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PCE
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DIFF Subgroup
G01L 21/10

by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured

Introduced: September 1968

Full Title

Vacuum gauges > by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured

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

Child Classifications

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  • G01L 21/12 measuring changes in electric resistance of measuring members, e.g. of filaments; Vacuum gauges of the Pirani type IPC+CPC Available in IPC and CPC
  • G01L 21/14 using thermocouples IPC+CPC Available in IPC and CPC