Flow measurement method for measuring speed of flow in a gas or fluid uses a sensor with a temperature-dependent electric resistor in thermal contact with the fluid

摘要

Based on ever available substrate heat conductivity, even though low, there is a heat energy discharge from a sensor into a carrier substrate. This can be prevented by fitting a heating filament on the opposite side of the carrier substrate. As a result of its heat energy, heat flow is reduced/interrupted from the sensor into the substrate so that more heat energy is available for convection. An independent claim is also included for a circuit structure for measuring speed of flow in a fluid by means of a sensor with a temperature-dependent electric resistor in thermal contact with the fluid.