operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted

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 > Devices for measuring mass flow of a fluid or a fluent solid material > Direct mass flowmeters > operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted

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) > Devices for measuring mass flow of a fluid or a fluent solid material > Direct mass flowmeters > operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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G01F 1/82 using a driven wheel as impeller and one or more other wheels or moving elements which are angularly restrained by a resilient member, e.g. spring member as the measuring device since 1974 IPC+CPC Available in IPC and CPC
G01F 1/84 Coriolis or gyroscopic mass flowmeters since 1974 +3 CPC IPC+CPC Available in IPC and CPC