CPC Subgroup
G05D 23/20 with sensing elements having variation of electric or magnetic properties with change of temperature (G05D23/13 takes precedence)
Full Title
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)
5 direct subcodes
Child Classifications
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- G05D 23/22 the sensing element being a thermocouple
- G05D 23/24 the sensing element having a resistance varying with temperature, e.g. a thermistor
- G05D 23/26 the sensing element having a permeability varying with temperature