Kwicandelo le-metrology kunye nokulinganisa, ukukhetha ubunzima obufanelekileyo kubalulekile ukuqinisekisa ukulinganisa okuchanekileyo. Nokuba kusetyenziselwa ukulinganisa ibhalansi ye-elektroniki ngokuchanekileyo okanye ukulinganisa kwemizi-mveliso, ukukhetha ubunzima obufanelekileyo akupheleli nje ekuchaphazeleni ukuthembeka kweziphumo zokulinganisa kodwa kukwachaphazela ngokuthe ngqo ukusebenza kakuhle kunye nokugcinwa kwemigangatho yokulinganisa. Ke ngoko, ukuqonda amanqanaba ahlukeneyo okuchaneka, uluhlu lwazo lokusetyenziswa, kunye nendlela yokukhetha ngokuchanekileyo ubunzima obufanelekileyo sisihloko esibalulekileyo kuyo yonke injineli ye-metrology kunye nomqhubi wezixhobo.
I. Uhlu loBunzima kunye neeMfuno zokuQonda
Ubunzima buhlulwe ngokusekwe kumgangatho we-International Organisation of Legal Metrology (OIML) "OIML R111". Ngokwalo mgangatho, ubunzima buhlulwe ngokwamanqanaba amaninzi ukusuka kwelona liphezulu ukuya kwelona liphantsi. Umgangatho ngamnye uneemeko ezithile zokusetyenziswa kunye nempazamo ephezulu evumelekileyo (MPE). Ukuchaneka kwamanqanaba ahlukeneyo, iintlobo zezinto, ukufaneleka kokusingqongileyo, kunye neendleko zahlukile kakhulu.
1. Ichaziwe iiBanga zoBunzima obuPhambili
(1)Amabanga e-E1 kunye ne-E2: Ubunzima obuPhezulu kakhulu bokuchaneka
Ubunzima bebanga le-E1 kunye ne-E2 bukwicandelo lokuchaneka okuphezulu kakhulu kwaye busetyenziswa kakhulu kwiilebhu zemetrology zelizwe nezamazwe ngamazwe. Impazamo ephezulu evumelekileyo yobunzima bebanga le-E1 idla ngokuba yi-±0.5 milligrams, ngelixa ubunzima bebanga le-E2 bune-MPE ye-±1.6 milligrams. Ezi bunzima zisetyenziselwa ukuhanjiswa okusemgangathweni okungqongqo kwaye zihlala zifumaneka kwiilebhu zokubhekisa, amaziko ophando, kunye neenkqubo zokulinganisa umgangatho wesizwe. Ngenxa yokuchaneka kwazo okugqithisileyo, ezi bunzima zihlala zisetyenziselwa ukulinganisa izixhobo zokuchaneka ezifana neebhalansi zohlalutyo kunye neebhalansi zokubhekisa.
(2)Amanqanaba e-F1 kunye ne-F2: Ubunzima obuPhezulu obuchanekileyo
Ubunzima bebanga le-F1 kunye ne-F2 busetyenziswa kakhulu kwiilabhoratri ezichanekileyo kakhulu kunye namaziko ovavanyo lwe-metrology yezomthetho. Zisetyenziswa kakhulu ekulinganiseni iibhalansi ze-elektroniki ezichanekileyo kakhulu, iibhalansi zohlalutyo, kunye nezinye izixhobo zokulinganisa ngokuchanekileyo. Ubunzima bebanga le-F1 bunempazamo ephezulu ye-±5 milligrams, ngelixa ubunzima bebanga le-F2 buvunyelwe ukuba bube yimpazamo ye-±16 milligrams. Ezi bunzima zihlala zisetyenziswa kuphando lwesayensi, uhlalutyo lweekhemikhali, kunye namacandelo olawulo lomgangatho, apho kufuneka ukuchaneka okuphezulu kokulinganisa kodwa kungabi nzima njenge-E1 kunye ne-E2 grades.
