Amamitha okugeleza kagesi (amamitha e-EM) asetshenziswa kabanzi ezindleleni zokwelashwa kwezimboni, komasipala, namanzi ngenxa yokunemba kwawo okuphezulu, ikhono lokuphatha uketshezi oluqhubayo, kanye nokwehla okuncane kwengcindezi. Kodwa-ke, ukusebenza kwawo kuncike kakhulu ekufakweni okufanele—ngisho nemitha ye-EM ethuthuke kakhulu izohluleka ukuletha idatha ethembekile uma ifakwe ngokungalungile. Kusukela ezimweni zamapayipi kuya ezicini zemvelo, izinto eziningana ezibalulekile kumele zibhekwe ukuqinisekisa ukusebenza kahle. Lesi sihloko sichaza izinto ezibalulekile zokufaka amamitha e-EM ezinhlelweni zamapayipi.
1. Izidingo Zobude Obuqondile Bepayipi
Ukuxokozela epayipini kungenye yezinsongo ezinkulu ekuqondeni kwemitha ye-EM. Uma uketshezi lugeleza ngezindololwane, ama-valve, ama-reducer, noma amaphampu, kudala ama-swirls, ama-eddies, noma amaphrofayili ejubane angalingani aphazamisa insimu ye-electromagnetic esetshenziswa yimitha ukukala ukugeleza. Ukuze kuncishiswe lokhu, ukunamathela ngokuqinile eziqondisweni zobude bepayipi eliqondile elisezansi naphezulu kubalulekile.
Iningi labakhiqizi lincoma okungenani ububanzi bepayipi (5D) obuphindwe kahlanu kunepayipi eliqondile elingenhla kwemitha ye-EM kanye nobubanzi bepayipi (3D) obuphindwe kathathu kunepayipi elingezansi. Isibonelo, uma ufaka imitha epayipini elingamasentimitha angu-4 (100mm), kufanele kube okungenani amasentimitha angu-500 (500mm) epayipi eliqondile ngaphambi kwemitha kanye namasentimitha angu-300 (300mm) ngemva kwalokho. Ezimweni lapho isikhala silinganiselwe (isb., amakamelo aqinile emishini), ukufaka ama-flow conditioner (njengeziqondisi noma amapuleti anezimbobo) kunganciphisa ubude obuqondile obudingekayo ngokuzinzisa iphrofayili yokugeleza. Gwema ukufaka imitha ngokushesha ngemva kwamaphampu noma ama-valve okulawula, njengoba lezi zingxenye zikhiqiza ukuphazamiseka okukhulu.
2. Usayizi Wepayipi Nokuhambisana Kwamamitha
Ubukhulu bamapayipi namamitha obungalingani buholela ekufundweni okunganembile kanye nokulahlekelwa okukhulu kwengcindezi. Amamitha e-EM aklanyelwe ukufanisa ububanzi bamapayipi athile (usayizi ojwayelekile), futhi ukukhetha usayizi ongalungile kunciphisa ukusebenza kwawo.
- Unganciphisi usayizi wemitha: Imitha encane idala indlela encane yokugeleza, okwandisa ijubane loketshezi kanye nokwehla kwengcindezi. Lokhu kungalimaza ulwelwesi lwemitha ngokuhamba kwesikhathi futhi kubangele ukufundwa kokugeleza okuphezulu okungamanga.
- Ungalikhulisi kakhulu imitha: Imitha enkulu kakhulu ibangela ijubane eliphansi loketshezi, ikakhulukazi uma kugeleza kancane. Njengoba amamitha e-EM ethembele ejubaneni elihambisanayo ukuze akhiqize isignali kagesi elinganisekayo, ijubane eliphansi lingaholela ekufundweni okungazinzile noma ukwehluleka ukubona ukugeleza ngokuphelele.
Uma usayizi wephayiphi ungahambisani nosayizi ojwayelekile wemitha ye-EM (isb., iphayiphi engamasentimitha angu-5 engenamitha efanayo), sebenzisa izinciphisi noma izikhulisi ezifakwe okungenani i-10D phezulu kwemitha ukuze zishintshe phakathi kosayizi. Qinisekisa ukuthi izinciphisi zigxile (hhayi ezingavamile) ukuze ugweme ukudala ukusatshalaliswa kokugeleza okungalingani.
