all membranes are arranged in series next to each other, creating a single coupled membrane unit of cylindrical shape. One of separating membranes and the capacitance cell are placed in the common body, the second of separating membranes is placed at the other side of the capacitance cell in the separate body. The common body has a cylindrical hollow ledge with one of end sides of the capacitance cell commensurate with its diameter for connection with the electronic-measurement unit.

EFFECT: increase of reliability and strength of design with reduction of its dimensions.

2 dwg