| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a measuring device for a flow in a pipe of small diameter, having small increase of a pressure loss caused by mounting a bypass type measuring device and enabling highly accurate measurement. SOLUTION: This bypass type flow measuring device is equipped with a bypass pipe 2 in which a flow in a mainstream pipe 1 to be detected is led, a leading-in plate 3 to divide the inside of the bypass pipe so as to form a curved flow in the bypass pipe 2, a detecting element 4 installed so as to face the flow in the bypass pipe 2 and to detect various quantities relating to the flow, and a surface (surface straight-forwardly facing the flow) protruding toward the inside of the mainstream pipe 1 and extending along the sectional direction of the flow in the mainstream pipe 1. It also has a protruding plate 3a to lead the flow in the mainstream pipe 1 into the bypass pipe 2, and the component elements of the measuring device other than the protruding plate 3a are disposed further outside than the passage wall of the mainstream pipe 1.</p> |
