Dab tsi yog cov yam ntxwv ntawm illuminance meter
● Qhov loj me thiab lub teeb yuag
Lub sijhawm siv lub ntsuas hluav taws xob yog qhov dav heev, thiab lub sijhawm siv feem ntau nyob hauv ntau qhov chaw. Yog li ntawd, thawj prerequisite rau lub portable illuminance meter yog me me thiab lub teeb yuag.
● Qhov tseeb
Txawm hais tias lux meter yog qhov zoo lossis tsis muaj kev sib raug zoo nrog nws qhov tseeb. Ntawm chav kawm, nws kuj yog ze ze rau nws tus nqi, yog li nws yog ib qho tsim nyog yuav tau yuav ib lub lux meter nrog qhov tseeb ntawm tus nqi tsim nyog. Feem ntau, qhov yuam kev yuav tsum tsis pub tshaj ± 15 feem pua.
● Xim Xaus
Cov hom teeb pom kev zoo yog tag nrho-encompassing. Qee qhov tsom mus rau cov teeb liab siab siab nrog lub wavelengths ntev, los yog xiav-violet nrog luv wavelengths xws li Daylight fluorescent teeb; kuj tseem muaj ntau qhov sib npaug sib npaug xws li incandescent noob series. Qhov rhiab heev ntawm tib lub teeb pom kev zoo rau qhov sib txawv wavelengths yuav txawv me ntsis. Yog li ntawd, yuav tsum tau them nyiaj kom tsim nyog.
● Cosine them nyiaj
Txhua leej txhua tus paub tias qhov ci ntsa iab ntawm qhov chaw illuminated muaj feem xyuam rau qhov xwm txheej ntawm lub teeb ci. Ib yam li ntawd, thaum ntsuas nrog lub teeb ntsuas lub teeb, qhov xwm txheej ntawm lub ntsuas hluav taws xob (Sensor) thiab lub teeb pom kev zoo yuav cuam tshuam rau kev nyeem ntawv tus nqi ntawm lub teeb ntsuas. Yog li ntawd, seb lub ntsuas hluav taws xob zoo puas muaj lub luag haujlwm ntawm cosine them nyiaj tsis tuaj yeem tsis quav ntsej.
