ThAma-ermocouple asetshenziswa kabanzi njengezinto zokuzwa izinga lokushisa ezisetshenziswayo zezimboni nezesayensi ngenxa yokuqina kwawo, ububanzi bokushisa obubanzi, kanye nesikhathi sokuphendula okusheshayo. Kodwa-ke, inselele evamile ngama-thermocouple yisidingo sokunciphisa i-cold junction.. I-Thermocoupleikhiqiza i-voltage ehambisana nomehluko wokushisa phakathi kokuphela kwayo kokulinganisa (ukuphela okushisayo) kanye nokuphela kwayo kokubhekisela (ukuphela okubandayo). Indawo yokubhekisela ivame ukutholakala endaweni yokufaka yethuluzi lokulinganisa, futhi izinga lokushisa layo lingashintshashintsha ngenxa yezimo zemvelo. Lolu shintsho lokushisa kwe-cold junction lungabangela amaphutha okulinganisa izinga lokushisa.
Isinxephezelo se-cold junction inqubo yokulinganisa ngokunembile izinga lokushisa le-cold junction kanye nokubuyisela umphumela walo ekuphumeni kwe-voltage ye-thermocouple. Lokhu kubalulekile ekufinyeleleni izilinganiso zokushisa ezinembile, ikakhulukazi ekusetshenzisweni okudinga ukulawulwa kokushisa okunembile. Ukusebenzisa isinxephezelo se-cold junction kubalulekile ekuqinisekiseni ukunemba nokuthembeka kwezilinganiso zokushisa ze-thermocouple. Ngaphandle kwesinxephezelo esifanele, amaphutha amakhulu angenzeka ekufundweni kwezinga lokushisa, ikakhulukazi ezindaweni ezinamazinga okushisa angazinzile ohlangothini olubandayo.
Kunezindlela eziningana zokufeza isinxephezelo se-cold junction, enye indlela evamile ukusebenzisa i-thermocouple signal conditioner. Lawa madivayisi aklanyelwe ukukala izinga lokushisa le-cold junction futhi anikeze isinxephezelo esidingekayo sokukhishwa kwe-voltage ye-thermocouple. Ama-signal conditioner angasetshenziswa njengamayunithi azimele noma ahlanganiswe nezinsimbi zokulinganisa. Ukulungiswa kwesignali eduze kwe-cold junction kungasetshenziswa ukunciphisa amaphutha ekulinganisweni kwezinga lokushisa ngaphezu kokusebenzisa i-signal conditioner ezinikele. Ngokusebenzisa amasu okuhlunga nokukhulisa afanele eduze kwe-cold junction, ukuphuma kwe-voltage ye-thermocouple kungalungiswa ukuze kuncishiswe imiphumela yokushintsha kwezinga lokushisa le-cold junction.
I-Shanghai Wangyuan Instruments of Measurement Co., Ltd. iyinkampani yaseShayina esezingeni eliphezulu lebhizinisi egxile kubuchwepheshe bokulawula izinqubo zezimboni kanye nemikhiqizo iminyaka engaphezu kwengu-20. Singahlinzeka ngokunembile nangokuthembekileama-transmitter okushisakanye nezici zokuzwa ze-cold junction ezihlanganisiweisithiyo sokuphepha esihlakaniphilengohlelo lokusebenza lokunciphisa i-cold junction oluzenzakalelayo. Zizwe ukhululekile ukuxhumana nathi ukuthola ulwazi olwengeziwe.
Isikhathi sokuthunyelwe: Disemba-29-2023