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PCE
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DIFF Subgroup
G01N 27/16

caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means > by investigating impedance > by investigating resistance > of an electrically-heated body in dependence upon change of temperature > caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

CPC:

Investigating or analysing materials by the use of electric, electrochemical, or magnetic means (G01N3/00 – G01N25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G01R) > by investigating impedance > by investigating resistance > of an electrically-heated body in dependence upon change of temperature > caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas

No child classifications to compare. This is a leaf node in both IPC and CPC.