Kukweziphi iimeko apho i-electromagnetic flowmeter ingafanelekanga ukusetyenziswa?

Iimitha zokuhamba kwe-electromagneticzizixhobo ezilinganisa ukuhamba kolwelo oluqhubayo olusekelwe kumgaqo wokungeniswa kwe-electromagnetic. Ngokuqhelekileyo azifanelekanga ukusetyenziswa kwezi meko zilandelayo:

1. Ukulinganisa ulwelo olungenakho ukukhupha umbane: Umgaqo osebenzayo weemitha zokuhamba kombane usekelwe ekudalweni kwamandla e-electromotive abangelwayo xa ulwelo oluqhubayo lunqumla imigca yamandla emagnethi kwintsimi yemagnethi. Ke ngoko, ulwelo olulinganisiweyo kufuneka lube nombane othile oqhubayo. Ukuba umbane oqhubayo wolwelo olulinganisiweyo uphantsi kakhulu, njengamanzi acocekileyo, ipetroliyam, utywala, kunye nezinye izinto ezingasebenziyo okanye ezingasebenziyo, imitha yokuhamba kombane ayinakuvelisa imiqondiso eyaneleyo ebangelwayo, nto leyo ekhokelela ekulinganisweni okungachanekanga okanye okungenakwenzeka.
2. Iqulethe inani elikhulu lezinto ezibizwa ngokuba yi-ferromagnetic okanye amaqamza: Xa ulwelo olulinganisiweyo luqulethe inani elikhulu lezinto ezibizwa ngokuba yi-ferromagnetic, luya kuphazamisana nentsimi yemagnethi yemitha yokuhamba kwe-electromagnetic kwaye luchaphazele ukuchaneka kokulinganisa. Ukongeza, ukubakho kwenani elikhulu lamaqamza kulwelo kuya kuba nefuthe elibi kumlinganiselo. Kuba amaqamza aya kwenza umbane wolwelo ungalingani, kwaye amaqamza aya kuvelisa amandla e-electromotive abangelwayo kumhlaba wemagnethi, ngaloo ndlela kuphazamisana nesignali yokulinganisa kwaye kubangele iimpazamo ezinkulu kwiziphumo zomlinganiselo.
3. Iindawo ezisebenzisa ubushushu obuphezulu kunye noxinzelelo oluphezulu: Nangona iimitha zokuhamba ze-electromagnetic zinemodeli ezahlukeneyo kunye nezixhobo ezinokuziqhelanisa nobushushu obuthile kunye noluhlu loxinzelelo, xa ubushushu buphezulu kakhulu okanye uxinzelelo lukhulu kakhulu, lunokonakalisa izinto ezifana neesensa kunye nemigca yemitha yokuhamba, nto leyo echaphazela ukusebenza kwayo kunye nobomi benkonzo. Ngokubanzi, uluhlu lobushushu olufanelekileyo lweemitha zokuhamba ze-electromagnetic eziqhelekileyo ludla ngokuba malunga ne--20°C ukuya kwi-120°C, kwaye uluhlu loxinzelelo lumalunga ne-1.0MPa ukuya kwi-4.0MPa. Ngaphaya kolu luhlu, kufuneka iimitha zokuhamba ze-electromagnetic ezilungiselelwe ngokukodwa ubushushu obuphezulu kunye noxinzelelo oluphezulu, kodwa ezo mitha zokuhamba zibiza kakhulu.
4. Ukulinganiswa kwezinga lokuhamba kwamanzi eliphantsi: Ukuchaneka kokulinganisa kweemitha zokuhamba kwamanzi ezisebenzisa i-electromagnetic kuya kuchaphazela amazinga okuhamba kwamanzi aphantsi. Kuba kwizinga lokuhamba kwamanzi eliphantsi, amandla e-electromotive abangelwayo mancinci, nto leyo eyenza ukuba ibe sesichengeni seempawu zokuphazamiseka kwangaphandle, kwaye isisombululo semitha yokuhamba kwamanzi sinokunciphisa ukulinganiswa ngokuchanekileyo kwezinga lokuhamba kwamanzi eliphantsi. Ngokubanzi kucetyiswa ukuba izinga lokuhamba kwamanzi elisebenzisa imitha yokuhamba kwamanzi ezisebenzisa i-electromagnetic libe ngaphezulu kwe-0.3m/s ukuqinisekisa ukuchaneka kokulinganisa.
5. Indawo encinci yokufaka: Iimitha zokuhamba ze-electromagnetic zifuna ubude obuthile beenxalenye zepayipi ezithe tye ngaphambi nasemva kokuqinisekisa ukuchaneka kokulinganisa. Ngokwesiqhelo, icandelo lepayipi elithe tye elingaphezulu kufuneka libe liphindwe ka-5-10 ububanzi bombhobho, kwaye icandelo lepayipi elithe tye elisezantsi kufuneka libe liphindwe ka-3-5 ububanzi bombhobho. Ukuba indawo yokufaka incinci kwaye iimfuno zeenxalenye zepayipi ezithe tye azinakufezekiswa, kuya kukhokelela kwiipateni zokuhamba kolwelo ezingazinzanga, ngaloo ndlela zichaphazela ukuchaneka kokulinganisa. Kule meko, kunokufuneka ukhethe ezinye iimitha zokuhamba ezineemfuno eziphantsi zendawo yokufaka.
6. Iindawo zokungcangcazela ezinamandla: Kwiindawo zokungcangcazela ezinamandla, izinzwa zeemitha zokuhamba kwe-electromagnetic ziphazamiseka lula kukungcangcazela, nto leyo ebangela imiqondiso yokulinganisa engaguqukiyo kwaye ichaphazele ukuchaneka kokulinganisa. Ukongeza, ukungcangcazela okunamandla kwexesha elide kunokubangela ukuba izinto zemitha yokuhamba zikhululeke kwaye zonakale, nto leyo enciphisa ukuthembeka kwayo kunye nobomi benkonzo. Ke ngoko, kwiindawo ezineentshukumo ezinzima, ezinje ngezixhobo ezinkulu zoshishino okanye kwiindawo ezisengozini yokunyikima, kufuneka kuthathwe amanyathelo akhethekileyo okufunxa ukutshayiswa xa kusetyenziswa iimitha zokuhamba kwe-electromagnetic. Ngaphandle koko, akukhuthazwa ukuzisebenzisa.