CalibrationSpecificationofLeChatelierFlaskforDeterminingDensity山西省市場(chǎng)監(jiān)督管理局發(fā)布 JJF（晉）91－2024李氏密度瓶校準(zhǔn)規(guī)范李氏密度瓶校準(zhǔn)規(guī)范CalibrationSpecificationofLeChatelierFlaskforDeterminingJJF（晉）91－2024JJF（晉）91－2024 1 1 1 1 2 3 3 3 3 3 3 3 3 4 5 6 7 8 附錄E彎月面的確定方法 JJF（晉）91－2024JJF（晉）91－2024李氏密度瓶校準(zhǔn)規(guī)范李氏密度瓶LeChatelierFlask體積，從而計(jì)算出試樣單位體積的質(zhì)量即為密度。李氏密度瓶瓶頸處刻線標(biāo)稱容量值：0JJF（晉）91－2024250mmCA20C10250-65mm-90mm圖1李氏密度瓶示意圖注：以上指標(biāo)不做合格性判定，僅供參考。JJF（晉）91－20243），在李氏密度瓶中注入水至0mL刻度線下方，用濾紙小心擦管壁上的水跡，將李氏李氏密度瓶在標(biāo)準(zhǔn)溫度20℃時(shí)的實(shí)際容量按下式計(jì)算:V=m.K(t)（1）JJF（晉）91－20244ΔV=Vs-V20V）；h)如果與校準(zhǔn)結(jié)果的有效性應(yīng)用有關(guān)時(shí)，應(yīng)對(duì)被校樣品的抽j)本次校準(zhǔn)所用測(cè)量標(biāo)準(zhǔn)的溯源性及有效性說明；JJF（晉）91－2024p)未經(jīng)實(shí)驗(yàn)室書面批準(zhǔn)，不得部分復(fù)制證書JJF（晉）91－20246標(biāo)稱容量（mL）水溫℃實(shí)測(cè)質(zhì)量m（g）查表K(t)實(shí)際容量V20(mL)平均值（mL）容量示值誤差擴(kuò)展不確定度U（mL）k=2JJF（晉）91－2024JJF（晉）91－20248水溫/℃0.00.10.20.30.40.50.60.70.80.91.002001.002011.002031.002041.002061.002071.002091.002101.002121.002131.002151.002161.002181.002191.002211.002221.002241.002251.002271.002291.002301.002321.002341.002351.002371.002391.002401.002421.002441.002461.002471.002491.002511.002531.002541.002561.002581.002601.002621.002641.002661.002671.002691.002711.002731.002751.002771.002791.002811.00283201.002851.002861.002881.002901.002921.002941.002961.002981.003001.00303211.003051.003071.003091.003111.003131.003151.003171.003191.003221.00324221.003271.003291.003311.003331.003351.003371.003391.003411.003431.00346231.003491.003511.003531.003551.003571.003591.003621.003641.003661.00369241.003721.003741.003761.003781.003811.003831.003861.003881.003911.00394251.003971.003991.004011.004031.004051.004081.004101.004131.004161.00419JJF（晉）91－20249水溫 /℃0.00.10.20.30.40.50.60.70.81.002081.002091.002101.002111.002131.002141.002151.002171.002181.002211.002221.002231.002251.002261.002281.002291.002301.002321.002351.002361.002381.002391.002411.002421.002441.002461.002471.002511.002521.002541.002551.002571.002581.002601.002621.002631.002671.002681.002701.002721.002741.002761.002771.002791.00281201.002851.002871.002891.002911.002921.002941.002961.002981.00300211.003041.003061.003081.003101.003121.003141.003151.003171.00319221.003231.003251.003271.003291.003311.003331.003351.003371.00339231.003441.003461.003481.003501.003521.003541.003561.003591.00361241.003661.003681.003701.003721.003741.003761.003791.003811.00383251.003891.003911.003931.003951.003971.004001.004021.004041.00407JJF（晉）91－2024將潔凈的李氏密度瓶注入純水至瓶頸0mL刻度線處，使水的彎月面最低點(diǎn)與0mL純水溫度，測(cè)得的質(zhì)量值乘以K(t)值為李氏密度瓶20℃實(shí)際容量值。每點(diǎn)測(cè)量3次，取V=m.K(t)ΔV=Vs-V20VJJF（晉）91－2024則質(zhì)量測(cè)量引入的不確定度分量u(m)為:D.3.2測(cè)定水溫對(duì)應(yīng)的修正系數(shù)引入的不確定度分量u(K(t))D.3.2.1測(cè)溫設(shè)備讀數(shù)引入的不確定度分量u(K(t)1)JJF（晉）91－2024勻分布，則溫度計(jì)讀數(shù)引入的不確定度分量u(K(D.3.2.2測(cè)溫設(shè)備示值誤差引入的不確定度分量u(K(t)2)u(K(t)2)則測(cè)定水溫對(duì)應(yīng)的修正系數(shù)引入的不確定度分量u(K(t))為D.3.2.3標(biāo)稱容量不準(zhǔn)引入的不確定度分量u(VS)v=πr2h=0.0126mLJJF（晉）91－2024表3標(biāo)準(zhǔn)不確定度分量匯總表標(biāo)準(zhǔn)不確定度分量不確定度來源靈敏系數(shù)標(biāo)稱容量不準(zhǔn)u(VS)1輸入量u(m)質(zhì)量測(cè)量重復(fù)性u(píng)(