Xa kukho abaqhubi ababini abahlukeneyo okanye i-semiconductor A kunye no-B ukwenza i-loop, iziphelo zayo zombini zixhunyiwe, nje ukuba ubushushu beendawo ezimbini ezahlukeneyo buhluke, ubushushu bokuphela kwe-T, obubizwa ngokuba ngumsebenzi wesiphelo okanye oshushu, kwelinye. iqondo lobushushu ekupheleni T0, eyaziwa ngokuba isiphelo free (ekwaziwa ngokuba icala reference) okanye isiphelo ebandayo, isiphaluka uya kuvelisa amandla electromotive, isalathiso kunye nobukhulu amandla electromotive inxulumene izinto umqhubi kunye nobushushu zoqhagamshelwano ezimbini. .Le nto ibizwa ngokuba yi-thermoelectric effect, iindidi ezimbini zesekethe ye-conductor eyaziwa ngokuba yi "thermocouple", eyenziwe ngabaqhubi ababini ababizwa ngokuba yi-electrode "eshushu", amandla ombane abizwa ngokuba yi "thermoelectric emfs".
I-emfs ye-Thermoelectric yenziwe ngamalungu amabini ombane we-electromotive, inxalenye yesibini ye-conductor yoqhagamshelwano lwamandla e-electromotive, enye inxalenye yi-conductor enye yomahluko wobushushu be-electromotive force.
Ubungakanani be-thermocouple loop thermoelectric emfs, kuphela ngokubunjwa kwezinto zomqhubi we-thermocouple ezinxulumene nobushushu boqhagamshelwano olubini, kwaye alunanto yakwenza nobukhulu bemilo ye-thermocouple.Emva kokuba i-thermocouple igxininise izinto ezimbini ze-electrode, ubushushu boqhagamshelwano t kunye ne-thermoelectric emfs zimbini t0.Umsebenzi umbi.
Olu ngqamaniso lusetyenziswe ngokubanzi kumlinganiselo wangempela wobushushu.Ngenxa yokubanda kwe-t0 rhoqo, eveliswa yi-thermocouple thermoelectric emfs kuphela (umlinganiselo) weqondo lokushisa elitshisayo liyahluka, i-emfs ye-thermoelectric ihambelana nobushushu obuthile.Ngethuba nje sisebenzisa indlela yokulinganisa i-emfs ye-thermoelectric inokufezekisa injongo yokulinganisa ubushushu.
Umlinganiselo wobushushu be-Thermocouple ngumgaqo osisiseko weentlobo ezimbini zezithako ezahlukeneyo zokwakheka kwesixhobo somqhubi welophu evaliweyo, xa iqondo lobushushu likwiziphelo zombini, iluphu iya kuba nombane odlulayo, obukhoyo phakathi kwamandla e-electromotive kuzo zombini iziphelo - thermoelectric emf , oku kubizwa ngokuba yi-Seebeck effect (i-Seebeck effect).Amacandelo amabini ahlukeneyo e-electrode ye-homogeneous conductor njengobushushu, ubushushu buphezulu bomsebenzi ekupheleni kwesiphelo, esinye isiphelo sobushushu obuphantsi njengesiphelo esikhululekileyo, sidla ngokukhululeka phantsi kobushushu obuqhubekayo.Ngokutsho kwe-emf ye-thermoelectric njengomsebenzi wokushisa, itafile ye-thermocouple indexing;Itheyibhile ye-Indexing yiqondo lobushushu elipheleleyo kwi-0 ℃, phantsi kweemeko ezahlukeneyo ze-thermocouples kunye netafile yesalathisi eyahlukileyo.
Ukufikelela kwi loop thermocouple xa izinto zetsimbi wesithathu, abafowunelwa ezimbini kwiqondo lobushushu efanayo ixesha nje izinto, eveliswe thermocouple thermoelectric ibekwe ukuba ihlale iyafana, nto leyo ayichatshazelwa lufikelelo lwentsimbi yesithathu kwi loop.Ngoko ke, xa umlinganiselo weqondo lokushisa le-thermocouple, unokudibaniswa kwisixhobo sokulinganisa, esilinganiswe emva kweemfs ze-thermoelectric, unokwazi ubushushu bomgangatho ophakathi.Thermocouple lokulinganisa lobushushu ukuya ekupheleni ebandayo (isiphelo sokulinganisa isiphelo eshushu, ekupheleni ilothe edityaniswe kwisekethe yokulinganisa ibizwa ngokuba isiphambuka abandayo) ubushushu igcinwa rhoqo, ubungakanani thermoelectric amandla kunye nobushushu obulinganisiweyo kubudlelwane bomlinganiselo othile.Xa ulinganisa, iqondo lokushisa elibandayo liyatshintsha (indalo), liya kuchaphazela kakhulu ukuchaneka komlinganiselo.Thatha inyathelo kwimbuyekezo ekupheleni kubanda ngenxa yempembelelo yokutshintsha kobushushu ekupheleni kubanda ibizwa ngokuba thermocouple isiphambuka ebandayo imbuyekezo iqhelekile.Iqhagamshelwe kwisixhobo sokulinganisa ngomqhubi okhethekileyo wembuyekezo.
Indlela yokubala imbuyekezo yesiphambuka esibandayo seThermocouple:
Ukusuka kwi-millivolt ukuya kwiqondo lokushisa: ukulinganisa iqondo lokushisa elibandayo kunye nokuguqulwa kwamaxabiso e-millivolt ahambelanayo, ixabiso le-millivolt kunye ne-thermocouple, ukuguqulwa kweqondo lokushisa;
Ukusuka kwiqondo lokushisa ukuya kwi-millivolt: ukulinganisa iqondo lokushisa langempela kunye neqondo lokushisa elibandayo kunye nokuguqulwa kwamaxabiso e-millivolt, ngokulandelanayo, emva kokukhupha ixabiso le-millivolt, ukushisa okukhawulezayo.
Ixesha lokuposa: Dec-04-2020