ULTRASOUND AND THERMAL MASSFLOW IN ONE FLOW CHANNEL

    公开(公告)号:EP4056963A1

    公开(公告)日:2022-09-14

    申请号:EP22157676.2

    申请日:2022-02-21

    摘要: A system includes a flow tube configured to receive a flow measured by an ultrasonic flow measurement, wherein a center region of the flow tube is configured to have a drop in pressure. The system also includes a heat source/hot wire and temperature sensors configured to enable a flow measured by a thermal massflow measurement. In the system, a controller is configured to compare the flow measured by the ultrasonic flow measurement to the flow measured by the thermal massflow measurement. The controller determines a ratio of the flow measured by an ultrasonic flow measurement to the flow measured on by the flow measurement based on thermal massflow. The controller also calculates a density, a thermal conductivity and an energy and / or gas content of the gas.