ダイアフラム式空気マイクロメータ : 第1報静特性

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An air chamber is set up at either the first or the second throttle of an air-micrometer. The air chamber is partitioned from wall to wall with a corrugated diaphragm, in the centre of which a small aperture is bored to serve as inlet or outlet throttle depending on the direction of air flow. Then the characteristics of such an air-micrometer will represent the combination of the characteristics of an ordinary air-micrometer and the deflecting characteristics of the diaphragm. If a large magnification is provided for the air-micrometer, the spatial change of the concerned throttle in relation to the deflection of diaphragm will be little affected, that is, the non-linearity of the characteristic of the air-micrometer may be ignored. As a result, under such positive or low negative pressure, as usually renders the characteristic of a conventional air-micrometer non-linear, there will be a linear characteristic over the wide range of measurement. Provisionally designating such apparatus as Diaphragm Type Air-Micrometer, the authors analyse in this paper the low vacum range, which is most easy to work. The characteristics of an air-micrometer using a capillary tube for the second throttle to attain large magnification and those of the diaphragm, have been separately sought and then they were combined to derive characteristic formulas. General coincidence of those formulas with experimental result was obtained.
一般社団法人日本機械学会の論文
1958-09-25

ダイアフラム式空気マイクロメータ : 第1報静特性

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ダイアフラム式空気マイクロメータ : 第1報 静特性

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ダイアフラム式空気マイクロメータ : 第1報静特性