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PCE
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DIFF Subgroup
G01L 21/26

by making use of radiometer action, i.e. of the pressure caused by the momentum of molecules passing from a hotter to a cooler member; Vacuum gauges of the Knudsen type

Introduced: September 1968

Full Title

Vacuum gauges > by making use of radiometer action, i.e. of the pressure caused by the momentum of molecules passing from a hotter to a cooler member; Vacuum gauges of the Knudsen type

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • G01L 21/28 using torsional rotary measuring members IPC+CPC Available in IPC and CPC