Taw qhia thiab kev khiav hauj lwm hauv paus ntsiab lus ntawm illuminometer
Illuminometer (tseem hu ua Lexometer) yog ib qho cuab yeej tshwj xeeb rau kev ntsuas luminosity thiab brightness. Nws muaj ib lub party thiab lub teeb sensor, nrog rau kev ntsuas ntau ntawm 0-50000. Qhov nruab nrab lub teeb nyob sab hauv tsev yog nyob ntawm 100-1000lux, thaum lub hnub ci sab nraum zoov yog kwv yees li 50000lux. Lux yog ib chav tsev ntawm illumination uas sawv cev rau qhov ceev ntawm lub teeb ci ntsa iab ntawm qhov chaw. Nws cov ntawv thov tseem ceeb yog sab hauv tsev, chaw ua haujlwm, chav kuaj, thiab kev tshawb fawb ib puag ncig.
Illuminometer - Cov ntsiab lus ntawm Illuminometer ntsuas
Photocell yog photoelectric element uas ncaj qha hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob. Thaum lub teeb tawm tsam ntawm qhov chaw ntawm selenium photocell, qhov teeb meem tshwm sim dhau los ntawm cov yeeb yaj kiab hlau 4 thiab mus txog qhov sib cuam tshuam ntawm semiconductor selenium txheej 2 thiab cov yeeb yaj kiab hlau 4, tsim cov nyhuv photoelectric ntawm lub interface. Qhov loj ntawm lub generated photocurrent yog proportional rau lub illumination nyob rau saum npoo ntawm lub photocell. Nyob rau ntawm lub sijhawm no, yog tias ib qho kev sib txuas sab nraud txuas nrog, qhov tam sim no yuav dhau mus, thiab tus nqi tam sim no yuav raug qhia rau ntawm microampere meter nrog qhov ntsuas ntawm Lx. Qhov loj ntawm photocurrent nyob ntawm lub zog ntawm qhov teeb meem teeb. Lub illuminometer muaj cov cuab yeej ua haujlwm, yog li nws tuaj yeem ntsuas ob qhov siab thiab qis illuminance. Hom illuminometer: 1. Visual illuminometer: siv tsis yooj yim, tsis tshua muaj neeg, tsis tshua siv 2. Photoelectric illuminometer: feem ntau siv selenium photocell illuminometer thiab silicon photocell illuminometer
Illuminometer - Hom illuminometer:
1. Visual illuminometer: siv tsis yooj yim, tsis muaj tseeb, tsis tshua siv
2. Photoelectric illuminometer: feem ntau siv selenium photocell illuminometer thiab silicon photocell illuminometer
Muaj pes tsawg leeg thiab kev siv yuav tsum tau ntawm photocell illuminometer:
1. Kev sib xyaw: microampere meter, hloov pob qhov rooj, xoom hloov kho, xaim xaim, photocell, V (λ) Kho qhov sib xyaw ntawm cov lim dej thiab lwm yam khoom siv.
Feem ntau siv selenium (Se) photocell lossis silicon (Si) photocell illuminometer, tseem hu ua lux meter
2. Cov kev cai siv:
① Photocells yuav tsum siv selenium (Se) photocells lossis silicon (Si) photocells nrog zoo linearity; Ua kom muaj kev ruaj ntseg zoo thiab muaj kev nkag siab zoo txawm tias tom qab ua haujlwm ntev; Thaum siv high E, xaiv photocells nrog siab sab hauv tsis kam, uas muaj tsawg rhiab heev thiab zoo linearity, thiab tsis yooj yim puas los ntawm lub teeb muaj zog irradiation.
② Kev them nyiaj sab hauv nrog V (λ) Kho lub lim, haum rau kev siv lub teeb pom kev ntawm lub teeb pom kev zoo heterochromatic, nrog qhov yuam kev me me
③ Yog vim li cas ntxiv ib cosine kaum compensator (milky dawb iav los yog dawb yas) nyob rau hauv pem hauv ntej ntawm lub photocell yog hais tias thaum lub teeb meem lub kaum sab xis loj, lub photocell deviates los ntawm txoj cai cosine.
④ Lub illuminometer yuav tsum ua haujlwm ntawm lossis ze ntawm chav tsev kub (qhov drift ntawm photocell hloov nrog kub)
