Kwinkqubo yeekhemikhali, ukhuseleko lokusingqongileyounyango lwamanzi amdaka, ukwenziwa kwamayeza, kunye namashishini okwenza amaphepha, ukulinganiswa ngokuchanekileyo kokuhamba kwe-asidi enamandla kunye nolwelo oluqinileyo lwe-alkali olubolayo kube ngumceli mngeni ophambili kwezobuchwepheshe ixesha elide. Izixhobo zokulinganisa ukuhamba kwe-asidi enamandla kunye nolwelo oluqinileyo lwe-alkali belusoloko luyingxaki enkulu kwezobuchwepheshe. Izixhobo zokulinganisa ukuhamba kwe-asidi enamandla, ezifana ne-turbine kunye ne-vortex flowmeters, zisengozini yokubola, ukuvaleka, kunye nokuphambuka kwedatha xa zisetyenziswa kwimidiya enobungozi kakhulu, okukhokelela ekugcinweni rhoqo, iindleko eziphezulu zokutshintshwa, kunye nokusebenza okungazinzanga kwemizi-mveliso. Njengesixhobo sokulinganisa esichanekileyo nesithembekileyo kakhulu, i-flowmeter ye-electromagnetic ibe sisisombululo esithandwayo sokubona ukuhamba kwe-asidi enamandla kunye nolwelo lwe-alkali, ixhomekeke kumgaqo wayo okhethekileyo wokusebenza kunye noyilo lwesakhiwo sokulwa nokubola.
I-electromagnetic ii-flowmeterszisebenza ngokungqongqo ngokusekelwe kumthetho kaFaraday wokungeniswa kwe-electromagnetic. Xa ulwelo oluqhubayo luhamba ngentsimi yemagnethi efanayo ngaphakathi kwityhubhu yokulinganisa, ulwelo lunqumla imigca ye-magnetic induction kwaye luvelise isignali ye-voltage ebangelwayo. Ubungakanani bale voltage buhambelana ngokuthe ngqo nesantya sokuhamba kolwelo. Emva kokuba iqokelelwe kwaye isetyenzwe yi-electrode echanekileyo kunye nenkqubo yokudlulisela, ukuhamba kwe-volumetric yexesha langempela kolwelo kubalwa ngokuchanekileyo. Inzuzo ephambili yalo mgaqo wokusebenza kukuba akukho zixhobo zishukumayo okanye izinto ezithintelayo ngaphakathi kwityhubhu yokulinganisa, nto leyo ebangela ukuba kungabikho xinzelelo kwaye kungabikho thintelo ekuhambeni kolwelo. Olu phawu lolwakhiwo luthintela ngokusisiseko ukuguguleka koomatshini kunye nokuvaleka kwamasuntswana, luzivumelanisa ngokugqibeleleyo neemfuno zokulinganisa eziqhubekayo ze-corrosive chemical media.
Ukulungelelaniswa okugqwesileyo kwe-asidi enamandla kunye nolwelo lwe-alkali kuvela ekufanisweni kwezinto ezichasene nokugqwala ngobuchwephesha, olu lukhuphiswano oluphambili lwee-flowmeters ze-electromagnetic ezikumgangatho ophezulu. Kwi-media ene-acid eninzi efana ne-hydrochloric acid, i-sulfuric acid, kunye ne-nitric acid, kusetyenziswa ii-electrode ze-tantalum kunye ne-PTFE (polytetrafluoroethylene) lining. I-Tantalum metal ibonisa ukumelana nokugqwala okunamandla kakhulu kwii-asidi ezinamandla kunye ne-oxidizing media, ngelixa i-PTFE lining imelana nokugqwala kunye nokugqwala ngamakhemikhali ngaphandle kokusabela kwii-asidi. Kwi-media ene-alkali enamandla kuquka i-sodium hydroxide kunye nezisombululo ze-potassium hydroxide, ii-electrode ze-Hastelloy C alloy kunye ne-raber okanye i-PFA lining ziyacwangciswa. Ezi zidityaniswe zezinto ezenziwe ngokwezifiso zinokumelana ngempumelelo nokugqwala kweekhemikhali ixesha elide, zithintele ukugqwala kwe-electrode kunye nokuguga kwe-lining, kwaye ziqinisekise ukusebenza okuzinzileyo kokulinganisa kwiindawo ezinzima zokugqwala.
