Cov yam ntxwv ntawm Kub Sensor
Tso lus
Feem coob ntawm cov hlau muaj qhov zoo tshaj coefficient ntawm kev tiv thaiv, uas yog hu ua ib tug "thermistor"
Muab piv rau thermocoples, tus nab muaj cov yam ntxwv hauv qab no:
(1) Ntawm qhov ntsuas kub tib yam, cov paib tawm hluav taws xob loj dua thiab yooj yim los ntsuas. Noj 0-100 degrees Celsius ua ib qho piv txwv, yog tias siv k thermocouple, cov zis yog 4. {}} 95mv; Lub s thermocouple yog me dua, tsuas yog 0. 643MV. Tab sis nrog cov thermistor, nws yog 100 ohms ntawm 0 degree ntawm 100 degrees Celsius, nws yog 139.1 Ohms, thiab kev nce ntxiv yog 39.1 Ohms; Yog tias siv tus neeg tooj ntsuas tooj liab siv, qhov nce ntawm kev tawm tsam tuaj yeem ncav cuag 42.8 Ohms. Ntsuas lub zog zeb lab yog qhov tseeb tsis yooj yim raws li kev ntsuas qhov nce ntxiv ntawm cov dens ntawm Ohms.
(2) Qhov tsis kam ntawm thermal tiv thaiv mus rau qhov ntsuas kub yog qhov tsim nyog yuav tsum tau txo tus nqi tiv thaiv nws yog qhov tshuaj tiv thaiv tau ploj, thiab ntsuas kub yog kwv yees li ntawm kev tiv thaiv. Hnub ua haujlwm, pib lub ntsiab lus tsis kam nqi sib raug rau cov tsis kam nqi r}} {2} {2}} degree. Cov lus teb ntawm thermocouple rau kub yog qhov tag nrho thermoelectric muaj peev xwm, thiab tsis tas yuav muaj qhov kub tshaj plaws tus nqi rau qhov ntsuas kub uas yog tus nqi siv rau cov xoom uas muaj nuj nqis.
(3) ntsuas ntsuas yuav tsum siv cov khoom siv hluav taws xob sab nraud. Thermocouples tsuas yog tsim lub zog hluav taws xob thaum sov thiab txias kawg tsis yog qhov qub. Nws yog lub zog tsim hluav taws xob sensor uas tsis tas yuav muaj lub zog hluav taws xob. Thermoelect cov txheej txheem xav tau cov txheej txheem tam sim no ua kom pom kev hloov pauv, thiab txoj haujlwm tsis tuaj yeem ua tiav los ntawm kev xaus lub zog hluav taws xob.
(4) Qhov loj me ntawm cov thermal ua kom sov siab rau feem yog qhov loj. Qhov kub xaus ntawm cov khoom siv thermoelectric yog cov sib koom ua ke sib koom ua ke me me, thiab cov tshuab thermoelectric feem ntau yog kaum millimeters ntev. Nws ntsuas qhov kub ntawm qhov kub ntawm qhov chaw.
(5) tus cua kub ua los ntawm cov ntaub ntawv zoo sib xws muaj cov ntsuas kub tsawg dua li thermoces. Vim tias thermal resors yuav tsum tau tsim los ntawm cov xov hlau winding ib ncig ntawm insulating bracket, cov khoom siv ntawm qhov kub ntawm qhov ntsuas kub. Piv txwv li, lub thermocouple ua los ntawm platinum tuaj yeem ntsuas 16 {}} 0 degree} 0 degree} 0 degree rau ntawm 1000 degree (feem ntau tsuas yog li 650 degree). Tab sis nyob rau hauv qhov kev kub siab ntau, cov thermistor tuaj yeem siv tau rau -250 degree, thiab thermocouples yog siv saum 0 degree.
