using liquid as the pressure-sensitive medium, e.g. liquid-column gauges

Full Title

Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements ( transmitting or indicating the displacement of mechanical pressure-sensitive elements by electric or magnetic means G01L9/00; measuring differences of two or more pressure values G01L13/00; measuring two or more pressure values simultaneously G01L15/00) > using liquid as the pressure-sensitive medium, e.g. liquid-column gauges

Child Classifications

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• G01L 7/182
• G01L 7/185
• G01L 7/187
• G01L 7/20 involving a closed chamber above the liquid level, the chamber being exhausted or housing low-pressure gas; Liquid barometers
• G01L 7/22 involving floats, e.g. floating bells
• G01L 7/24 involving balances in the form of rings partly filled with liquid