Kev ntsuas lub hauv paus ntsiab lus thiab lwm yam thev naus laus zis ntawm illuminometer
Illuminance meter ntsuas lub hauv paus ntsiab lus: Illuminance meter (los yog lux meter) yog ib qho cuab yeej tshwj xeeb rau kev ntsuas illuminance. Nws yog los ntsuas qhov degree uas qhov khoom yog illuminated, uas yog, qhov piv ntawm cov luminous flux tau nyob rau saum npoo ntawm cov khoom mus rau qhov chaw illuminated. Lub illuminance meter feem ntau yog tsim los ntawm selenium photovoltaic cell los yog silicon photovoltaic cell nrog lub lim thiab microammeter.
Illuminance calibration:
Calibration txoj cai:
Cia Ls irradiate lub photocell vertically → E=I/r2, hloov r kom tau tus nqi photocurrent nyob rau hauv txawv illumination, thiab hloov lub teev tam sim no mus rau lub illumination scale los ntawm kev sib raug zoo ntawm E thiab i.
Calibration method:
Siv lub teeb siv hluav taws xob siv hluav taws xob, ntawm qhov chaw ua haujlwm zoo ib yam li qhov chaw teeb pom kev zoo, hloov qhov nrug l ntawm photocell thiab cov teeb pom kev zoo, sau cov ntawv nyeem ntawm lub galvanometer ntawm txhua qhov kev ncua deb, thiab suav cov illuminance E los ntawm txoj cai inverse square. ntawm qhov deb E=I/r2, los ntawm A series ntawm photocurrent qhov tseem ceeb i nrog cov illuminances sib txawv tuaj yeem tau txais, uas tuaj yeem siv los ua qhov hloov pauv ntawm photocurrent i thiab illuminance E,
