Ma electromagnetic flowmeters (EMF) amagwira ntchito motsatira lamulo la Faraday la Electromagnetic Induction, lomwe limafuna kuti madzi oyezedwa ayenera kudzaza bwino payipi ndikuyenda bwino kudzera mu mphamvu ya maginito ya sensa. Mwanjira imeneyi yokha, ma electrodes amatha kuzindikira molondola mphamvu ya electromotive (EMF) yomwe imapangidwa ndi madzi omwe amadula mizere ya mphamvu ya maginito, kuti atulutse deta yolondola ya kayendedwe ka madzi. Kuyika EMF pamalo okwera kwambiri papayipi kapena pansi kudzaphwanya mwachindunji mkhalidwe wogwirira ntchito wapakati uwu, zomwe zimapangitsa kuti pakhale zolakwika zazikulu pakuyeza, kusagwira ntchito bwino komanso kulephera kwa zida. Zifukwa zenizeni ndi izi:
Kukhazikitsa Pamalo Apamwamba Kwambiri Papaipi
Kuyika choyezera magetsi pamalo okwera kwambiri pa payipi ndi njira imodzi yodziwika bwino yoyikira yolakwika, yomwe ingayambitse mavuto awiri akuluakulu omwe amakhudza kulondola kwa muyeso:
Choyamba, mpweya ndi thovu zimakhala zosavuta kuzisonkhanitsa. Pakayendetsedwe ka madzi, mpweya nthawi zambiri umasakanikirana mu payipi, ndipo chifukwa cha mfundo ya mpweya woyandama, mpweya ndi thovu zimenezi zimakwera mosalekeza ndikusonkhana pamalo okwera kwambiri pa payipi. Pamene electromagnetic flowmeter yayikidwa pano, mpweya wosonkhanitsidwawo umapanga thumba la mpweya mu chubu choyezera cha sensa, chomwe chidzaphimba mwachindunji ma electrode oyezera a flowmeter. Popeza mpweya ndi chinthu chosayendetsa magetsi, chidzatseka kukhudzana pakati pa ma electrode ndi madzi oyendetsera magetsi, zomwe zimapangitsa ma electrodewo kulephera kuzindikira mphamvu ya electromotive yomwe imachokera ku madzi omwe amadula mphamvu ya maginito. Zotsatira zake, flowmeter idzawonetsa zinthu zachilendo monga kuwerenga kosakhazikika, kusinthasintha kosasinthika, ma alarm opanda kanthu a mapaipi, kapena ngakhale kusawonetsa kayendedwe ka madzi (mita ikuwonetsa 0 pamene pali kayendedwe ka madzi enieni).
Nthawi yotumizira: Meyi-11-2026