SU1527529A1 - Pressure transducer - Google Patents

Abstract

The invention relates to a measurement technique, in particular, to capacitive pressure sensors for liquid and gaseous media. The purpose of the invention is to increase the sensitivity of a capacitive pressure sensor. The sensor includes a housing 1 with an inlet 9, two electrodes, made in the form of elastic membranes 2, 4, which form, respectively, with the housing 1 and the bowl 5, hermetic chambers 3 and 11 connected to each other by a through channel 7, made in the pin 6. Change The pressure in chambers 3 and 11 leads to a change in the relative position of the working surfaces of the membranes 2, 4, which leads to a change in the electrical capacitance of the sensor. 2 Il.

Description

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Claims (1)

Claim A pressure sensor comprising a housing with a supply fitting, a sensitive metal membrane rigidly fixed around the periphery of the housing, and an electrode located outside electrically isolated from the membrane, characterized in that, in order to increase sensitivity, the electrode is made in the form of an elastic membrane attached to periphery to a flat bowl, forming a box with it, while both membranes are fastened together in the center with a pin in which a through channel is made. figure 2