differential pressure gauge

...Among pressure gauges, those that measure atmospheric pressure are called barometers, those that measure vacuum pressure below standard atmospheric pressure are called vacuum gauges, and those that measure pressures of several hundred MPa or more are sometimes called high pressure gauges. Also, those that measure the pressure difference between two pressure systems are called differential pressure gauges, and among these, those that measure particularly small pressure differences are called micromanometers or micro-differential pressure gauges. There are few gauges that can be called pressure gauges in the pressure range above 2 GPa (only compression pressure gauges for measuring dynamic pressure), but a method of measuring ultra-high pressures, which will be described later, has been established. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…圧力計のうちで，大気の圧力を測るものを気圧計，標準大気圧以下の真空圧力を測るものを真空計と呼び，数百MPa以上の圧力を測るものを高圧計high pressure gaugeと呼ぶこともある。また，二つの圧力系の圧力差を測るものを差圧計differential pressure gaugeといい，このうちとくに微小な圧力差を測るものを微圧計または微差圧計という。2GPaを超える圧力領域では圧力計と呼ばれるものは少ないが(動圧力測定用の圧縮圧力計だけ)，後で述べる超高圧力測定法が確立されている。…

※「differential pressure gauge」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