PRESSURE SENSOR, IN PARTICULAR FOR PRESSURES OF MORE THAN 100 BAR

• Main Authors: SZYMANSKI, Sylwester, GETMAN, Igor, LOPATIN, Sergey, SCHLEIFERBÖCK, Jan, GIRARDEY, Romuald, LEUTHNER, Dietmar
• Format: Patent
• Language: English; French; German
• Published: 03.07.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention relates to a pressure sensor for measuring high pressures, e.g. of more than 100 bar, comprising: a housing (4) having a tightly sealed volume filled with a compressible filling liquid; the housing (4) having an elastically deflectable membrane (7), which has a rear side facing the volume filled with the filling liquid and has a front side situated opposite the rear side, in such a way that the membrane (7) transmits a pressure present on the front side of the membrane (7) to the filling liquid; and a measuring unit (1, 21, 31) configured to ascertain a variable dependent on the speed of sound in the filling liquid, and to determine, on the basis of the measured variable, a pressure measurement value representing the pressure present on the front side of the elastically deflectable membrane (7), the filling liquid containing an organic compound present with a proportion by volume of more than 99% in the filling liquid.