CPC Subgroup
G01F 23/296 Acoustic waves
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 (involving the use of floats G01F23/30) > by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material > Acoustic waves
5 direct subcodes
Child Classifications
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- G01F 23/2962 Measuring transit time of reflected waves
- G01F 23/2965 Measuring attenuation of transmitted waves