PULSE CANCELLING FOR FLOW MEASUREMENTS

摘要

The invention relates to a sampling device (1) for sampling fluid quality comprising a flow channel (2), through which the fluid is flowing, a pressure sensor (3) provided in said flow channel (2) and adapted to detect a pressure in said flow channel, a membrane (4) provided downstream or upstream said pressure sensor (3) in said flow channel (2) and adapted to induce a pressure modification (PM), a control unit (6) connected to said pressure sensor (3) and said membrane (4). The sampling device is characterized in that said control unit (6) is adapted to activate said membrane (4) so as to induce said pressure modification (PM) when said detected pressure deviates from a predetermined pressure interval, thereby neutralizing any pressure fluctuation in said flow channel (2).