Illuminance Meter Technical Parameters Introduction and Selection Guide
Lub illuminance meter yog ib qho cuab yeej tshwj xeeb hauv kev ntsuas luminosity thiab brightness. Nws yog los ntsuas lub teeb siv (illuminance) yog qhov degree uas cov 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 ntsuas hluav taws xob feem ntau yog tsim los ntawm selenium photocell lossis silicon photocell thiab microammeter.
Calibration txoj cai:
Cia Ls vertically irradiate lub photocell → E=I/r2, hloov r kom tau tus nqi photocurrent nyob rau hauv txawv illuminance, thiab hloov lub teev tam sim no mus rau hauv lub illuminance scale los ntawm kev sib raug zoo ntawm E thiab i.
Txoj kev Calibration:
Siv lub teeb siv hluav taws xob teeb pom kev zoo, nyob rau hauv qhov kev ua haujlwm ntawm qhov kwv yees ntawm qhov chaw teeb pom kev zoo, hloov qhov kev ncua deb l ntawm lub photocell thiab cov teeb pom kev zoo, sau cov ntawv nyeem ntawm ammeter ntawm txhua qhov kev ncua deb, thiab xam qhov illuminance E los ntawm txoj cai inverse square. ntawm qhov deb E=I/r2, thiab mam li xam qhov illuminance E los ntawm Qhov no tuaj yeem tau txais cov txiaj ntsig photocurrent i nrog qhov sib txawv illuminance, thiab ua rau qhov hloov pauv ntawm photocurrent i thiab illuminance E, uas yog calibration nkhaus ntawm lub illuminance meter. Los ntawm qhov no, lub calibration ntawm lub illuminance meter yuav ua tau los ntawm kev faib lub dial ntawm lub illuminance meter.
Cov yam ntxwv cuam tshuam rau calibration nkhaus:
Lub photocell thiab galvanometer yuav tsum tau rov calibrated thaum lawv hloov; lub ntsuas hluav taws xob yuav tsum rov ntsuas dua tom qab siv lub sijhawm (feem ntau 1-2 zaug hauv ib xyoos); lub high-precision illuminance meter yuav calibrated nrog lub teeb siv tus qauv teeb; Lub calibration ntau yam ntawm lub illuminance meter yuav hloov qhov kev ncua deb r, los yog xaiv txawv qauv teeb, thiab xaiv ib tug me me galvanometer.
Scope ntawm kev siv:
1. Cov chaw pej xeem
Txhawm rau kom ntseeg tau tias tib neeg tuaj yeem nyob hauv lub teeb pom kev zoo, kuv lub teb chaws tau tsim cov qauv kev noj qab haus huv rau sab hauv tsev (nrog rau cov chaw pej xeem) illuminance, thiab siv cov ntsuas hluav taws xob los ntsuas qhov illuminance ntawm ntau qhov chaw.
2. Kev lag luam teeb pom kev zoo, kev lag luam yees duab, theem teeb pom kev zoo, thiab lwm yam.
Lub illuminance meter tau ua tiav rau ntau txoj haujlwm, xws li kev lag luam teeb pom kev zoo, kev lag luam yees duab, theem teeb pom kev zoo, thiab lwm yam. Cov qauv sib txawv ntawm cov illuminance meters tuaj yeem ua tau raws li cov kev ntsuas sib txawv.
3. Hoobkas ntau lawm kab
Nyob rau hauv lub Hoobkas, qhov yuav tsum tau illumination ntawm cov kab ntau lawm kuj nruj. Kev ua haujlwm tsis tu ncua yuav ua rau pom kev qaug zog thiab txo qis kev ua haujlwm zoo. Feem ntau, qhov yuav tsum tau teeb pom kev zoo yog ntau dua lossis sib npaug rau 1000Lx. Rau qhov chaw uas muaj qhov xav tau teeb pom kev zoo siab, xaiv lub ntsuas hluav taws xob loj loj tuaj yeem xaiv, nrog rau ntau qhov loj. , tuaj yeem cuam tshuam nrog kev ntsuas lub teeb pom kev zoo.
4. Daim ntawv thov ntawm cov ntsuas hluav taws xob yog qhov dav heev, suav nrog cov ntawv thov hauv peb lub neej niaj hnub, xws li cov chaw tsim khoom, tsev khaws khoom, tsev kawm ntawv, chaw ua haujlwm, tsev, kev tsim teeb pom kev zoo, chav kuaj thiab lwm yam.
Yuav ua li cas xaiv ib tug haum illuminance meter
Lub illuminance meter yog ib qho cuab yeej tshwj xeeb rau kev ntsuas luminosity thiab brightness. Lub illuminance yog ze ze rau tib neeg lub neej. Lub teeb txaus tuaj yeem tiv thaiv tib neeg los ntawm kev sib tsoo. Hloov pauv, lub teeb tsaus dhau tuaj yeem ua rau tib neeg qaug zog ntau dua li qhov muag lawv tus kheej. Tsis xis nyob lossis teeb pom kev tsis zoo yog li ntawd yog ib qho ua rau muaj kev sib tsoo thiab qaug zog.
Muaj ntau ntau cov qauv ntawm illuminance meters nyob rau hauv kev ua lag luam, thiab cov neeg siv feem ntau poob thaum yuav khoom, thiab tsis paub tias tus qauv twg haum rau lawv tus kheej siv. Yuav ua li cas xaiv lub teeb meter? Qhov tseeb, tsuav koj xaiv cov khoom lag luam los ntawm cov tuam txhab ua lag luam niaj hnub, tsis muaj teeb meem. Feem ntau, xyuam xim rau cov ntsiab lus hauv qab no:
1. Nws yuav tsum yooj yim rau kev nqa, vim tias muaj ntau lub sijhawm los siv lub ntsuas hluav taws xob, thiab lub sijhawm siv feem ntau nyob rau hauv ntau qhov chaw, yog li lub ntsuas hluav taws xob portable nrog me me thiab lub teeb yuag tuaj yeem ua rau kev ua haujlwm siab tshaj plaws.
2. Qhov tseeb yog qhov siab, yog li koj tuaj yeem muab koj tus kheej cov ntaub ntawv siv tau.
3. Rau qhov ntsuas qhov ntsuas thiab ntsuas qhov ntsuas siab, xaiv lub ntsuas qhov ntsuas qhov loj. Feem ntau, qhov loj-ntau ntawm kev lag luam tuaj yeem ntes 400,{5}} Lux kom tau raws li qhov xav tau ntawm cov teeb pom kev zoo. Rau kev ntsuas lub teeb qis, xws li kev ntsuas qhov pom kev tsaus ntuj, nws yog qhov yuav tsum tau xaiv lub teeb pom kev tsis pom kev, uas tuaj yeem pom qhov tsawg kawg nkaus ntawm 0.0001lux.
4. Lub illuminance meter yog ib qho cuab yeej uas muaj rhiab heev photosensitive ntsiab. Yog li ntawd, yog tias tus neeg siv yuav tsum tau muab daim ntawv pov thawj ntsuas ntsuas, nws yog qhov zoo tshaj plaws los xaiv cov chaw tsim khoom lag luam niaj hnub los tsim cov khoom lag luam, uas tuaj yeem txo qhov tshwm sim ntawm kev tshuaj xyuas tsis tsim nyog.
