by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water

Full Title

Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm > by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME

Child Classifications

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• G01F 23/24 by measuring variations of resistance of resistors due to contact with conductor fluid
• G01F 23/26 by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
• G01F 23/28 by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material