1  技術(shù)說明
SDF-Ⅱ型便攜式pH計(jì)/電導(dǎo)儀/分光光度計(jì)檢定裝置是由pH計(jì)檢定儀、電導(dǎo)儀計(jì)量標(biāo)準(zhǔn)、分光光度計(jì)計(jì)量標(biāo)準(zhǔn)所組成。主要用于PH計(jì)、電導(dǎo)儀以及分光光度計(jì)的檢定與校準(zhǔn)。
2 主要技術(shù)指標(biāo)
1．PH計(jì)檢定儀：
pH輸出范圍：0～14.0000；
pH示值誤差：0.0005pH（0～14.0000）；
mV輸出范圍：-2000.00mV～+2000.00 mV；
mV分辨率：0.02mV；
溫度補(bǔ)償范圍：0℃～99.9℃。
2．電導(dǎo)儀計(jì)量標(biāo)準(zhǔn)
量限：0.05μS～2×104μS;
精度：0.05%(1μS～2×104μS);
      0.1%(0.05μS～1μS)。
3．分光光度計(jì)計(jì)量標(biāo)準(zhǔn)
校準(zhǔn)范圍：200nm～900nm；
波長(zhǎng)不確定度：0.01nm～1.0nm；
透射比不確定度：0.5%
本標(biāo)準(zhǔn)由以下幾部分組成：
1 波長(zhǎng)標(biāo)準(zhǔn)：低壓汞燈波長(zhǎng)標(biāo)準(zhǔn)器、干涉濾光片標(biāo)準(zhǔn)物質(zhì)、鐠釹濾光片標(biāo)準(zhǔn)物質(zhì)、氧化鈥濾光片標(biāo)準(zhǔn)物質(zhì)
2 透射比標(biāo)準(zhǔn)：可見光區(qū)透射比標(biāo)準(zhǔn)濾光片標(biāo)準(zhǔn)物質(zhì)、紫外光區(qū)透射比濾光片
3 雜散輻射率濾光片標(biāo)準(zhǔn)物質(zhì)

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