with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: with sensing elements having variation of electric or magnetic properties with change of temperature

CPC: with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Control of temperature > characterised by the use of electric means > with sensing elements having variation of electric or magnetic properties with change of temperature

CPC:

Control of temperature > characterised by the use of electric means > with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence)

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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G05D 23/2033 +3 CPC CPC only CPC only
G05D 23/2037 +1 CPC CPC only CPC only
G05D 23/22 the sensing element being a thermocouple +1 CPC IPC+CPC Available in IPC and CPC
G05D 23/24 the sensing element having a resistance varying with temperature, e.g. a thermistor +2 CPC IPC+CPC Available in IPC and CPC
G05D 23/26 the sensing element having a permeability varying with temperature IPC+CPC Available in IPC and CPC