ThermocoupleⅠIntroductionAthermocoupleisatemperature-measuringdeviceconsistingoftwodissimilarconductorsthatcontacteachotheratoneormorespots,whereatemperaturedifferentialisexperiencedbythedifferentconductors(orsemiconductors).,interchangeable,aresuppliedwithstandardconnectors,,:systemerrorsoflessthanonedegreeCelsiuscanbedifficulttoachieve.Ⅱ,:T:measuredtemperature;T0:referencetemperature;ConductorsA&B:thermodes;Thethermalpotentialconsistsofcontactpotentialandtemperaturedifferencepotential.⑴thecontactpotential:eintocontactwitheachother,becausethemetalFermilevelisdifferent,(T)andcanbecalculatedas: ()Amongwhich:K:Boltzmannconstant; T:temperatureofthecontactpoint;e:harge;NA(T)&NB(T):thefreeelectrondensityofconductorAandBattemepratureT;⑵thetemperaturediffe
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