Emkhakheni we-metrology kanye nokulinganisa, ukukhetha izisindo ezifanele kubalulekile ukuqinisekisa ukulinganisa okunembile. Kungakhathaliseki ukuthi kusetshenziselwa ukulinganisa ibhalansi kagesi ngokunemba okuphezulu noma izinhlelo zokulinganisa zezimboni, ukukhetha isisindo esifanele akugcini nje ngokuthinta ukuthembeka kwemiphumela yokulinganisa kodwa futhi kuthinta ngqo ukusebenza kahle kanye nokugcinwa kwezindinganiso zokulinganisa. Ngakho-ke, ukuqonda amamaki ahlukene okunembile, ububanzi bawo bokusetshenziswa, kanye nendlela yokukhetha kahle izisindo ezifanele kuyisihloko esibalulekile kubo bonke onjiniyela be-metrology kanye nomqhubi wemishini.
I. Ukuhlukaniswa Kwesisindo Nezidingo Zokunemba
Izisindo zihlukaniswa ngokusekelwe ku-International Organisation of Legal Metrology (OIML) standard “OIML R111”. Ngokusho kwale standard, izisindo zihlukaniswe ngamamaki amaningi kusukela kophezulu kuya kokunemba okuphansi kakhulu. Imaki ngalinye linezimo zalo zokusetshenziswa ezithile kanye nephutha elikhulu elivunyelwe (i-MPE). Ukunemba kwamamaki ahlukene, izinhlobo zezinto ezibonakalayo, ukufaneleka kwemvelo, kanye nezindleko kuyahlukahluka kakhulu.
1. Kuchazwe Amabanga Esisindo Esiyinhloko
(1)Amabanga E1 kanye ne-E2: Izisindo Eziqondile Kakhulu
Isisindo sebanga le-E1 ne-E2 singesesigaba sokunemba okuphezulu kakhulu futhi sisetshenziswa kakhulu kuma-laboratory e-metrology kazwelonke nakwamanye amazwe. Iphutha elikhulu elivunyelwe lesisindo sebanga le-E1 livame ukuba yi-±0.5 milligrams, kuyilapho izinsimbi zebanga le-E2 zine-MPE engu-±1.6 milligrams. Lezi zinsimbi zisetshenziselwa ukudluliselwa okujwayelekile kwekhwalithi okuqinile kakhulu futhi zivame ukutholakala kuma-laboratory okubhekisela, izikhungo zocwaningo, kanye nezinqubo zokulinganisa ikhwalithi kazwelonke. Ngenxa yokunemba kwazo okukhulu, lezi zinsimbi zivame ukusetshenziselwa ukulinganisa izinsimbi zokunemba ezifana nezilinganiso zokuhlaziya kanye nezilinganiso zokubhekisela.
(2)Amabanga e-F1 kanye ne-F2: Izisindo Eziphezulu Zokunemba
Izisindo zebanga le-F1 ne-F2 zisetshenziswa kabanzi emalabhorethri anemba kakhulu kanye nasezikhungweni zokuhlola i-metrology yezomthetho. Zisetshenziswa kakhulu ekulinganiseni izilinganiso ze-elekthronikhi ezinemba kakhulu, izilinganiso zokuhlaziya, kanye namanye amadivayisi okulinganisa ngokunemba. Izisindo zebanga le-F1 zinephutha elikhulu lama-±5 milligrams, kuyilapho izisindo zebanga le-F2 zivunyelwe iphutha lama-±16 milligrams. Lezi zisindo zivame ukusetshenziswa ocwaningweni lwesayensi, ekuhlaziyweni kwamakhemikhali, kanye nasezinkambeni zokulawula ikhwalithi, lapho kudingeka khona ukunemba kokulinganisa okuphezulu kodwa hhayi okuqinile njengamamaki e-E1 ne-E2.
(3)Amabanga e-M1, M2, kanye ne-M3: Izisindo Zezimboni Nezentengiselwano
Isisindo sebanga le-M1, M2, kanye ne-M3 ngokuvamile sisetshenziswa ekukhiqizweni kwezimboni kanye nokuthengiselana kwezentengiselwano. Zifanelekela ukulinganisa izikali ezinkulu zezimboni, amabhuloho okulinganisa amaloli, izikali zepulatifomu, kanye nezikali ze-elekthronikhi zezentengiselwano. Isisindo sebanga le-M1 sinephutha elivumelekile lama-milligram angu-±50, isisindo sebanga le-M2 sinephutha lama-milligram angu-±160, kanti isisindo sebanga le-M3 sivumela iphutha lama-milligram angu-±500. Lezi sisindo se-M series zivame ukusetshenziswa ezindaweni ezivamile zezimboni nezokuthutha, lapho izidingo zokunemba ziphansi, ngokuvamile zokukala izimpahla ezinkulu kanye nezimpahla.
2. Ukukhethwa Kwezinto: Insimbi Engagqwali vs. Izisindo Zensimbi Ebunjiwe
Izinto ezisetshenziswa kulezi zisindo zithinta ngqo ukuqina kwazo, ukuzinza, kanye nokufaneleka kwazo ezisetshenziswayo ezahlukene. Izinto ezivame kakhulu zezisindo yinsimbi engagqwali kanye nensimbi ephonswe, ngayinye ifanele izidingo zokulinganisa ezahlukene kanye nezindawo ezizungezile.
