Eddy sensor for a vortex - flow meter, vortex - the flowmeter and method for determining a flow rate

摘要

An eddy sensor (101) for a vortex - flow meter (1) with a support body (135) with an upper side on which at least one first electrode (137 and 138) is arranged, wherein the first electrode (137 and 138) a first capacitor surface of a first capacitive sensor element (150 or 160) and forms with a sensor membrane (132) -, with an electrically conductive surface area (133) which, in comparison with the upper side of the carrier element (135) is arranged and a second capacitor surface of the capacitive sensor element forms, wherein the sensor diaphragm (132) with a sensor flag (131) is connected, wherein the sensor flag (131) has a longitudinal axis (a),with the electrode (137 and 138) asymmetrically with respect to the longitudinal axis (a) of the sensor flag is arranged, and with a vibration of the sensor flag (131) to a deformation of the sensor diaphragm (132) and thus to a change in the capacitance of the first capacitive sensor element (150 or 160);as well as a vortex - flow meter (1) and a method for determining a flow rate with the vortex - flow meter (1). In special embodiments of the vortex sensor can, in addition to flow even absolute pressure, dynamic pressure, and position of the sensor as well as filling of the tube are measured.n="34"