3. Ukugcwaliswa Koketshezi Nokuqondiswa Kokufakwa
Amamitha e-EM adinga ukuthi ipayipi ligcwaliswe ngokuphelele ngoketshezi ngesikhathi sokusebenza—izikhala zomoya noma zegesi ziphazamisa insimu kagesi futhi zibangele ukufundwa okungaguquki. Ukuqondiswa kokufakwa kudlala indima ebalulekile ekuvimbeleni ukuqongelela komoya:
- Ukufakwa okuvundlile: Indlela ekhethwayo yokusetshenziswa okuningi. Faka imitha ukuze ama-electrode ayo abekwe ku-45° kuya ku-90° ukusuka phansi kwepayipi (hhayi ngqo phansi). Lokhu kugwema ukuthintana kwe-electrode nenhlabathi noma udoti ohlala phansi kwepayipi, okungabangela ukungcola. Kuvimbela futhi amaphakethe omoya ukuthi angaqoqeki eduze kwama-electrode (umoya uvame ukukhuphukela phezulu kwamapayipi avundlile).
- Ukufakwa okuqondile: Kufanelekela ukusetshenziswa okunokuhamba koketshezi okuya phezulu (hhayi phansi, njengoba lokhu kungabamba umoya emitha). Ukufakwa okuqondile kuqinisekisa ukuthi ipayipi lihlala ligcwele futhi kusiza ukuvimbela ukwakheka kwenhlabathi. Kodwa-ke, qinisekisa ukuthi imitha ilinganiswe ngokufaka okuqondile—amanye amamodeli anemikhawulo yesisindo noma indlela yokugeleza.
- Gwema ukufakwa eziqongweni zamapayipi: Ukufaka imitha endaweni ephakeme kakhulu yepayipi kwandisa ingozi yamaphakethe omoya. Uma kungenakugwenywa, engeza imigodi yomoya phezulu kwemitha ukuze ukhiphe igesi evalelekile.
4. Ukuhambisana kwezinto kanye nokuvikelwa kwemvelo
Izingxenye ezimanzi zemitha ye-EM (ungqimba lwamashubhu okulinganisa, ama-electrode) kanye nendlu yangaphandle kumele kuhambisane noketshezi nendawo ezungezile ukuqinisekisa ukuthi ihlala isikhathi eside futhi iphephile.
- Izingxenye ezimanzi: Ukuze uthole uketshezi olubolayo (isb., amanzi angcolile ane-acidic, izixazululo zamakhemikhali), sebenzisa izinhlaka ezifana ne-PTFE (Teflon) noma i-FKM (Viton) kanye nama-electrode enziwe nge-Hastelloy C noma i-titanium. Ukuze uthole uketshezi oluthambile (isb., udaka olunezinhlayiya eziqinile), khetha izinhlaka eziqinisiwe (i-polyurethane) ukuze zimelane nokuguguleka. Ukuze uthole amanzi aphuzwayo, qiniseka ukuthi izinto zihlangabezana nezindinganiso ze-NSF/ANSI 61 noma ze-WRAS ukuze ugweme ukungcola.
- Izindlu zangaphandle: Ezindaweni ezinzima (isb., ukufakwa kwangaphandle, izikhungo zezimboni ezinothuli noma umswakama), khetha amamitha anesilinganiso se-IP (Ingress Protection) okungenani i-IP65 (esingenalo uthuli futhi sivikelwe kumajethi amanzi angaphansi komfutho). Ngezinhlelo zokusebenza ezicwiliswa emanzini (isb., amapayipi angaphansi kwamanzi), sebenzisa amamitha anesilinganiso se-IP68. Ezindaweni eziqhumayo (isb., izindawo zokuhlanza uwoyela), khetha amamitha anezitifiketi ze-ATEX noma ze-IECEx zezindawo eziyingozi.
