Kev faib tawm thiab siv lub teeb ntsuas ntsuas
Hom illuminance meters
1. Visual illuminance meter: Nws tsis yooj yim rau siv, muaj qhov tseeb tsawg thiab tsis tshua siv.
2. Photoelectric illuminance meter: Selenium photovoltaic illuminance meter thiab silicon photovoltaic illuminance meter yog feem ntau siv.
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.
Selenium (Se) photovoltaic cells los yog silicon (Si) photovoltaic hlwb feem ntau yog siv los ua lub teeb pom kev, los yog hu ua lux meters.
2. Cov kev cai siv:
① Photovoltaic hlwb yuav tsum siv selenium (Se) photovoltaic hlwb los yog silicon (Si) photovoltaic hlwb nrog linearity zoo; lawv muaj peev xwm tswj tau zoo stability rau lub sij hawm ntev thiab muaj siab rhiab heev; Thaum E yog siab, siv cov cell photovoltaic nrog siab sab hauv tsis kam, uas muaj tsawg rhiab heev thiab zoo linearity. , tsis yooj yim puas los ntawm lub teeb muaj zog.
② Muaj V (λ) kho lim sab hauv, uas yog tsim rau illumination ntawm lub teeb qhov chaw nrog txawv xim kub thiab muaj me me yuam kev.
③ Yog vim li cas yog vim li cas lub cosine lub kaum sab xis compensator (opalescent iav los yog yas dawb) yog ntxiv rau pem hauv ntej ntawm lub photovoltaic cell yog hais tias thaum lub teeb meem lub kaum sab xis loj, lub photovoltaic cell deviates los ntawm txoj cai cosine.
④ Lub illuminometer yuav tsum ua hauj lwm ntawm chav tsev kub los yog ze rau chav tsev kub (photocell drift hloov nrog kub hloov).
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 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 haujlwm thiab qhia txog tus nqi illuminance ntawm lub vijtsam zaub.
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 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.
