Moisture detection element, breath gas detection device, breath test system and manufacturing method of breath detection element

摘要

PROBLEM TO BE SOLVED: To improve the robustness of a moisture detecting element for realizing a breath recognition function. SOLUTION: An insulating substrate 4 made of an insulating material, an application portion 2 formed on the insulating substrate 4 to which a voltage is applied, and an application portion 2 formed on the insulating substrate 4 and applied to the application portion 2. The output unit 3 that outputs a voltage signal corresponding to the current flowing through the electric path via the water molecules adhering to the surface of the insulating substrate 4 and the application unit 2 and the output unit 3 are electrically insulated by the generated voltage. In addition, there is a conductive conductive film 61 provided on the insulating substrate, and an insulating film 62 made of an insulating material is formed on the application unit 2, the output unit 3, and the upper part of the conductive film 61. It is characterized in that it is provided. [Selection diagram] Fig. 1