Dab tsi yog kev sib txawv ntawm tus cua sov thiab ib qho thermocouple?

Thermocouples thiab thermal resistors ob puas yuav sib cuag ntsuas kub ntsuas ntsuas kub. Txawm hais tias lawv muaj tib yam kev ua ntsuas ntsuas ntsuas kub ntawm cov khoom, lawv cov ntsiab cai thiab cov yam ntxwv tsis zoo ib yam.

Thermocots yog dav siv cov khoom kub nyob rau hauv kev ntsuas kub, tus qauv los ntawm kev ntsuas dav dav, ua rau nws yooj yim rau kev tswj hwm tsis siv neeg. Qhov ntsuas kub ntsuas ntawm cov thermocokas yog raws li cov nyhuv thermoelectric nyhuv. Txuas ob tus neeg sib txawv lossis cov semiconductors rau hauv lub voj voog kaw, thaum lub qhov kub ntawm ob lub junctionss sib txawv, lub peev xwm thermoelectric yuav tsim tawm hauv Circuit Court. Qhov tshwm sim no hu ua thermoelectric nyhuv, tseem hu ua Showbeck nyhuv. Lub thermoelectric peev xwm tsim nyob rau hauv ib tug kaw Circuit Cours muaj ob hom muaj peev xwm: thermoeltric peev xwm thiab kev sib cuag.
Thermoelectric muaj peev xwm hais txog lub zog hluav taws xob muaj peev xwm tsim ntawm ob xaus ntawm tib tus neeg saib xyuas vim muaj ntau qhov kub. Cov neeg sib txawv muaj cov hluav taws xob sib txawv, yog li lawv lub peev xwm hluav taws xob kuj txawv. Hu rau lub peev xwm, raws li lub npe qhia, yog hais txog lub peev xwm hluav taws xob tsim thaum muaj ob tus neeg sib txawv tuaj rau hauv kev sib cuag, ua rau muaj qee yam ntawm hluav taws xob diffusion. Thaum lawv mus txog ib qho kev sib luag, qhov ntau ntawm kev tiv tauj nyob ntawm cov khoom siv ntawm ob tus neeg sib txawv thiab ntsuas kub ntawm lawv qhov chaw sib cuag. Tam sim no, muaj cov qauv kev qhia tshwj xeeb rau thermocouples siv thoob ntiaj teb, uas yog muab faib ua ke ntawm 270 ntsuas tau mus txog xyoo thiab T. Lawv qhov ntsuas Celsius thiab txog 1800 degrees Celsius. Ntawm lawv, B, R, thiab S yog rau lub platinum series thermocouples. Txij li thaum Platinum yog ib qho khoom siv platinum, lawv kuj tau hu ua cov khoom siv hlau tawv, thaum cov seem uas seem tau hu ua pheej yig hlau thermocophles.
Muaj ob hom thermocouple qauv, hom thiab hom muaj sia. Cov xov xwm kub zoo tib yam feem ntau muaj cov hluav taws kub ultrasonic, cov ntaub qhwv thermocous, thiab cov tes tsho insulating, thiab ncab cov tes tsho tiv no sib sau ua ke thiab ncab.
Lub teeb hluav taws xob hluav taws xob ntawm qhov thermocouple yuav tsum muaj hlau tshwj xeeb rau kev sib kis, uas peb hu rau cov xaim hluav taws xob. Qhov sib txawv ntawm thermoco yuav tsum muaj cov xov tooj sib txawv, uas yog siv qhov kawg ntawm lub zog hluav taws xob kom deb ntawm lub zog hluav taws xob, yog muaj stabilizing kub ntawm kev siv kawg. Cov xov cov xov tooj tau muab faib ua ob hom: hom nyiaj them thiab txuas ntxiv. Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov hlau txuas ntxiv yog tib yam li cov nyiaj them thermocouple. Txawm li cas los xij, hauv kev coj ua, qhov hlau txuas txuas ntxiv tsis yog ua los ntawm tib cov khoom siv thermocouple, thiab feem ntau hloov nrog ib lub tshuab hluav taws xob nrog cov thermocouple. Kev sib txuas ntawm cov xaim hluav taws xob thiab cov thermocouple yog feem ntau ntshiab, nrog tus ncej zoo ntawm cov xaim liab thiab tus ncej tsis zoo txuas nrog cov xim ntxiv. Cov khoom siv ntawm cov xov hlau feem ntau yog tooj liab npib tsib xee xwb.
Txawm hais tias qhov thermal reses tau siv dav hauv kev lag luam, lawv daim ntawv thov raug txwv vim lawv ntsuas qhov ntsuas kub. Qhov ntsuas kub ntsuas ntawm cov thermal resistors yog raws tus yam ntxwv uas cov txiaj ntsig tsis kam ntawm kev hloov pauv nrog kub. Nws tseem muaj ntau yam zoo, xws li cov paib hluav taws xob ntawm cov teeb tsa hluav taws xob, qhov kev ruaj khov siab, zoo sib cuam tshuam zoo thiab sib txuas lus zoo. Txawm li cas los xij, nws yuav tsum muaj kev zam txim rau kev zam thiab tsis tuaj yeem ntsuas qhov kub hloov tam sim no.
Cov cua sov muaj cov cua sov feem ntau siv PT100, PT10, CUES50, ntsuas kub ntawm Celsinum tsis kam yog}}} rau 140 degrees Celsius. Tus thermanicors thiab thermorotces muaj tib hom kev sib txawv, tab sis lawv tsis tas yuav tsum them xov hlau thiab yog pheej yig dua thermocouples.