APPARATUS FOR MEASURING CONCENTRATION OF LIQUID FUEL USING STRAIN GAUGE, AND FUEL CELL HAVING THE APPARATUS

摘要

An apparatus for measuring the concentration of liquid fuel is provided to MEASURe the concentration easily and to save the manufacturing costs due to simple structure. An apparatus for measuring the concentration of liquid fuel comprises a main body formed with a flow channel of the liquid fuel; a strain film which is transformed according to the concentration gradient of the liquid fuel and is arranged within the main body so that at least, a part is exposed to the flow channel; a strain gage which is arranged on the strain film and senses the deformation rate of the strain film; and a circuit part which is connected to the strain gage and converts the change of the electric resistance of the strain gage to the output signal.