1. Me me thiab lub teeb yuag
Cov cib fim rau illuminometers yuav siv tau yog qhov dav heev, thiab lub sij hawm ntawm daim ntawv thov feem ntau nyob rau hauv ntau qhov chaw, yog li portable loj thiab lub teeb yuag yog thawj prerequisites rau illuminometers.
2. Qhov tseeb
Seb lub illuminance meter yog qhov zoo los yog phem yog kiag li muaj feem xyuam rau nws qhov tseeb. Ntawm chav kawm, nws kuj yog ze ze rau nws tus nqi. Yog li ntawd, nws yog ib qho tsim nyog yuav tau yuav lub teeb pom kev zoo illuminometer ntawm tus nqi tsim nyog. Feem ntau, qhov yuam kev yuav tsum tsis pub tshaj ± 15 feem pua.
3. Xim them nyiaj
Cov hom teeb pom kev zoo yog tag nrho-encompassing, ib txhia nyiam cov teeb liab siab siab nrog lub wavelengths ntev, los yog xiav-violet teeb nrog luv wavelengths xws li Daylight fluorescent teeb; kuj tseem muaj ntau qhov sib npaug sib npaug xws li cov qij taws teeb, tib lub illuminometer yuav muaj qhov sib txawv me ntsis rau qhov sib txawv wavelengths. Sib txawv, yog li tsim nyog them nyiaj.
4. Cosine them nyiaj
Peb txhua tus paub tias qhov ci ntsa iab ntawm qhov ci ntsa iab yog cuam tshuam nrog qhov xwm txheej ntawm lub teeb ci. Rau tib lub laj thawj, thaum ntsuas nrog lub illuminometer, lub sensor (Sensor) thiab qhov xwm txheej ntawm lub teeb ci yuav cuam tshuam rau kev nyeem ntawv tus nqi ntawm illuminometer. Yog li seb lub illuminometer zoo muaj qhov ua haujlwm ntawm cosine nyiaj tsis tuaj yeem tsis quav ntsej.