(3)Amanqanaba eM1, M2, kunye neM3: Ubunzima beMizi-mveliso kunye noRhwebo
Ubunzima be-M1, M2, kunye ne-M3 buqhele ukusetyenziswa kwimveliso yemizi-mveliso kunye neentengiselwano zorhwebo. Zifanelekile ukulinganisa izikali ezinkulu zoshishino, iibhulorho zokulinganisa iilori, izikali zeqonga, kunye nezikali ze-elektroniki zorhwebo. Ubunzima be-M1 grade bunempazamo evumelekileyo ye-±50 milligrams, ubunzima be-M2 grade bunempazamo ye-±160 milligrams, kwaye ubunzima be-M3 grade buvumela impazamo ye-±500 milligrams. Ezi zikali ze-M series ziqhele ukusetyenziswa kwiindawo eziqhelekileyo zoshishino kunye nezothutho, apho iimfuno zokuchaneka ziphantsi, zihlala zilinganisa iimpahla kunye neempahla ezininzi.
2. Ukukhethwa kwezinto: Intsimbi Engagqwaliyo vs. Ubunzima bentsimbi ephosweyo
Izinto ezisetyenziswa kwezi zixhobo zichaphazela ngokuthe ngqo ukuqina kwazo, ukuzinza kwazo, kunye nokufaneleka kwazo kwiindlela ezahlukeneyo zokusetyenziswa. Ezona zinto zixhaphakileyo zokusetyenziswa kwezi zixhobo yintsimbi engatyiwayo kunye nentsimbi ephoswe ngesinyithi, nganye ifanelekile kwiimfuno ezahlukeneyo zokulinganisa kunye neendawo ezingqongileyo.
(1)Ubunzima bentsimbi engagqwaliyo:
Izisindo zentsimbi engagqwaliyo zibonelela ngokumelana okuphezulu nokugqwala kunye neempawu zoomatshini eziphezulu, kunye nomphezulu ogudileyo okulula ukuwucoca. Ngenxa yokufana kwazo nokuzinza, izisindo zentsimbi engagqwaliyo zilungele iiklasi ze-E1, E2, F1, kunye ne-F2 kwaye zisetyenziswa kakhulu kwiimilinganiselo ezichanekileyo kunye neendawo zophando. Ezi zisindo zihlala ixesha elide kwaye zinokugcina ukuchaneka kwazo ixesha elide kwiindawo ezilawulwayo.
(2)Ubunzima bentsimbi eyenziwe ngentsimbi:
Ubunzima bentsimbi ephothiweyo budla ngokusetyenziswa kwiigreyidi ze-M1, M2, kunye ne-M3 kwaye buqhelekile ekulinganisweni kwemizi-mveliso nakwiintengiselwano zorhwebo. Ukusebenza kakuhle kweendleko kunye noxinano oluphezulu lwentsimbi ephothiweyo kwenza ukuba ibe yinto efanelekileyo kwiintsimbi ezinkulu ezisetyenziswa kwiibhulorho zokulinganisa iilori kunye nezixhobo zokulinganisa imizi-mveliso. Nangona kunjalo, ubunzima bentsimbi ephothiweyo budla ngokuba nomphezulu orhabaxa, othanda ukungcoliswa kunye nokungcola, kwaye ke ngoko kufuneka ulondolozo kunye nokucocwa rhoqo.
II.Indlela yokukhetha iBanga lobunzima obufanelekileyo
Xa ukhetha ubunzima obufanelekileyo, kufuneka uqwalasele imeko yesicelo, iimfuno zokuchaneka kwezixhobo, kunye neemeko ezithile zendawo yokulinganisa. Nazi ezinye iingcebiso zezicelo eziqhelekileyo:
1. Iilebhu eziBalaseleyo eziBalaseleyo:
Ukuba isicelo sakho siquka ukuhanjiswa kobunzima obuchanekileyo kakhulu, cinga ngokusebenzisa ubunzima bebanga le-E1 okanye le-E2. Ezi zibalulekile kwiindlela zokulinganisa umgangatho wesizwe kunye nezixhobo zesayensi ezichanekileyo.
