Sensors tsim raws li lub hauv paus ntsiab lus ntawm kev nthuav dav hlau
Cov hlau nthuav dav hauv cov lus teb rau kev hloov pauv ntawm qhov kub thiab txias, thiab cov sensors tuaj yeem hloov cov lus teb no rau hauv cov teeb liab hauv ntau txoj kev.
Bimetallic Sawb Sensors: Bimetallic strips muaj ob lub hlau nrog sib txawv coefficients ntawm expansion bonded ua ke. Nrog rau qhov kub thiab txias, cov khoom A nthuav dav ntau dua li lwm cov hlau, ua rau cov sawb khoov. Qhov curvature ntawm qhov khoov no tuaj yeem hloov mus rau hauv cov teeb liab tso zis.
Bimetallic Qws thiab Tube Sensors: Raws li qhov kub thiab txias, qhov ntev ntawm lub raj hlau (khoom A) nce, thaum qhov ntev ntawm qhov tsis yog - nthuav dav hlau pas nrig (hlau B) tsis. Qhov no linear expansion ntawm cov hlau raj vim qhov kev hloov ntawm txoj hauj lwm yuav kis tau. Hloov pauv, qhov kev nthuav tawm no tuaj yeem hloov pauv mus rau hauv cov teeb liab tso zis.
Sensors Tsim Raws Li Deformation Curves ntawm Kua thiab Gases: Cov kua thiab cov pa roj kuj raug hloov pauv nrog qhov kub thiab txias.
Ntau cov qauv tuaj yeem hloov qhov kev hloov pauv no mus rau hauv txoj haujlwm hloov pauv, yog li tsim kom muaj qhov hloov pauv ntawm cov zis (potentiometers, sensing bias, baffles, thiab lwm yam).
Resistance Sensing: Cov hlau tsis kam hloov nrog qhov kub thiab txias.
Rau cov hlau sib txawv, qhov kev hloov pauv ntawm kev tiv thaiv nws txawv nrog txhua qhov ntsuas kub ntawm qhov kub thiab txias, thiab tus nqi tiv thaiv no tuaj yeem siv ncaj qha raws li cov teeb liab tso tawm.
Muaj ob hom kev hloov pauv hloov:
Zoo Kub Coefficient: Kub nce=Resistance nce
Kub poob qis=Tsis kam txo
Tsis zoo Kub Coefficient: Kub nce=Resistance txo
Kub txo=Kuj nce
Thermocouple Sensing
Lub thermocouple muaj ob txoj hlua hlau ntawm cov khoom sib txawv welded ua ke ntawm lawv qhov kawg. Los ntawm kev ntsuas qhov ntsuas kub ntawm qhov chaw tsis muaj cua sov, qhov ntsuas kub ntawm qhov ntsuas cua sov tuaj yeem txiav txim siab raug. Vim tias nws yuav tsum muaj ob lub conductors ntawm cov khoom sib txawv, nws hu ua thermocouple. Thermocouples ua los ntawm cov ntaub ntawv sib txawv yog siv nyob rau hauv ntau qhov kub thiab txias, thiab lawv cov rhiab heev kuj txawv. Thermocouple rhiab heev yog hais txog kev hloov pauv ntawm cov zis muaj peev xwm sib txawv thaum qhov kub ntawm qhov kub ntawm qhov ntsuas kub hloov los ntawm 1 degree. Rau feem ntau cov thermocouples txhawb nqa los ntawm cov khoom siv hlau, tus nqi no yog kwv yees li ntawm 5 txog 40 microvolts / degree.
Vim tias qhov rhiab heev ntawm qhov ntsuas kub ntawm lub thermocouple yog ywj siab ntawm cov khoom tuab, qhov ntsuas kub tuaj yeem ua tau siv cov ntaub ntawv nyias heev. Vim hais tias cov khoom siv hlau siv los ua cov thermocouples muaj cov ductility zoo heev, cov ntsuas kub me me no muaj cov lus teb ceev heev thiab tuaj yeem ntsuas cov txheej txheem hloov pauv sai.