Kev sib piv ntawm cov ntsuas ntsuas kub cov ntsuas: thermocouples, thermal resistors (RTDs), ntsuas hluav taws xob, ntsuas kub

Muaj plaub ntu ntsuas kub: thermocouples, thermal resistors (RTDs), cov cua nab, thiab ntsuas kub ntsuas (ICS). Hauv qab no peb yuav qhia lawv cov ntsiab cai thiab cov yam ntxwv thiab muab lawv cov txiaj ntsig thiab qhov tsis zoo.

Thermocouple: Raws li cov nyhuv pom kev, thaum ob lub xov hlau sib txawv tau txuas rau ntawm ob qho tib si sib txawv, yuav muaj kev ua haujlwm txuas ntxiv rau hauv lub thermoelectric circuital. Theoretically, ob qho sib txawv ntawm ob tus neeg sib txawv tuaj yeem teeb tsa cov khoom siv thermoelectratic, tab sis cov tshuaj tua hluav taws xob me me, thiab kab kub me, thiab qib siab yog xaiv. Qauv xwm txheej thermocouples feem ntau muaj xya hom: E, K, R, Thermoelectric ntsuas qhov ntsuas kub yog qhov sib txawv. Xav paub cov ntsiab lus, thov khij cov rooj kawm tiav.

Thermal resistor (RTD): istuctive ntawm cov hlau ua kom pom tseeb qhov kub siab, thiab tus nqi tiv thaiv ntawm cov hlau uas hloov pauv nrog qhov ntsuas kub. Feem ntau RTDs yog ua los ntawm cov ntaub ntawv hlau ntshiab. Platinum thiab tooj liab yog cov feem ntau siv. Tsis tas li ntawd, Nickel, Mangium, Rhodium thiab lwm yam khoom siv tau siv vim tias lawv tuaj yeem tiv taus qhov kub siab thaum tswj kev ruaj khov zoo heev. Kev hloov pauv ntawm qhov tsis kam ntawm ntau cov xov hlau xws li cov coj ntawm RTD lub cev yuav cuam tshuam rau kev ntsuas kub.

Tus cua kub: zoo li RTDs, tus ua kub sov yog ntsuas kub-rhiab tiv thaiv. Tus cua sov feem ntau yog ua los ntawm cov ntaub ntawv semiconduct thiab faib ua qhov zoo coefficients (PTC) thiab qhov kub thiab tsis zoo coefficients (NTC). Feem ntau cov cua sov siv cov ntsuas kub tsis zoo, uas yog, lawv cov kev tiv thaiv tsawg dua li kub nce ntxiv. Cov nqi tiv thaiv tsis kam ntawm NTC tuaj yeem hloov pauv los ntawm ob peb feem pua ​​cov ntsiab lus ib qib Celsius, yog li tsis tau pom cov kev hloov tsheb me me, uas tsis tuaj yeem pom siv RTD lossis thermocouple voj voog. Lub siab resistivity ntawm cov cua sov muab rau lawv nrog ntsuas kev ntsuas tshwj xeeb.

Tus nqi ntawm nce rhiab siab yog qhov poob ntawm kab. Tus cua kub muaj cov khoom siv uas tsis tshua muaj txiaj ntsig uas tau nyob ntawm cov txheej txheem tsis txheeb. Tam sim no, cov chaw tsim khoom tsis tuaj yeem ua kom zoo rau cov cua nab kuab rau theem txheej txheem ntawm RTDs thiab thermorochles. Vim tias lawv yog semiconductors, tus mob kub muaj peev xwm ua rau muaj kev tsis zoo rau kev ua tsis ncaj ncees rau kev kub ntxhov ntau dua li RTDS lossis thermoco. Tus cua sov tuaj yeem ua kom me me, txhais tau tias lawv yuav teb sai sai rau qhov kub thiab txias ua rau lawv muaj kev phom sij rau lawv tus kheej. Tus cua kub muaj ntau dua li cov rTDs lossis thermocouples thiab yuav tsum tau nruab kom zoo kom tsis txhob tawg lossis kev sib cais.

Qhov ntsuas kub ntsuas nti (IC): Nws yog qhov tseeb customized cov neeg ntse uas tuaj yeem teeb tsa nrog voltage lossis cov zis tam sim no thiab tuaj yeem ua tiav cov zis uas yog linearly sib xws kom meej. Txawm li cas los xij, xws li tus ua haujlwm sov, nws muaj qhov teeb meem kub tsawg, cov teeb meem ntawm tus kheej cua kub thiab qhov tsis tshua pom tseeb tseem pom tau, thiab nws yuav tsum tau muab cov khoom siv hluav taws xob sab nraud.