Differential pressure sensor for measuring a pressure difference in a measurement and measurement device for measuring the density of the measurement fluid

摘要

The present invention relates to a differential pressure sensor (1) for measuring a pressure difference in a measurement fluid (9), with an approximately tubular housing (4) and with two, arranged therein, adjacent measurement chambers (5, 6), each connected by a receiving area (7, 8) of the differential pressure sensor (1) with the measurement fluid (9), each of the outwardly by an at least partially flexible wall and the limited by means of a movable pressure plate (12) are separated from each other. The differential pressure sensor (1) has means (18) for detecting the deflection of the printing plate (12) on. Between the wall of the housing (4) and the wall of the measuring chambers (5, 6) is a compensation chamber (16) formed. The accuracy of the measurement of the differential pressure sensor (1) to increase, it is proposed that the compensation chamber (16) of the differential pressure sensor (1) approximately in the middle between the two pressure receiving areas (7, 8) via a pressure compensation region (17) with the measurement fluid (9) in communication.