Mamita a Madzi a Ultrasonic vs. Electromagnetic: Kuyerekeza Konse

Mfundo Zofunikira Zogwirira Ntchito​

Ma ultrasound water meter amadalira kusiyana kwa transit-time kapena Doppler effect. Ma transit-time model amatumiza ma ultrasound signals pamodzi ndi komanso motsutsana ndi kuyenda kwa madzi; nthawi yomwe ili pakati pa ma signals awa imawerengera liwiro la kuyenda. Ma Doppler model, mosiyana, amazindikira kusintha kwa ma frequency kuchokera ku ma ultrasound mafunde omwe amatuluka m'madzi, akugwira ntchito bwino ngakhale ndi kuyenda kosakhazikika.​

Ma electromagnetic water meter amagwiritsa ntchito Faraday's Law of Electromagnetic Induction. Amapanga mphamvu ya maginito yofanana kudutsa chitolirocho. Madzi oyenda m'madzi akamayenda m'mundawu, amapanga mphamvu ya electromotive (EMF) mu ma electrodes—mphamvu ya EMF imagwirizana mwachindunji ndi liwiro la kuyenda, zomwe zimathandiza kuyeza molondola.​

Kusiyana Kofunika Kwambiri kwa Magwiridwe Antchito​

Ponena za kulondola, ma electromagnetic meter nthawi zambiri amakhala ndi malire pang'ono: ambiri amakhala ndi kulondola kwa ±0.2% mpaka ±0.5% pamlingo wa flow, pomwe ma ultrasonic model amakhala kuyambira ±0.5% (yamalonda) mpaka ±0.2% (yamafakitale). Kuti flow iyende bwino, ma electromagnetic meter amapereka turndown ratio mpaka 1:1000, pogwira flow yotsika kwambiri komanso yokwera kwambiri. Ma ultrasound meter amafika 1:500, olimbabe koma osasinthasintha kwambiri pa flow yokwera kwambiri.​

Kugwirizana kwa ma media ndi kusiyana kwakukulu. Ma ultrasound mita amagwira ntchito ndi zakumwa zoyendetsa ndi zosayendetsa (monga madzi oyera, mankhwala), zomwe zimapangitsa kuti zikhale zabwino kwambiri m'mafakitale monga mankhwala. Ma electromagnetic mita amafuna madzi okhala ndi mphamvu yoyendetsa ≥5 μS/cm — amalephera ndi madzi oyera kapena mafuta.​

Zofunikira pakuyika nazonso zimasiyana. Ma ultrasound mita oyendera nthawi yodutsa amafunika mainchesi 5-10 owongoka a mapaipi opita pamwamba/pansi kuti ayende bwino, pomwe ma Doppler model ndi osinthasintha. Ma electromagnetic mita amafunikira mainchesi 3-5 okha owongoka, ndipo ma electrode awo opukutidwa ndi madzi amapewa kusokonezeka kwa kayendedwe ka madzi.​

Ubwino ndi Zofooka​

Ma ultrasound mita amawala kwambiri chifukwa cha kusinthasintha kwake: mitundu yolumikizira imayikidwa kunja, palibe kusintha kwa mapaipi komwe kumafunika—kwabwino kwambiri pokonzanso. Amakhalanso ndi zinthu zochepa zosamalira, popanda zida zosuntha zomwe zingakhudze madzi. Komabe, kutayikira kwakukulu kapena thovu la mpweya zimatha kusokoneza kulondola, ndipo mitundu ya mafakitale imadula mtengo.​

Ma electromagnetic meter amagwira ntchito bwino kwambiri m'mikhalidwe yovuta: ma electrode osagwira dzimbiri (tantalum, platinum-iridium) amagwira madzi otayira ndi madzi okhala ndi sediment yambiri. Amalumikizana mosavuta ndi makina a IoT kuti aziwunika nthawi yeniyeni. Koma kudalira kwawo kuyendetsa magetsi kumalepheretsa kugwiritsa ntchito magetsi, ndipo ambiri amafunikira mphamvu zakunja - si abwino kwambiri kumadera akutali.​

Zochitika Zabwino Kwambiri Zogwiritsira Ntchito​

Ma ultrasound mita ndi abwino kwambiri pa nyumba zogona/zamalonda (ma diameter ang'onoang'ono, madzi a pampopi), makina amadzi oyera (mankhwala, ma lab), ndi kukonzanso mapaipi akale. Amathandizanso mapaipi akuluakulu a boma kapena mafakitale.​

Ma electromagnetic meter ndi abwino kwambiri poyang'anira ntchito zamafakitale (mankhwala, malo osungira madzi otayira), kufalitsa madzi m'matauni (kupeza kutuluka kwa madzi), malo ochitira malonda (kugwiritsa ntchito madzi osakanikirana), ndi ulimi wothirira (madzi apansi panthaka oyendetsedwa ndi madzi).

Mapeto​

Mamita onsewa ndi apamwamba, koma mphamvu zawo zimatsogolera kusankha. Sankhani ma ultrasound a ma media osayendetsa magetsi kapena ma retrofit; ma electromagnetic kuti azitha kulondola kwambiri pogwiritsa ntchito ma media oyendetsera magetsi kapena malo ovuta. Kumvetsetsa kusiyana kumeneku kumatsimikizira kuti madzi amayesedwa bwino, kaya ndi olipira, owongolera mafakitale, kapena oyang'anira mizinda.​