Calibration txoj kev thiab cov txheej txheem rau kev siv illuminance meters
Illuminance meter yog ib qho cuab yeej tshwj xeeb rau kev ntsuas luminosity thiab brightness. Nws yog los ntsuas qhov siv ntawm lub teeb (illuminance) yog qhov ntsuas ntawm qhov pom ntawm qhov khoom, uas yog, qhov chaw ntawm cov khoom tau txais los ntawm luminous flux thiab qhov sib piv ntawm thaj chaw illuminated. Illuminance meter feem ntau yog tsim los ntawm selenium photocell lossis silicon photocell thiab microampere meter.
Calibration method ntawm illuminance meter:
Kev siv lub teeb siv hluav taws xob teeb pom kev zoo, nyob ze rau qhov chaw ua haujlwm ntawm qhov chaw teeb pom kev, hloov lub photocell thiab tus qauv teeb nyob deb l, kaw nyob rau hauv qhov kev ncua deb ntawm ammeter nyeem, los ntawm qhov kev ncua deb inverse square law E {{0 } } I / r2 xam ntawm lub teeb illuminance E, los ntawm qhov sib txawv illuminance ntawm lub teeb tam sim no tus nqi i, rau lub photocurrent i thiab illuminance E nkhaus, uas yog, rau lub illuminance meter calibration nkhaus yuav ua tau los ntawm no dial. ntawm illuminance meter. Indexing uas yog lub calibration ntawm lub illuminance meter
Cov yam ntxwv cuam tshuam rau calibration nkhaus:
Photocells thiab ammeter hloov yuav tsum tau rov calibrated; illuminance meter tom qab ib lub sij hawm ntawm lub sij hawm yuav tsum tau re-calibrated illuminance meter (feem ntau 1-2 zaug ib xyoos yuav tsum tau xyuas); high-precision illuminance meter tuaj yeem siv los kuaj xyuas lub teeb siv ntawm cov qauv teeb; nthuav qhov ntau ntawm illuminance meter tuaj yeem hloov pauv mus rau calibrate qhov deb r, koj tuaj yeem xaiv cov qauv sib txawv, qhov kev xaiv ntawm qhov me me ntawm ammeter.
Cov kauj ruam rau kev siv illuminance meter:
① Qhib lub hwj chim.
② Qhib lub hau ntawm lub teeb ntes thiab tso lub teeb ntes kab rov tav rau hauv txoj haujlwm ntsuas.
③ Xaiv lub iav ntsuas qhov tsim nyog. Yog hais tias sab laug kawg ntawm cov zaub tsuas pom "1", nws txhais tau hais tias lub illumination ntau dhau lawm, koj yuav tsum nias qhov ntau yam tseem ceeb (⑧ key), kho lub sij hawm ntsuas.
④ Lub illuminance meter pib ua hauj lwm thiab qhia cov illuminance tus nqi ntawm cov zaub.
⑤ Cov ntaub ntawv qhia ntawm cov zaub hloov tas li, thaum cov ntaub ntawv tso saib ruaj khov dua, nias lub khawm HOLD (⑧ tus yuam sij) txhawm rau xauv cov ntaub ntawv.
⑥ Nyeem thiab sau cov txiaj ntsig pom nyob rau hauv cov ntawv nyeem. Tus nqi pom zoo yog sib npaug rau cov khoom ntawm tus lej tso tawm thiab qhov ntau tus nqi hauv tus nyeem ntawv. Piv txwv li: lub vijtsam qhia 500, lub kaum sab xis ntawm lub xeev cov zaub yog "× 2000", qhov ntsuas qhov ntsuas qhov pom ntawm 1,000,000lx, uas yog (500 × 2000).
⑦ Nias lub ntsuas phoo dua kom thim qhov kev nyeem tus nqi ntsuas phoo.
⑧ Txhua qhov kev soj ntsuam, peb nyeem sib law liag thiab sau cia.
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 hau ntawm lub teeb pom kev thiab muab nws rov qab rau hauv lub thawv.