(1)Izisindo Zensimbi Engagqwali:
Izisindo zensimbi engagqwali zinikeza ukumelana okuphezulu nokugqwala kanye nezakhiwo zemishini ezinhle kakhulu, zinobuso obubushelelezi okulula ukubuhlanza. Ngenxa yokufana kwazo nokuqina, izisindo zensimbi engagqwali zilungele amazinga e-E1, E2, F1, kanye ne-F2 futhi zisetshenziswa kabanzi ekulinganisweni okunembile nasezindaweni zocwaningo. Lezi zisindo zihlala isikhathi eside futhi zingagcina ukunemba kwazo isikhathi eside ezindaweni ezilawulwayo.
(2)Izisindo Zensimbi Ebunjiwe:
Izisindo zensimbi ephothiwe zivame ukusetshenziswa kumagreyidi e-M1, M2, kanye ne-M3 futhi zivame ukulinganiswa kwezimboni kanye nokuthengiselana kwezentengiselwano. Ukusebenza kahle kwezindleko kanye nobuningi obukhulu bensimbi ephothiwe kwenza kube yinto efanelekile yezisindo ezinkulu ezisetshenziswa kumabhulorho okulinganisa amaloli kanye nemishini yokulinganisa yezimboni. Kodwa-ke, izisindo zensimbi ephothiwe zivame ukuba nobuso obuqinile, obuthambekele ekungcoleni nasekungcoleni, ngakho-ke zidinga ukulungiswa njalo nokuhlanzwa.
II.Indlela Yokukhetha Ibanga Lesisindo Esifanele
Uma ukhetha isisindo esifanele, udinga ukucabangela isimo sesicelo, izidingo zokunemba zemishini, kanye nezimo ezithile zendawo yokulinganisa. Nazi ezinye izincomo zezinhlelo zokusebenza ezivamile:
1. AmaLabhoratri Asezingeni Eliphezulu Kakhulu:
Uma uhlelo lwakho lokusebenza luhilela ukudluliselwa kwesisindo okunembe kakhulu, cabanga ngokusebenzisa izisindo zebanga le-E1 noma le-E2. Lokhu kubalulekile ekulinganisweni kwekhwalithi ejwayelekile kazwelonke kanye nezinsimbi zesayensi ezinembile kakhulu.
2. Izilinganiso Ze-elekthronikhi Ezinembile Kakhulu kanye Nezilinganiso Zokuhlaziya:
Izisindo zezinga le-F1 noma le-F2 zizokwanela ukulinganisa amadivayisi anjalo, ikakhulukazi emikhakheni efana nekhemistri kanye nemithi lapho kudingeka khona ukunemba okuphezulu.
3. Izilinganiso Zezimboni Nezilinganiso Zezentengiselwano:
Ezikalini zezimboni, amabhuloho okulinganisa amaloli, kanye nezikali ezinkulu ze-elekthronikhi, isisindo se-M1, M2, noma se-M3 silungele kakhulu. Lezi zisindo zenzelwe ukulinganisa okuvamile kwezimboni, ngamaphutha amakhulu avumelekile.
III.Ukugcinwa Kwesisindo Nokulinganiswa
Ngisho noma kunezisindo ezinembile kakhulu, ukusetshenziswa kwesikhathi eside, izinguquko zemvelo, kanye nokuphathwa okungafanele kungaholela ekungahambelani kokunemba. Ngakho-ke, ukulinganisa nokulungisa njalo kubalulekile:
1. Ukulungiswa Kwansuku Zonke:
Gwema ukuthintana ngqo nezisindo ukuze uvimbele amafutha nezinto ezingcolisayo ukuthi zingathinti ubuso bazo. Kunconywa ukusebenzisa indwangu ekhethekile ukuze usule izisindo ngobumnene bese uzigcina endaweni eyomile, engenalo uthuli ukuze uvimbele umswakama nothuli ekushintsheni ukunemba kwazo.
2. Ukulinganisa Okuvamile:
Ukulinganisa njalo kubalulekile ekugcineni ukunemba kwezisindo. Izisindo ezinembe kakhulu ngokuvamile zidinga ukulinganiswa minyaka yonke, kuyilapho izisindo zochungechunge lwe-M ezisetshenziselwa ukulinganisa kwezimboni kufanele nazo zilinganiswe minyaka yonke noma kabili ngonyaka ukuqinisekisa ukuthi zihlangabezana nezindinganiso zokunemba.
3. Izikhungo Zokulinganisa Eziqinisekisiwe:
Kubalulekile ukukhetha isevisi yokulinganisa eqinisekisiwe enesitifiketi se-ISO/IEC 17025, esiqinisekisa ukuthi imiphumela yokulinganisa iyalandelelwa emhlabeni jikelele. Ngaphezu kwalokho, ukusungula amarekhodi okulinganisa kungasiza ekulandeleleni izinguquko ekuqondeni kwesisindo nokunciphisa izingozi zokulinganisa.
Isiphetho
Izisindo ziyithuluzi elibalulekile ekulinganiseni nasekulinganiseni, futhi amamaki azo okunemba, izinto zokwakha, kanye nobubanzi bokusetshenziswa bunquma ukusebenza kwazo emikhakheni ehlukene. Ngokukhetha isisindo esifanele ngokusekelwe ezidingweni zakho zohlelo lokusebenza nokulandela imikhuba efanele yokugcinwa nokulinganisa, ungaqinisekisa ukunemba nokuthembeka kwenqubo yokulinganisa. Kusukela ku-E1, E2 kuya ku-M series weights, ibanga ngalinye linesimo salo sokusetshenziswa esithile. Lapho ukhetha isisindo, kufanele ucabangele ngokuphelele izidingo zokunemba, izinhlobo zemishini, kanye nezici zemvelo ukuqinisekisa imiphumela yokulinganisa ezinzile esikhathini eside.
Isikhathi sokuthunyelwe: Novemba-26-2025