Xa kuthelekiswa nezinye izixhobo zokulinganisa ukuhamba kwamanzi,ii-flowmeters ze-electromagneticzibonisa iingenelo ezingenakutshintshwa kumlinganiselo ophakathi wokubola. Okokuqala, azichaphazeleki kukuxinana kolwelo, ubushushu, uxinano, kunye nomxholo wamasuntswana aqinileyo, okuvumela ukulinganiswa okuzinzileyo kolwelo olubolayo olunezinga ezahlukeneyo kunye nolwelo oluxutyiweyo oluqinileyo olunezigaba ezimbini. Okwesibini, ukuchaneka kokulinganisa kunokufikelela kwi-±0.5% okanye i-±0.2%, ukuhlangabezana nemigangatho engqongqo yokulinganisa iikhemikhali, ukujonga ukukhutshwa kwamanzi amdaka kwimizi-mveliso, kunye nokulinganiswa kokuthutha imibhobho. Ukongeza, isakhiwo esivalekileyo esidibeneyo kunye nomgangatho wokhuseleko oluphezulu lwe-IP68 zivumela isixhobo ukuba siziqhelanise neendawo zokusebenzela ezimanzi nezibolayo, ezinobomi benkonzo obungaphezu kweminyaka eli-10 kunye neendleko zokugcina eziphantsi kakhulu kamva.
Okwangoku, i-anti-corrosionii-flowmeters ze-electromagneticzisetyenziswe kakhulu kwiimeko zoshishino zehlabathi. Kwizityalo zeekhemikhali ezintle, zilinganisa ngokuchanekileyo ukuthuthwa kunye nokuhlanganiswa kwe-asidi egxilileyo kunye nezinto eziluhlaza ze-alkali ukuqinisekisa ukuchaneka kwefomyula yemveliso. Kwimizi-mveliso yokukhusela okusingqongileyo, zijonga ukuhamba kwamanzi amdaka asekelwe kwi-asidi kwiinkqubo zonyango lwelindle ukunceda amashishini ahlangabezane nemigangatho yokukhupha amanzi. Kwimizi-mveliso yokwenza amaphepha kunye nelaphu, zixhasa ukubonwa kokuhamba kwamanzi amdaka abangela ukubola kunye nolwelo lokuhlamba lwe-alkaline. Ngaphezu koko, umthumeli okrelekrele unokukhupha imiqondiso ye-analog ye-4-20mA kunye nemiqondiso yonxibelelwano yedijithali, efezekisa unxibelelwano olungenamthungo neenkqubo ze-PLC kunye ne-DCS zoshishino ukuxhasa imveliso ezenzekelayo kunye nokubeka iliso kwedatha ekude.
Ukuqukumbela, ngomgaqo wayo wokungenisa ulwazi ngesayensi, uyilo lobuchwephesha lokulwa nokugqwala, ukuchaneka kokulinganisa okuphezulu kunye nokusebenza okuzinzileyo,i-flowmeter ye-electromagneticiwasombulule ngokupheleleyo amanqaku okulinganisa iintlungu ze-asidi enamandla kunye nolwelo oluqinileyo lwe-alkali. Ayiphuculi nje kuphela ukuchaneka nokuzinza kokulinganisa ulwelo lwemizi-mveliso kodwa ikwanciphisa iindleko zokusebenza kunye nokugcinwa kwezixhobo, ibe sisixhobo sokulinganisa esibalulekileyo kumashishini anamhlanje okukhusela iikhemikhali kunye nokusingqongileyo.
Ixesha lokuthumela: Agasti-04-2026