2. Iibhalansi ze-elektroniki ezichanekileyo kakhulu kunye neebhalansi zohlalutyo:
Ubunzima bezinga le-F1 okanye le-F2 buya kwanela ukulinganisa ezi zixhobo, ingakumbi kwiinkalo ezifana nekhemistri kunye namayeza apho kufuneka khona ukuchaneka okuphezulu.
3. Imilinganiselo yoShishino kunye nezikali zorhwebo:
Kwiikali zemizi-mveliso, iibhulorho zokulinganisa iilori, kunye nezikali ezinkulu ze-elektroniki, ubunzima be-M1, M2, okanye i-M3 grade bufanelekile ngakumbi. Ezi zikali zenzelwe ukulinganisa rhoqo kwemizi-mveliso, kunye neempazamo ezinkulu kancinci ezivumelekileyo.
III.Ukugcinwa kobunzima kunye nokulinganisa
Nokuba kukho ubunzima obuphezulu, ukusetyenziswa kwexesha elide, utshintsho kwindalo, kunye nokuphathwa ngendlela engafanelekanga kunokukhokelela ekungangqinelani kokuchaneka. Ke ngoko, ukulinganisa rhoqo kunye nokugcinwa kubalulekile:
1. Ukugcinwa Kwemihla ngemihla:
Kuphephe ukudibana ngqo neentsimbi zobunzima ukuze uthintele ukuba iioyile kunye nezinto ezingcolisayo zingachaphazeleki kumphezulu wazo. Kucetyiswa ukuba usebenzise ilaphu elikhethekileyo ukuze usule ngobunono iintsimbi zobunzima uze uzigcine kwindawo eyomileyo, engenaluthuli ukuze uthintele ukufuma kunye nothuli ekutshintsheni ukuchaneka kwazo.
2. Uhlengahlengiso oluQhelekileyo:
Ukulinganiswa rhoqo kubalulekile ekugcineni ukuchaneka kobunzima. Ubunzima obuchanekileyo budla ngokufuna ukulinganiswa minyaka le, ngelixa ubunzima bochungechunge lwe-M obusetyenziselwa ukulinganisa imboni bufanele bulinganiswe minyaka le okanye isiqingatha sonyaka ukuqinisekisa ukuba buhlangabezana nemigangatho yokuchaneka.
3. Amaziko Okulinganisa Aqinisekisiweyo:
Kubalulekile ukukhetha inkonzo yokulinganisa eqinisekisiweyo enesiqinisekiso se-ISO/IEC 17025, eqinisekisa ukuba iziphumo zokulinganisa ziyalandeleka kwihlabathi liphela. Ukongeza, ukumisela iirekhodi zokulinganisa kunokunceda ukulandelela utshintsho ekuchanekeni kobunzima kunye nokunciphisa umngcipheko wokulinganisa.
Isiphelo
Ubunzima zizixhobo ezibalulekileyo ekulinganiseni nasekulinganiseni, kwaye amanqanaba abo okuchaneka, izixhobo, kunye noluhlu lwezicelo zilawula ukusebenza kwazo kwiindawo ezahlukeneyo. Ngokukhetha ubunzima obufanelekileyo ngokusekelwe kwiimfuno zakho zesicelo kunye nokulandela iindlela ezifanelekileyo zokugcinwa kunye nokulinganisa, unokuqinisekisa ukuchaneka kunye nokuthembeka kwenkqubo yokulinganisa. Ukusuka kubunzima bochungechunge lwe-E1, E2 ukuya kwi-M, isigaba ngasinye sinesimo saso sokusetyenziswa. Xa ukhetha ubunzima, kufuneka uqwalasele ngokupheleleyo iimfuno zokuchaneka, iintlobo zezixhobo, kunye nezinto ezingqongileyo ukuqinisekisa iziphumo zokulinganisa ezizinzileyo kwixesha elide.
Ixesha leposi: Novemba-26-2025