Iingcingo zembuyekezo zimbini zeengcingo ezinomaleko wokugquma onexabiso elilinganayo le-thermoelectromotive force ye-thermocouple ehambelanayo kwiqondo elithile lobushushu (0~100°C). Iimpazamo ngenxa yokutshintsha kweqondo lokushisa kwindawo yokuhlangana. Lo mhleli ulandelayo uya kukwazisa ukuba yintoni impahla thermocouple imbuyekezo ucingo, yintoni umsebenzi thermocouple imbuyekezo ucingo, kunye nokuhlelwa thermocouple ucingo imbuyekezo.
1. Yintoni into eyenziwa yintambo yembuyekezo ye-thermocouple?
Ucingo lwembuyekezo jikelele lufuna ukuba i-electrode echanekileyo kunye nembi ukuba ifane neyona nto ilungileyo kunye nembi ye-thermocouple. I-K-uhlobo lwe-thermocouples i-nickel-cadmium (i-positive) kunye ne-nickel-silicon (i-negative), ngoko ngokomgangatho, iingcingo zembuyekezo ye-nickel-cadmium-nickel-silicon kufuneka zikhethwe.
2. Yintoni umsebenzi wocingo lwembuyekezo ye-thermocouple
Kukwandisa i-electrode eshushu, oko kukuthi, isiphelo esibandayo se-thermocouple ehambayo, kwaye udibanise nesixhobo sokubonisa ukwenza inkqubo yokulinganisa ubushushu. Ngokulinganayo ukwamkela umgangatho wesizwe we-IEC 584-3 "I-Thermocouple Icandelo 3 - I-Compensation Wire". Iimveliso zisetyenziswa ikakhulu kwizixhobo ezahlukeneyo zokulinganisa ubushushu, kwaye zisetyenziswe ngokubanzi kumandla enyukliya, kwipetroleum, kwikhemikhali, kwisinyithi, kumandla ombane kunye namanye amasebe.
3. Ukuhlelwa kweengcingo zembuyekezo ze-thermocouple
Ngokomgaqo, yahlulwe ngohlobo lolwandiso kunye nohlobo lwembuyekezo. Ukubunjwa kweekhemikhali ezibizwa ngokuba yi-alloy wire yohlobo lolwandiso lufana nelo le-thermocouple ehambelanayo, ngoko ke amandla e-thermoelectric nawo ayafana. Imelwe ngu "X" kwimodeli, kunye nokwakheka kweekhemikhali okubizwa ngokuba yi-alloy wire yohlobo lwembuyekezo iyafana. Ihluke kwi-thermocouple ehambelanayo, kodwa kwiqondo lokushisa elisebenzayo, amandla e-thermoelectric asondele kwixabiso legama le-thermoelectric ye-thermocouple ehambelanayo, emele "C" kwimodeli.
Ukuchaneka kwembuyekezo kwahlulwe ngokwebakala eliqhelekileyo kunye nebakala lokuchaneka. Impazamo emva kwembuyekezo yebakala elichanekileyo iba sisiqingatha kuphela sebakala eliqhelekileyo, elidla ngokusetyenziswa kwiindawo ezineemfuno zokuchaneka komlinganiselo ophezulu. Ngokomzekelo, kwiingcingo zembuyekezo zamanani okuphumelela i-S kunye no-R, ukunyamezela kwinqanaba elichanekileyo ngu-± 2.5 ° C, kwaye ukunyamezela kwebakala eliqhelekileyo ngu-± 5.0 ° C; kwiingcingo zembuyekezo zamanani okuphumelela i-K kunye ne-N, ukunyamezela ibakala lokuchaneka ± 1.5 ° C, ukunyamezela kwibakala eliqhelekileyo ± 2.5℃. Kwimodeli, ibakala eliqhelekileyo alimakishwanga, kwaye ibakala lokuchaneka longezwa ngo-“S”.
Ukususela kwiqondo lokushisa elisebenzayo, lihlukaniswe kusetyenziso oluqhelekileyo kunye nokusetyenziswa kobushushu. Ubushushu bokusebenza bokusetyenziswa ngokubanzi yi-0 ~ 100 °C (embalwa yi-0 ~ 70 °C);
Ukongeza, i-wire core inokohlulwa ibe yi-single-strand kunye ne-multi-core (i-soft wire) iingcingo zembuyekezo, kwaye zinokwahlulwa zibe ziingcingo eziqhelekileyo nezikhuselweyo zembuyekezo nokuba zinendawo ekhuselayo, kwaye kukho iingcingo zembuyekezo. Iisekethe ezikhuselekileyo ezinikezelwe kwiziganeko ezinobungqina bokudubula.