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

Child Classifications

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• G01F 23/0007
• G01F 23/0023
• G01F 23/003
• G01F 23/0038
• G01F 23/0046
• G01F 23/0053
• G01F 23/02 by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
• G01F 23/04 by dip members, e.g. dip-sticks
• G01F 23/14 by measurement of pressure
• G01F 23/20 by measurement of weight, e.g. to determine the level of stored liquefied gas
• G01F 23/22 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 (involving the use of floats G01F23/30)
• G01F 23/30 by floats
• G01F 23/80 Arrangements for signal processing