Circuits therefor, e.g. constant-current flow meters

Introduced: January 1995

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 thermal effects > Circuits therefor, e.g. constant-current flow meters

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 thermal effects > Circuits therefor, e.g. constant-current flow meters

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1995.

Child Classifications

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G01F 1/6965 CPC only CPC only
G01F 1/698 Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters since 1995 +2 CPC IPC+CPC Available in IPC and CPC