Primary pressure gauge

Japanese: 一次圧力計 - いちじあつりょくけい
Primary pressure gauge

…Since force is most accurately realized by gravity, the weight of a liquid column (liquid column manometer) or a weight (deadweight manometer) is used. A pressure gauge that can measure absolute pressure like this is called a primary pressure gauge (also called an absolute pressure gauge). In the latter, physical phenomena such as elastic deformation, piezoresistance effect, and piezoelectric effect are used to perform comparative measurements of pressure. …

*Some of the terminology that refers to "primary pressure gauge" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…力は重力によってもっとも正確に実現されるから,液柱(液柱型圧力計)や分銅(重錘型圧力計)の重量が利用される。このような圧力の絶対測定が可能な圧力計を一次圧力計(絶対圧力計ともいう)という。後者では,弾性変形,ピエゾ抵抗効果,圧電気効果などの物理現象が利用され,圧力の比較測定が行われる。…

※「一次圧力計」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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