Mu ufumu wamuyeso wamadzimadzi, ma electromagnetic flowmeters ndi ma ultrasonic flowmeters ndi zida ziwiri zomwe zimagwiritsidwa ntchito kwambiri. Chilichonse chili ndi mawonekedwe osiyana, ndipo kumvetsetsa kusiyana kwawo ndikofunikira kwambiri popanga chisankho choyenera m'mafakitale osiyanasiyana.
1. Mfundo Zogwirira Ntchito
Ma Electromagnetic Flowmeters
Ma electromagnetic flowmeters amagwira ntchito motsatira lamulo la Faraday la induction ya electromagnetic. Pamene conductive fluid ikuyenda kudzera mu magnetic field yopangidwa ndi meter, voltage imayambitsidwa kudutsa madzi. Voltage iyi imayambitsidwa imagwirizana ndi liwiro la madzi. Mwa masamu, voltage yoyambitsidwa E imaperekedwa ndi E=BDV, pomwe B ndi mphamvu ya magnetic field, D ndi m'mimba mwake wa chubu choyezera, ndipo V ndi liwiro lapakati la madzi. Mfundo imeneyi imalola kuyeza molondola kwambiri madzi oyendetsedwa.
Ma flowmeter a Ultrasonic
Ma ultrasound flowmeters amagwiritsa ntchito mafunde amawu poyesa liwiro la madzi. Pali mitundu iwiri ikuluikulu: transit - nthawi ndi Doppler. Transit - nthawi ma ultrasound flowmeters amayesa kusiyana kwa nthawi yomwe imatenga kuti zizindikiro za ultrasound ziyende kupita mmwamba ndi pansi mu madzi. Liwiro la kuyenda limawerengedwa kuchokera ku kusiyana kwa nthawi iyi. Ma ultrasound flowmeters a Doppler, kumbali ina, amadalira zotsatira za Doppler. Pamene mafunde a ultrasonic akuwonetsedwa kuchokera ku tinthu tating'onoting'ono kapena thovu mu madzi, kuchuluka kwa mafunde owonetsedwa kumasintha. Liwiro la kuyenda limatsimikiziridwa kuchokera ku kusintha kwa ma frequency uku.
2. Kulondola kwa Muyeso
Ma Electromagnetic Flowmeters
Ma electromagnetic flowmeters amapereka kulondola kwakukulu, nthawi zambiri mkati mwa ± 0.2% mpaka ± 1% ya mtengo woyezedwa. Amapereka magwiridwe antchito okhazikika pamitundu yosiyanasiyana ya mayendedwe, zomwe zimapangitsa kuti akhale oyenera kugwiritsidwa ntchito komwe kuyeza molondola ndikofunikira, monga m'mafakitale opanga mankhwala ndi mankhwala.
Ma flowmeter a Ultrasonic
Kulondola kwa ma flowmeter a ultrasonic kumasiyana malinga ndi mtundu. Nthawi yoyendera ma ultrasound flowmeter amatha kufikira kulondola kwa ± 0.5% mpaka ± 2%, pomwe ma flowmeter a ultrasonic a Doppler nthawi zambiri amakhala ndi kulondola kochepa, pafupifupi ± 2% mpaka ± 5%. Zinthu monga kufalikira kwa tinthu tating'onoting'ono kapena thovu m'madzi zimatha kukhudza kwambiri kulondola kwa ma flowmeter a Doppler.
3. Madzi Ogwiritsidwa Ntchito
Ma Electromagnetic Flowmeters
Ma flowmeter awa ndi oyenera madzi oyendetsera mpweya okha. Madziwo ayenera kukhala ndi mphamvu yoyendetsera magetsi yochepa, nthawi zambiri yoposa 5 μS/cm. Amagwiritsidwa ntchito kwambiri poyesa kuyenda kwa madzi, madzi otayira, ndi mankhwala osiyanasiyana.
Ma flowmeter a Ultrasonic
Ma flowmeter a Ultrasonic angagwiritsidwe ntchito pa madzi oyera komanso odetsedwa. Ma flowmeter a nthawi yodutsa amagwira ntchito bwino ndi madzi oyera kapena odetsedwa pang'ono, pomwe ma Doppler flowmeter ndi oyenera kwambiri pamadzi okhala ndi tinthu tambiri tomwe timapachikidwa kapena thovu, monga slurry ndi zimbudzi.
4. Zofunikira pa Kukhazikitsa
Ma Electromagnetic Flowmeters
Ma electromagnetic flowmeters amafuna gawo la chitoliro cholunjika pamwamba ndi pansi kuti atsimikizire kuti kuyenda kwake kuli kofanana. Kawirikawiri, chitoliro cholunjika cha mmwamba cha mainchesi 5 mpaka 10 ndi mainchesi 2 mpaka 5 pansi chimalimbikitsidwa. Amafunikanso kuyikidwa pamalo pomwe madzi amadzazidwa mokwanira mu chitolirocho.
Ma flowmeter a Ultrasonic
Kukhazikitsa ma flowmeter a ultrasonic kumakhala kosinthasintha. Clamp - pa ma flowmeter a ultrasound amatha kuyikidwa kunja popanda kudula chitoliro, zomwe zimachepetsa nthawi ndi ndalama zoyika. Komabe, kukhazikitsa kolondola kumafunikirabe kulinganiza bwino ndi kuganizira zinthu monga makulidwe a khoma la chitoliro ndi zinthu zake.
5. Mtengo
Ma Electromagnetic Flowmeters
Ma electromagnetic flowmeter nthawi zambiri amakhala okwera mtengo kwambiri chifukwa cha kapangidwe kake kapamwamba komanso kapangidwe kake. Komabe, kudalirika kwawo komanso kulondola kwawo kwa nthawi yayitali kungapangitse kuti ndalama zonse zichepe pamene kuyeza molondola ndikofunikira.
Ma flowmeter a Ultrasonic
Ma flowmeter a ultrasound, makamaka ma clamp - pa ma model, nthawi zambiri amakhala okwera mtengo kwambiri pankhani ya ndalama zoyambira. Ndi chisankho chabwino pakugwiritsa ntchito komwe kufunikira kolondola sikokwera kwambiri kapena komwe kusavuta kukhazikitsa ndikofunikira kwambiri.
Pomaliza, ma electromagnetic flowmeters ndizoyezera kuyenda kwa ma ultrasoundchilichonse chili ndi ubwino wake ndi zofooka zake. Mwa kuganizira mosamala zinthu monga mfundo zogwirira ntchito, kulondola kwa muyeso, madzi ofunikira, zofunikira pakuyika, ndi mtengo wake, mainjiniya ndi ogwiritsa ntchito amatha kusankha yoyenera kwambiri.choyezera kayendedwe ka madzipa ntchito zawo zenizeni.
Nthawi yotumizira: Epulo-08-2025