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

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements > using liquid as the pressure-sensitive medium, e.g. liquid-column gauges

CPC:

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

Of 6 combined children, 3 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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