ThIi-ermocouples zisetyenziswa kakhulu njengezinto ze-thermocouples kwizicelo zoshishino nezenzululwazi ngenxa yokuba ziqinile, ububanzi bobushushu, kunye nexesha lokuphendula ngokukhawuleza. Nangona kunjalo, umngeni oqhelekileyo kwii-thermocouples kukufuneka kwe-cold junction compensation.. I-Thermocoupleivelisa i-voltage ehambelana nomahluko wobushushu phakathi kwesiphelo sayo sokulinganisa (isiphelo esishushu) kunye nesiphelo sayo sokulinganisa (isiphelo esibandayo). Indawo yokudibanisa isalathiso idla ngokuba kwindawo yokufaka isixhobo sokulinganisa, kwaye ubushushu bayo bunokutshintshatshintsha ngenxa yeemeko zendalo. Olu tshintsho kubushushu bokudibanisa ibala lunokubangela iimpazamo zokulinganisa ubushushu.
I-cold junction compensation yinkqubo yokulinganisa ngokuchanekileyo ubushushu be-cold junction kunye nokubuyisela impembelelo yayo kwi-voltage output ye-thermocouple. Oku kubalulekile ekufezekiseni imilinganiselo yobushushu echanekileyo, ngakumbi kwizicelo ezifuna ulawulo lobushushu oluchanekileyo. Ukusebenzisa i-cold junction compensation kubalulekile ukuqinisekisa ukuchaneka nokuthembeka kwemilinganiselo yobushushu be-thermocouple. Ngaphandle kwembuyekezo efanelekileyo, iimpazamo ezibalulekileyo zinokwenzeka kufundo lobushushu, ngakumbi kwiindawo ezinamaqondo obushushu angazinzile kwicala lokubanda.
Kukho iindlela ezahlukeneyo zokufezekisa imbuyekezo ye-cold junction, enye indlela eqhelekileyo kukusebenzisa i-thermocouple signal conditioner. Ezi zixhobo zenzelwe ukulinganisa ubushushu be-cold junction kwaye zibonelele ngembuyekezo efunekayo kwi-voltage output ye-thermocouple. Ii-signal conditioners zingasetyenziswa njengeeyunithi ezizimeleyo okanye zifakwe kwizixhobo zokulinganisa. I-signal conditioning kufutshane ne-cold junction ingasetyenziselwa ukunciphisa iimpazamo kwimilinganiselo yobushushu ukongeza ekusebenziseni i-signal conditioner ezinikeleyo. Ngokusebenzisa iindlela ezifanelekileyo zokucoca kunye nokukhulisa kufutshane ne-cold junction, i-thermocouple voltage output ingalungiswa ukuze kuncitshiswe imiphumo yotshintsho lobushushu be-cold junction.
IShanghai Wangyuan Instruments of Measurement Co., Ltd. yinkampani yaseTshayina ekumgangatho ophezulu weshishini egxile kubuchwepheshe bokulawula iinkqubo zoshishino kunye neemveliso kangangeminyaka engaphezu kwama-20. Singabonelela ngokuchanekileyo nangokuthembekileyoizithumeli zobushushukunye nezinto zokuva ezikwindawo ebandayo ezihlawulelwe i-thermocouple kunyeumqobo wokhuseleko okrelekrelekunye nomsebenzi wokuhlawula i-automatic cold junction. Zive ukhululekile ukuqhagamshelana nathi ukuze ufumane ulwazi oluthe kratya.
Ixesha lokuthumela: Disemba-29-2023