Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow (measuring a proportion of the volume flow G01F5/00)

Child Classifications

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• G01F 3/02 with measuring chambers which expand or contract during measurement
• G01F 3/24 with measuring chambers moved during operation (wet gas-meters G01F3/30)
• G01F 3/30 Wet gas-meters
• G01F 3/36 with stationary measuring chambers having constant volume during measurement (with measuring chambers which expand or contract during measurement G01F3/02)