Hom lub teeb ntsuas thiab siv lawv li cas
Hom illuminance meters
1. Visual illuminance meter: siv tsis yooj yim, tsis raug, tsis tshua siv
2. Photoelectric illuminance meter: Feem ntau siv selenium photovoltaic illuminance meter thiab silicon photovoltaic illuminance meter
Muaj pes tsawg leeg thiab kev siv yuav tsum tau ntawm photocell illuminance meter:
1. Composition: microammeter, hloov pob qhov rooj, xoom taw tes hloov kho, davhlau ya nyob twg, photocell, V (λ) kho lim, thiab lwm yam.
Feem ntau siv selenium (Se) photovoltaic hlwb los yog silicon (Si) photovoltaic hlwb illuminance meters, los yog lux meters
Yuav siv lub teeb meter 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 kom haum.
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 tus yuam sij) los kho qhov ntsuas ntau.
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 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 tau pom nyob rau hauv tus nyeem ntawv. Tus nqi pom zoo yog sib npaug rau tus lej pom ntawm 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 tso tawm nyob rau hauv lub kaum sab xis yog "× 2000", thiab qhov ntsuas qhov ntsuas qhov pom kev yog 1000000lx, uas yog (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 ntu sib law liag thiab sau lawv.
⑨ Tom qab txhua qhov kev ntsuas tiav, nias lub hwj huam hloov yuam sij kom txiav tawm lub hwj chim.
⑩ Npog lub photodetector npog thiab muab nws rov qab rau hauv lub thawv.
