DIFF Subgroup
G01F 1/20 by detection of dynamic effects of the flow
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow > by using mechanical effects > by detection of dynamic effects of the flow
CPC:
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow (measuring a proportion of the volume flow G01F5/00) > by using mechanical effects > by detection of dynamic effects of the flow
Of 5 combined children, 3 exist in both systems.
2 codes are CPC-only extensions.
IPC defines codes here since 1974.
Child Classifications
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- G01F 1/28 by drag-force, e.g. vane type or impact flowmeter since 1974 IPC+CPC Available in IPC and CPC