Lub hauv paus ntsiab lus ntawm kev ntsuas ntawm Illuminance Meter yog dab tsi?
Lub illuminance meter (los yog lux meter) yog ib qho cuab yeej tshwj xeeb uas tsim los ntsuas qhov teeb pom kev zoo.
Nws yog ntsuas qhov degree ntawm illumination ntawm ib yam khoom, uas yog, qhov piv ntawm cov luminous flux tau nyob rau saum npoo ntawm cov khoom mus rau qhov chaw illuminated.
Ib qho illuminance meter feem ntau muaj cov selenium photovoltaic cell los yog silicon photovoltaic cell ua ke nrog lub lim thiab microammeter.
Photocells yog optoelectronic Cheebtsam uas hloov lub teeb lub zog ncaj qha mus rau hauv hluav taws xob zog.
Thaum lub teeb tawm tsam ntawm cov selenium photovoltaic cell, qhov teeb meem teeb hla dhau ntawm cov yeeb yaj kiab hlau 4 thiab mus txog qhov sib cuam tshuam ntawm cov semiconductor selenium txheej 2 thiab cov yeeb yaj kiab hlau 4, ua rau cov nyhuv photoelectric ntawm lub interface.
Qhov loj ntawm lub photocurrent generated muaj ib tug proportional kev sib raug zoo nrog lub illumination nyob rau saum npoo ntawm lub photovoltaic cell.
6 Yog hais tias ib qho hluav taws xob sab nraud txuas rau lub sijhawm no, tam sim no yuav ntws los ntawm, thiab tus nqi tam sim no yuav qhia rau ntawm microammeter nrog lux (Lx) raws li qhov ntsuas.
Qhov loj ntawm photocurrent nyob ntawm qhov siv ntawm qhov teeb meem teeb meem. Lub illuminance meter muaj lub iav hloov khoom siv, yog li nws tuaj yeem ntsuas ob qhov siab thiab qis illuminance.
Pawg ntawm cited illuminance meters:
1. Visual illuminance meter: siv tsis yooj yim, tsis muaj tseeb, tsis tshua siv
2. Photoelectric illuminance meter: Feem ntau siv selenium photovoltaic illuminance meter thiab silicon photovoltaic illuminance meter
Thaum siv lub ntsuas hluav taws xob UV, xyuam xim rau qhov kub thiab txias
Thaum siv, yuav tsum tau saib xyuas kom tsis txhob tau txais lub teeb muaj zog, vim tias yog tias lub photoelectric cathode raug lub teeb muaj zog rau lub sijhawm ntev, qaug zog yuav tshwm sim, ua rau lub photocathode emit txawv txav. Yog li ntawd, qhov kev tiv thaiv ntawm lub qhov rais yuav tsum tau them thaum lub illuminance meter tsis siv. Tsis tas li ntawd, qhov kub thiab txias nyob rau hauv uas UV illuminance meter ua haujlwm tsis tuaj yeem siab heev lossis qis heev. Tshwj xeeb tshaj yog rau UV lub teeb ntsuas uas siv cov khoom siv hluav taws xob zoo li cov neeg txais, qhov yuav tsum tau ua rau qhov kub thiab txias yog qhov nruj dua (feem ntau ntawm 20 degree); thaum lub sij hawm thaum lub raj photoelectric GD-5 siv los ua tus txais, qhov yuav tsum tau ua rau qhov kub thiab txias tsis nruj heev. Feem ntau, qhov kub thiab txias, qhov zoo dua; txhawm rau txo qhov tam sim no tsaus nti. Tsis tas li ntawd, thaum ntsuas qhov hluav taws xob ntawm lub teeb pom kev zoo, nws yuav tsum nyob rau sab xis ntawm lub qhov rais ntawm lub receiver. Yog tias nws qaij, qhov yuam kev loj yuav tshwm sim. Lub sijhawm no, kev kho lub kaum sab xis yog xav tau.
