| 摘要 |
<p>PURPOSE:To improve the accuracy and durability without any influence of the fitting state, etc., of the device by providing a following wake generating element in a cylindrical straightening element which surrounds a heating element and a flow limiting element at the downstream exit side of the straightening element. CONSTITUTION:The cylindrical straightening element 4 arranged coaxially at the center part of a passage 1 is supported on the internal wall of the passage 1 by a supporting member 4a. Then, the heating element 3 made of a temperature sensitive resistance is surrounded in the straightening element 4. In this straightening element 4, the following wake generating element 5 is provided at the upstream side of the heating element 3 and the flow limiting element 6 is provided at the downstream exit side of the straightening element 4. This constitution eliminates the influence of the fitting state, etc. of the device, facilitates adjustment, and makes the influence of staining hard to exert, the accuracy and durability superior, and the size and weight reduced.</p> |
