Thermal Gas Mass Flow Meter

The thermal gas mass flow meter is a flow meter designed based on the principle of thermal diffusion.   That is, when a fluid flows through a heating object, the amount of heat dissipated by the heating object is in a certain proportion to the flow rate of the fluid. The sensor of this series of flow meters has two standard RTDs, one is used as heat source and another is used to measure the fluid temperature. When the fluid flows, the temperature difference between the two is linearly related to the size of the flow, and then through the micro-electronic control technology, this relationship is converted into a linear output of the measured flow signal.