1. Hom Illuminance Meters
1. Visual illuminance meter: nws tsis yooj yim rau siv, qhov tseeb tsis siab, thiab nws tsis tshua siv.
2. Photoelectric illuminance meter: feem ntau siv selenium photovoltaic illuminance meter thiab silicon photovoltaic illuminance meter.
Kev sib xyaw thiab siv cov kev cai ntawm photocell illuminometer:
1. Composition: Microammeter, hloov pob qhov rooj, xoom taw tes hloov kho, khi ncej, photocell, V (λ) kho lim, thiab lwm yam.
Feem ntau siv selenium (Se) photocell lossis silicon (Si) photocell illuminometer, tseem hu ua lux meter.
2. Yuav tsum tau siv:
① Photocells siv selenium (Se) photocells lossis silicon (Si) photocells nrog zoo linearity; lawv muaj peev xwm tswj tau zoo stability tom qab ua hauj lwm mus sij hawm ntev, thiab muaj siab rhiab heev; Thaum siab E, xaiv lub siab sab hauv photocells, uas muaj qhov rhiab heev thiab zoo linearity, tsis yooj yim puas los ntawm lub teeb pom kev zoo.
② Muaj V (λ) kho lim sab hauv, uas yog tsim rau lub teeb pom kev zoo nrog cov xim sib txawv, thiab qhov yuam kev me me.
③ Lub cosine lub kaum sab xis compensator (opal dawb iav los yog yas dawb) yog ntxiv rau pem hauv ntej ntawm lub photocell vim hais tias lub photocell deviates los ntawm txoj cai cosine thaum lub teeb meem lub kaum sab xis loj.
④ Lub illuminometer yuav tsum ua hauj lwm ntawm chav tsev kub los yog ze rau chav tsev kub (photocell drift hloov nrog kub).
2. Yuav siv lub teeb ntsuas li cas
① Tig lub zog.
② Qhib lub hau ntawm lub photodetector thiab tso lub photodetector kab rov tav nyob rau hauv txoj hauj lwm ntsuas.
③ Xaiv lub iav ntsuas qhov tsim nyog.
Yog tias tsuas yog "1" tshwm sim nyob rau sab laug kawg ntawm cov zaub, nws txhais tau hais tias lub teeb pom kev zoo dhau lawm, thiab koj yuav tsum nias qhov tseem ceeb (⑧ qhov tseem ceeb) los kho qhov ntsuas qhov sib npaug.
④ Lub illuminance meter pib ua hauj lwm thiab qhia cov illuminance tus nqi ntawm cov zaub screen.
⑤ Cov ntaub ntawv tso tawm ntawm lub vijtsam hloov pauv tas li. Thaum cov ntaub ntawv tso tawm yog qhov ruaj khov, nias lub khawm HOLD (⑧ tus yuam sij) txhawm rau xauv cov ntaub ntawv.
⑥ Nyeem thiab sau cov kev soj ntsuam pom hauv tus nyeem ntawv. Tus nqi pom zoo yog sib npaug rau tus lej pom hauv qhov kev nyeem ntawv muab faib los ntawm tus nqi ncua.
Piv txwv li: 500 yog tso tawm rau ntawm qhov screen, cov xwm txheej ntawm lub kaum sab xis yog "× 2000", thiab qhov ntsuas qhov pom kev yog 1000000lx, piv txwv li (500 × 2000).
⑦ Nias lub ntsuas phoo dua kom thim qhov kev nyeem ntawv ntsuas phoo.
⑧ Thaum txhua qhov kev soj ntsuam, peb nyeem sib law liag thiab kaw.
⑨ Tom qab txhua qhov kev ntsuas tiav, nias lub hwj huam hloov yuam sij kom txiav tawm lub hwj chim.
⑩ Kaw lub photodetector npog thiab muab tso rau hauv lub thawv.
