| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid leaking a seal material charged in a board mounting recess to a flow rate detecting element projecting outside a casing, avoid depositing the seal material to the surface of the flow rate detecting element and suppress the variation of the detection sensitivity at the flow rate detecting element. SOLUTION: The flow rate measuring apparatus 9 is composed of a casing 10, mounting plate 17, circuit board 20, flow rate detecting electric 22, sealing material 27, cover 28, etc., mounting plate fitting grooves are formed into the board mounting recess 14 of the casing 10, a stopper 24 is mounted in the casing 10 with the mounting plate 17 fitted at its element mounting part 19 into the mounting plate fitting grooves, and composed of a stopper body 25 and silicone rubber-made elastic protrusion 26 fixed to its top end, and the elastic protrusion 26 is elastically deformed to contact the surface of the flow rate detecting element 22, thereby avoiding leaking the seal material 27 to the surface of the flow rate detecting element 22.</p> |
