Taw qhia rau hom thiab kev siv ntawm illuminometers
Hom illuminometers
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:
Muaj pes tsawg leeg: microampere meter, hloov pob qhov rooj, xoom hloov kho, lub davhlau ya nyob twg ncej, 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
Kev siv illuminometer:
① Qhib lub hwj chim.
② Qhib lub hau ntawm lub photodetector thiab tso nws kab rov tav nyob rau hauv txoj hauj lwm ntsuas.
③ Xaiv lub iav uas haum rau kev ntsuas.
Yog tias tsuas yog "1" tshwm sim nyob rau sab laug kawg ntawm lub vijtsam zaub, nws qhia tias muaj teeb meem ntau dhau. Nws yog ib qho tsim nyog yuav tsum nias qhov yuam sij ntau yam (⑧ tus yuam sij) los kho qhov ntsuas ntau yam.
④ Lub illuminometer pib ua haujlwm thiab qhia txog tus nqi illuminance ntawm qhov screen.
⑤ Cov ntaub ntawv tso tawm ntawm lub vijtsam zaub hloov 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 txiaj ntsig pom nyob hauv tus nyeem ntawv. Tus nqi pom zoo yog sib npaug rau cov khoom ntawm tus lej tso tawm hauv tus nyeem ntawv thiab tus nqi ntau.
Piv txwv li, 500 yog tso tawm rau ntawm qhov screen, thiab cov xwm txheej yog tshwm nyob rau hauv qab txoj cai ces kaum "× 2000", nrog ib tug illuminance ntsuas tus nqi ntawm 1000000lx, piv txwv li (500 × 2000).
⑦ Nias lub ntsuas phoo dua kom thim qhov kev nyeem tus nqi ntsuas phoo.
⑧ Thaum txhua qhov kev soj ntsuam, nyeem peb daim ntawv nyeem sib law liag thiab sau lawv.
⑨ Tom qab txhua qhov kev ntsuas ua tiav, nias lub hwj huam hloov khawm kom txiav tawm lub hwj huam mov.
⑩ Npog lub photodetector thiab hloov nws rau hauv lub thawv.
