(1) JJG99-90 da<Nauyi> suna da cikakkun ka'idoji akandaidaitawa hanyoyin daban-dabanazuzuwan na nauyi, wanda su ne tushen gacalibrating ma'aikata.
(2) Domin matakin farkonauyi, da takardar shaidar daidaitawa ya kamatanuna ingantacciyar ƙimar taro a cikin injin, ainihin maɗaukaki a cikin injin da madaidaicin ƙimar tuba.
(3) Don ma'aunin azuzuwan na biyu da ƙananan, takardar shaidar daidaitawa ya kamatanuna ƙimar gyare-gyaren taro da ainihin ƙimar adadin da aka canza.
(4) Don ma'aunin daraja, sai dai idan akwai buƙatu na musamman, haƙurin doka kawainuna na gama garidaidaitawa takardar shaida, kuma ba a ba da ƙimar gyara ba.
(5) Don ma'aunin nauyi da aka samar kafin ka'idodin JJG99-90, ana iya sarrafa ma'aunin ma'auni bisa ga ƙa'idodi masu zuwa:
a. Don ƙaƙƙarfan ma'aunin ajin farko da na biyu, har yanzu ana iya amfani da su azaman ma'aunin ajin farko da na biyu.
b. Saboda sababbin ka'idoji, matakin farko, na biyu, E1, da dai sauransu, 1 (E1), E2, da dai sauransu, 2 (E2), F1, da dai sauransu, 3 (F1) ma'aunin ajin dole ne ya zama jiki mai ƙarfi na duka kayan. Don haka, ma'aunin ma'auni na asali na biyu zuwa na huɗu tare da sarrafa sauricavities ya kamataajiF1 kuma kasa da ajiF1.
c. Sabbin ƙa'idodin kuma sun ƙayyade cewa yawan gyare-gyaren ƙimar ma'aunin nauyi bayan na farkodaidaitawa ko gyara bazai wuce 1/ na jure nauyi ba. Dangane da wannan labarin, ainihin ma'aunin na biyu zuwa na biyar tare da daidaitawaing rami za a iya shigar da su cikin sabon aji da jerin nauyin kima.
d. Misali
1kg nauyin aji na biyu tare da rami daidaitawa, juriya na taro±5mg, duba F2 da sauran jure nauyi±30mg; 4 (F2) teburin jure nauyi ajin shine±15mg. Saboda haka, ana amfani da nauyin a matsayin ma'auni mai mahimmanci kamar F2, da kumadaidaitawa sakamakon zai ba da darajar gyara; idan nauyin aiki ya kasance nauyin matakin 4 (F2), ba za a ba da ƙimar gyara ba.
Don nauyin 1kg na aji uku tare da rami daidaitawa, ana iya amfani da shi azaman ma'aunin ajin M1 da 5 (M1).
Don nauyin 1kg na aji huɗu tare da rami daidaitawa, ana iya amfani da shi azaman ma'aunin ajin M2 da 6 (M2) a cikin hanya ɗaya.
A ƙarshe, sakamakon da ke sama kuma ya shafi nauyin sauran talakawa. Asalin ma'aunin ajin na 2 zuwa na 5 (sai dai ajin na 2 mai ƙarfi) an rarraba su azaman F2, M1, M2 koaji4 (F2),aji5 (M1),aji6 (M2) daaji7 (0) ma'aunin nauyi.
Lokacin aikawa: Jul-01-2022