Iitransmitter zoxinzelelo zizixhobo ezibalulekileyo ezisetyenziswa rhoqo ekulinganiseni, esweni nasekulawuleni umahluko woxinzelelo kwiigesi, ulwelo kunye nolwelo. Zingadlala indima ebalulekileyo ekuqinisekiseni ukhuseleko, ukusebenza kakuhle, kunye nokuthembeka kweenkqubo kumacandelo amaninzi emizi-mveliso. Ukuqonda ukuba yintoni imveliso yetransmitter yoxinzelelo kuyimfuneko kwiingcali kunye nabaqhubi abaxhomekeke kufundo oluchanekileyo loxinzelelo emsebenzini wabo.
Isixhobo sokudlulisa uxinzelelo sidla ngokuguqula isignali efunyenwe kwi-sensor yoxinzelelo edibeneyo ibe sisignali yombane enkulu, emva koko idluliselwa kwinkqubo yolawulo (PLC/DCS) ukuze ibekwe esweni kwaye ilawulwe ngexesha langempela. Ngokukodwa, iintlobo eziqhelekileyo zokuphuma kwesignali zezi zilandelayo:
Iziphumo zangoku:Uhlobo oluphambili lwemveliso oluqhelekileyo sisignali yangoku, ngesiqhelo ngohlobo lwe-4-20 mA current loop. Imveliso inobudlelwane obuthe ngqo nexabiso loxinzelelo olunyuka ngokulinganayo ngokufundwa koxinzelelo. Umzekelo, uluhlu lokulinganisa lwe-(0~10)bar lunokumisela inqaku elingu-zero njenge-4mA ngelixa uxinzelelo lwe-10bar luhambelana ne-20mA olwenza igrafu ethe ngqo kwisithuba. Olu luhlu luvumela ukutolikwa okulula kwexabiso loxinzelelo kwaye lusetyenziswa kakhulu kwizicelo zoshishino ngenxa yokuqina kwalo kwingxolo yombane.
Iziphumo zeDijithali: Iitransmitter zoxinzelelo ezikrelekrele zinokubonelela ngemveliso yedijithali kwiindlela zonxibelelwano olukrelekrele ezifana ne-HART, i-Modbus-RTU okanye ezinye iiprotokholi. Iziphumo zedijithali zizisa iingenelo ezinje ngokuchaneka okuphezulu, ukuguqulwa kunye nokuxilongwa kwindawo, ulwazi olongezelelweyo oludluliselwe kwi-PLS/DCS, kunye nokunciphisa ukuthambekela kwingxolo. Ezi mveliso zedijithali ezikrelekrele ziya zithandwa ngakumbi kwiinkqubo zanamhlanje zokuzenzekelayo.
Isiphumo seVoltage:Ezinye iitransmitter zoxinzelelo zinokubonelela nge-voltage output, ngesiqhelo kwisithuba se-0-5V okanye i-0-10V. Uhlobo lwe-voltage output aluxhaphakanga kakhulu kune-current loop kodwa lunokuba luncedo ngakumbi kwizicelo apho imiqondiso ye-voltage ikhethwayo kwiinkqubo zolawulo.
Isiphumo seFrequency:Isiphumo sefrikhwensi sibhekisa ekuguquleni ukufundwa koxinzelelo lube sisignali yefrikhwensi. Nangona isignali yefrikhwensi ingasetyenziswa rhoqo kwiitransmitter zoxinzelelo ngenxa yeendleko eziphezulu kunye nobunzima bobuchwephesha, inokuba luncedo kakhulu kwizicelo ezithile apho kufuneka khona ukudluliselwa kwedatha ngesantya esiphezulu.
Emva kokukhetha isignali efanelekileyo yokuphuma, kufuneka kuqwalaselwe nezinye izinto ezinokuchaphazela isiphumo ngokusebenzayo:
Ukulinganisa:Ukulinganiswa okufanelekileyo kuyimfuneko ukuze kufunyanwe ukufundwa koxinzelelo ngokuchanekileyo. Ukulinganiswa kwefektri kufuneka kwenziwe ukuqinisekisa ukuba imveliso ihambelana noxinzelelo lokulinganisa ngendlela efanelekileyo ngokuthelekisa imveliso yomthumeli nomgangatho woxinzelelo owaziwayo kwaye uyilungise xa kuyimfuneko.
Iziphumo zobushushu:Ubushushu bunokuba nefuthe ekuchanekeni kokuphuma. Ukulungiswa kobushushu bomzi-mveliso kunokunceda ukulungisa isiphumo sobushushu esingafunekiyo kwindawo, kodwa ubushushu obugqithisileyo busenokuchaphazela ukusebenza komthumeli. Kubalulekile ukukhetha umthumeli olinganiswe kuluhlu oluthile lobushushu bokusebenza.
Ukungcangcazela kunye nokothuka:Ukungcangcazela kunye nokwethuka kwenzeka kwiindawo ezithile phakathi kweendawo zoshishino okunokubangela ukufundwa okungazinzanga kunye nomonakalo kwisixhobo. Kubalulekile ukukhetha uyilo lwesakhiwo oluqinileyo olumelana nokungcangcazela kunye nokusebenzisa amanyathelo afunekayo okunciphisa ukungcangcazela ukukhusela ukuthembeka kwesixhobo.
Iipropati Eziphakathi:Uhlobo lwesixhobo sokulinganisa lunokuchaphazela nemveliso. Izinto ezifana ne-viscosity, ukugqwala, ziyahluka ngokweemeko zezinto kunye nokuba khona kwamasuntswana axhonyiweyo kunokukhokelela ekufundeni uxinzelelo oluphambukileyo. Ukukhetha uhlobo oluchanekileyo lwesidluliseli oluhambelana neempawu ezithile zolwelo oluthile lokulinganisa kubalulekile ekusebenzeni kakuhle kwesixhobo.
Iindlela zokukhupha isignali kwisixhobo sokudlulisa uxinzelelo zibaluleke kakhulu ekusebenzeni kwaso. Njengomvelisi wezixhobo onamava kwicandelo lolawulo lweenkqubo kangangeminyaka engaphezu kwama-20,Shanghai WangyuanIbonelela ngezixhobo zokulinganisa eziqinisekisiweyo nezithembekileyo kunye namava amaninzi kuzo zonke iintlobo zeempawu zokukhupha ukusuka kwi-4 ~ 20mA eqhelekileyo kunye nonxibelelwano olukrelekrele ukuya kwimveliso eyenzelwe wena. Ukuba unemibuzo okanye imfuneko malunga neziphumo zokuhambisa ungathandabuzi ukuqhagamshelana nathi.
Ixesha leposi: Disemba-12-2024