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class="NyNewsdetail_tips">更新時(shí)間：2016-10-18 點(diǎn)擊次數：2060</div> <div id="8cjb8s8" class="NyNewsdetail_con"> <span style="font-family: 宋體; font-size: 10.5pt; line-height: 18px;">1</span><font face="宋體" style="font-family: 宋體; font-size: 10.5pt; line-height: 18px;">外觀(guān)檢查：</font><p class="MsoNormal" style="margin: 0px; padding: 0px; line-height: 18px; font-family: Verdana;"><span style="font-family: 宋體; font-size: 10.5pt;">a.<font face="宋體">敏感膜玻璃是否有刻痕、裂縫。<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">b.<font face="宋體">電極的內參比溶液是否渾濁、發(fā)霉（有絮狀物）。<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">c.<font face="宋體">復合電極外參比電極的液接界部位是否堵塞，一般可從顏色變化來(lái)加以判斷。<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">d.<font face="宋體">電極的引出線(xiàn)及插頭是否完好，特別是電極的插頭應該干燥、清潔。<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">如果出現上述現象，會(huì )影響電極的性能。</span><span style="font-family: 宋體; font-size: 10.5pt;"><o:p></o:p></span></p><p class="MsoNormal" style="margin: 0px; padding: 0px; line-height: 18px; font-family: Verdana;"><span style="font-family: 宋體; font-size: 10.5pt;">2<font face="宋體">性能檢查：<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">pH<font face="宋體">電極的技術(shù)指標主要有：零電位的</font><font face="Calibri">pH</font><font face="宋體">值，電極內阻，堿誤差，響應時(shí)間，百分理論斜率</font><font face="Calibri">(PTS)</font><font face="宋體">。<br /></font></span><span style="font-family: 宋體; font-size: 10.5pt;">當電極的百分理論斜率低于<font face="Calibri">90</font><font face="宋體">％時(shí)，建議更換電極。通常在模擬電路</font><font face="Calibri">pH</font><font face="宋體">計中，調節“斜率校準”電位器，顯示值達不到校準緩沖溶液所需的標準值時(shí)，需更換電極。在帶有微處理器的</font><font face="Calibri">pH</font><font face="宋體">計中，百分理論斜率由計算機自動(dòng)計算。當電極的百分理論斜率低于</font><font face="Calibri">90</font><font face="宋體">％時(shí)，為保證測量的準確性，建議更換電極。</font></span></p> </div> <div id="tcjvc9i" class="ly_PrevNext"> <ul> <li>上一篇：<a 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