Lumen ni igipimo cy'urumuri rutangwa n'isoko y'urumuri. Ubwiza bw'urumuri rw'umurambararo akenshi bupimirwa muri lumen kuri futi cyangwa metero, bitewe n'igipimo cyakoreshejwe. Uko urumuri rurushaho kuba rwinshi ni koitara ryo gusimbuza, uko agaciro ka lumen kaba kari hejuru.
Kurikiza izi ntambwe kugira ngo ubare umusaruro w'urumuri rw'inkomoko y'urumuri:
1. Kumenya urumuri: Ingano yose y'urumuri rutangwa n'isoko y'urumuri, ipimwa muri lumens, yitwa urumuri. Aya makuru aboneka ku rupapuro rw'amakuru cyangwa ku ipaki y'urumuri.
2. Reba ingano y'agace: Niba ushaka kumenya umusaruro wa lumen kuri metero kare cyangwa metero kare, ugomba kubara agace kamurikirwa. Kugira ngo ubigereho, gabanya urumuri rw'agace kose kamurikirwa. Niba urumuri rwa lumen 1000 rumurikira icyumba cya metero kare 100, umusaruro wa lumen kuri metero kare ni 10 (1000/100 = 10).
3. subiza inyuma inguni yo kureba: Niba ushaka kumenya umusaruro wa lumen ku nguni runaka yo kureba, ugomba kwishyura inguni y'urumuri rw'aho urumuri ruturuka. Ibi bikunze kugaragara mu byiciro kandi biboneka ku rupapuro rw'amakuru cyangwa ku ipaki. Ushobora gukoresha formula kugira ngo ubare umusaruro wa lumen ku nguni runaka yo kureba, cyangwa ushobora gukoresha itegeko rya kare rihindagurika kugira ngo ubone hafi.
Wibuke ko ubushobozi bw'urumuri bushobora gutandukana bitewe n'ibindi bipimo, nko kugaragara kw'ubuso mu gace karimo gushyuha. Kubera iyo mpamvu, umusaruro wa lumen ni kimwe mu bintu ugomba kwitaho mu gihe uhitamo isoko y'urumuri.
Umucyo ukwiye kuriagace k'amatara yo imbereBitandukanye bitewe n'ubwoko n'icyo urumuri rugamije. Ariko, urwego rwiza rw'amatara ya LED rwaba hagati ya lumens 150 na 300 kuri futi (cyangwa lumens 500 na 1000 kuri metero). Uru rugero rurabagirana bihagije kugira ngo rutange urumuri rukwiye ku mirimo nko guteka, gusoma, cyangwa gukora kuri mudasobwa, mu gihe kandi rukoresha ingufu nke kandi rukagira uruhare mu kurema ibidukikije byiza kandi biruhura. Wibuke ko ubushyuhe bw'amabara n'imiterere y'urupapuro, ndetse n'intera iri hagati y'urupapuro n'ubuso burimo kumurikwa, byose bishobora kugira ingaruka ku musaruro wa lumens.
Igihe cyo kohereza: Kamena-14-2023
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