(1) JJG99-90 thiab<Qhov hnyav> muaj cov lus qhia ntxaws txog covcalibration txoj kev ntawm ntau yamchav kawm ntawm qhov hnyav, uas yog lub hauv paus rau lubcalibrating cov neeg ua haujlwm.
(2) Rau thawj chav kawmhnyav, daim ntawv pov thawj calibration yuav tsumqhia qhov kho tus nqi ntawm huab hwm coj hauv lub tshuab nqus tsev, qhov tseeb loj hauv lub tshuab nqus tsev thiab qhov kho tus nqi ntawm qhov hloov pauv loj.
(3) Rau qhov hnyav ntawm cov chav kawm thib ob thiab qis dua, daim ntawv pov thawj calibration yuav tsumqhia qhov loj kho tus nqi thiab qhov tseeb huab hwm coj tus nqi ntawm qhov hloov pauv loj.
(4) Rau qib ntsuas qhov hnyav, tshwj tsis yog tias muaj cov cai tshwj xeeb, tsuas yog kev zam txim raug caiqhia ntawm generalcalibration daim ntawv pov thawj, thiab tsis muaj kev kho qhov tseem ceeb.
(5) Rau qhov hnyav ua ntej JJG99-90 cov kev cai, tus qauv hnyav tuaj yeem ua raws li cov cai hauv qab no:
a. Rau cov khoom hnyav thawj chav kawm thiab chav kawm thib ob, lawv tseem tuaj yeem siv ua qhov hnyav thib ib thiab thib ob.
b. Raws li cov kev cai tshiab, thawj chav kawm, chav kawm thib ob, E1, thiab lwm yam, 1 (E1), E2, thiab lwm yam., 2 (E2), F1, thiab lwm yam., 3 (F1) chav kawm hnyav yuav tsum yog lub cev muaj zog. ntawm tag nrho cov khoom. Yog li ntawd, thawj qhov thib ob- rau plaub-chav kawm ntawv hnyav nrog kev tswj ceevkab noj hniav yuav tsum yogchav kawmF1 thiab hauv qab no tus chav kawmF1.
c. Cov kev cai tshiab kuj tau teev tseg tias qhov kev kho loj ntawm qib qhov hnyav tom qab thawj zaugcalibration los yog kho yuav tsum tsis txhob ntau tshaj 1/ ntawm qhov hnyav kam rau ua. Raws li tsab xov xwm no, thawj qib thib ob mus rau qib tsib qhov hnyav nrog kev khohauv kab noj hniav tuaj yeem muab tso rau hauv chav kawm tshiab thiab qib hnyav series.
d. Piv txwv
1kg qhov hnyav thib ob hauv chav kawm nrog kev hloov kho kab noj hniav, huab hwm coj kam rau ua±5mg, kos F2 thiab lwm yam hnyav hnyav±30 mg; 4 (F2) chav kawm qhov hnyav siab lub rooj yog±15mg ib. Yog li ntawd, qhov hnyav yog siv raws li tus qauv hnyav xws li F2, thiab covcalibration qhov tshwm sim yuav muab tus nqi kho; Yog tias qhov hnyav ua haujlwm yog 4 (F2) qib hnyav, yuav tsis muab tus nqi kho.
Rau 1kg qhov hnyav thib peb nrog kev hloov kho kab noj hniav, nws tuaj yeem siv tau raws li M1 thiab 5 (M1) chav kawm qhov hnyav tib yam.
Rau 1kg plaub-chav hnyav nrog kev hloov kho kab noj hniav, nws tuaj yeem siv tau raws li M2 thiab 6 (M2) chav kawm hnyav tib yam.
Hauv kev xaus, cov txiaj ntsig saum toj no kuj siv rau qhov hnyav ntawm lwm qhov loj. Thawj qhov hnyav ntawm chav kawm thib 2 txog qib 5 (tshwj tsis yog cov khoom thib 2) raug faib ua F2, M1, M2 lossischav kawm4 (F2),chav kawm5 (M1),chav kawm6 (M2) thiabchav kawm7 (0) chav ntsuas qhov hnyav.
Lub sij hawm xa tuaj: Plaub Hlis-01-2022