5. Ukuvimbela Ukumisa Umhlaba Kagesi Nokuphazamiseka
Amamitha e-EM ayazwela ekuphazamisekeni kukagesi, okungaphazamisa isignali futhi kunciphise ukunemba. Ukubeka phansi okufanele kubalulekile ukuvikela imitha emsindweni kagesi wangaphandle:
- Ukufakwa kwemitha phansi: Xhuma i-terminal yokumisa imitha phansi emhlabathini ozinikele, ophansi ukumelana (≤10Ω). Ungabelani umhlabathi neminye imishini (isb., ama-motor, amaphampu), njengoba lokhu kungaletha umsindo. Kumapayipi epulasitiki (angenawo ugesi), faka indandatho yomhlabathi (indandatho yensimbi enamathiselwe epayipini elingenhla nelingezansi kwemitha) bese uyixhumanisa nomhlabathi wemitha. Lokhu kuqinisekisa ukuthi uketshezi lusezingeni elifanayo lomhlabathi njengemitha.
- Ukuphathwa kwekhebula: Sebenzisa izintambo ezivikelwe ukuze udlulise amandla kanye nesignali (isb., izintambo ze-analog ezingu-4-20mA, izintambo zedijithali ze-RS485). Dlulisa izintambo kude nemigqa ye-voltage ephezulu (isb., izintambo zamandla ezingu-380V) kanye nemithombo ye-electromagnetic (isb., ama-variable frequency drive, ama-motor) ukuze ugweme ukuphazamiseka. Gcina ibanga elincane lemitha eli-1 phakathi kwezintambo ze-EM meter kanye nezintambo ezinomsindo omkhulu.
6. Ukufinyeleleka Kokulungiswa Nokulinganiswa
Amamitha e-EM adinga ukulungiswa njalo (isib. ukuhlanzwa kwe-electrode, ukulinganiswa) ukuze kulondolozwe ukunemba. Ukufaka imitha endaweni engafinyeleleki (isib., izikhala eziqinile zokukhasa, uphahla oluphezulu) kwandisa isikhathi sokulungisa kanye nezindleko.
- Nikeza ukufinyelela okucacile: Qinisekisa ukuthi kukhona okungenani imitha elilodwa lesikhala esizungeze imitha ukuze ochwepheshe basebenze. Uma imitha ifakiwe endaweni ephakeme, sebenzisa amapulatifomu noma amaladi (anezici zokuphepha) ukuze ungene.
- Ukubekwa kwevalvu: Faka amavalvu okuzihlukanisa phezulu nangezansi kwemitha. Lawa mavalvu avumela ochwepheshe ukuthi bavale ukugeleza koketshezi ukuze kulungiswe noma kushintshwe ngaphandle kokumisa lonke uhlelo lwepayipi. Sebenzisa amavalvu agcwele imbobo ukuze ugweme ukuvimbela ukugeleza lapho evuliwe.
- Izinto okufanele uzicabangele ngokulinganisa: Khetha indawo evumela ukuxhumana okulula nemishini yokulinganisa (isb., amazinga okugeleza aphathekayo). Kumapayipi amakhulu, qiniseka ukuthi kukhona isikhala sokufakwa kwamathuluzi okulinganisa okwesikhashana.
Isiphetho
Ukufakwa kahle kwamamitha okugeleza kagesi kuyisinyathelo esibalulekile ekuqinisekiseni ukulinganiswa kokugeleza okunembile nokuthembekile ezinhlelweni zamapayipi. Ngokubhekana nobude obuqondile bepayipi, ukuhambisana kosayizi, ukugcwaliswa koketshezi, ukukhethwa kwezinto, ukusekelwa, kanye nokufinyeleleka, abaqhubi bangakhulisa ukusebenza kwemitha kanye nesikhathi sokuphila kwayo. Ukunganaki lezi zinto akugcini nje ngokuholela kudatha enganembile (engaphazamisa ukulawulwa kwenqubo noma ukuhambisana nomthetho) kodwa futhi kwandisa izindleko zokulungisa kanye nesikhathi sokungasebenzi. Ukuzinika isikhathi sokuhlela nokwenza ukufakwa ngendlela efanele kuqinisekisa ukuthi amamitha e-EM aletha ukunemba nokuqina okudingekayo kwezicelo ezahlukahlukene zezimboni nezomasipala.
Isikhathi sokuthunyelwe: Okthoba-11-2025