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id="33mx9ag" class="clear"></div> </form> </div> <div id="rev9nop" class="clear"></div> </div> </div>  <script src="http://www.chem17.com/mystat.aspx?u=sanbon"></script>  <div id="9zgmpvb" class="ly_crumb"> <img src="/skins/170979/images/crumb_icon.png" /><p>當前位置：<a href="/">首頁(yè)</a> > <a href="/article.html">技術(shù)文章</a> > <span>實(shí)驗室電導率儀正確的使用方法</span></p> </div>   <div id="an98m33" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">實(shí)驗室電導率儀正確的使用方法</h1> <div id="ylhsawc" class="NyNewsdetail_tips">更新時(shí)間：2019-05-28 點(diǎn)擊次數：4325</div> <div id="33sok4z" class="NyNewsdetail_con"> 　　<strong>實(shí)驗室電導率儀</strong>是實(shí)驗室電導率測量?jì)x表，它除能測定一般液體的電導率外，且能滿(mǎn)足測量高純水的電導率的需要。儀器有0~10mV訊號輸出，可接自動(dòng)電子電位差計進(jìn)行連續記錄。電導率儀是食品廠(chǎng)、飲用水廠(chǎng)辦理QS、HACCP認證的*檢驗設備。<br /><br /><div>　　<strong>實(shí)驗室電導率儀</strong>使用方法。</div><div>　　未開(kāi)電源開(kāi)關(guān)前，觀(guān)察表針是否指零，如不知零，可調整表頭上的螺絲使表針指零。將校正、測量開(kāi)關(guān) 扳在校正位置。插接電源線(xiàn)，打開(kāi)電源開(kāi)關(guān)，并預熱數分鐘調節調正器使電表滿(mǎn)度指示。當使用前8個(gè)量程來(lái)測量電導率低于300 的液體時(shí)，選用低周，這時(shí)將板向低周即可。當使用后4個(gè)量程來(lái)測量電導率在300至范圍里的液體時(shí)，則將扳向高周。將量程選擇開(kāi)關(guān) 扳到所需要的測量范圍，如預先不知被測溶液電導率的大小，應先把其扳在大電導率測量檔，然后逐檔下降，以防表針打彎。<br /> </div><div>　　測量讀數：一般的測量其常數的旋鈕都打到1.0檔，測量前調正ADI旋到大值，然后再慢慢地調節，把測量開(kāi)關(guān)打到校正檔調好零點(diǎn)，選好量程，再把測量開(kāi)關(guān)打到測量的位置然后再讀數。<br /> </div><div>　　電極的使用：使用時(shí)用電極夾夾緊電極的膠木帽，并通過(guò)電極夾把電極固定在電極桿上。當被測溶液的電導率低于10 ，使用DJS——1型光亮電極。這時(shí)應把R 調節在與所配套的電極的常數項對應的位置上。例如，若配套電極的常數為0.95。則應把R 調節在0.95處，有如若配套電極的常數為1.1，則應把R調節在1.1的位置上。當被測溶液的電導率在~范圍，則使用DJS——1型鉑黑電極。同應把R 調節在與所配套電極的常數相對應的位置上。當被測溶液的電導率大于，以致用DJS——1型鉑黑電極測不出時(shí)，則使用DJS——10型鉑黑電極。這時(shí)應把R 調節在所配套的電極的常數的位置上。<br /> </div><div>　　將電極插頭插入插口內，旋緊插口上的緊固螺絲，在將電極浸入待測溶液中。接著(zhù)校正，當用1~8量程測量時(shí)，校正時(shí)扳在低周。當用9~12量程測量時(shí)，則校正時(shí)扳向高周，即將扳到校正，調節使指示針滿(mǎn)度。注意：為了提高測量精度，當使用×，×這兩檔時(shí)，校正必須在電導池接妥電極插頭插入插孔，電極浸入待測溶液中的情況下進(jìn)行。此后，將扳向測量，這時(shí)指示數乘以量程開(kāi)關(guān) 的倍率即為被測液的實(shí)際電導率。<br /> </div><div>　　當用0~0.1或0~0.3 這兩檔測量高純水時(shí)，先把電極引線(xiàn)插入電極插孔，在電極未浸入溶液之前，調節使電表指示為小值。然后開(kāi)始測量。如果要了解在測量過(guò)程中電導的變化情況，把10mV輸出接至自動(dòng)電位差計即可。當量程開(kāi)關(guān) 扳在×0.1，扳在低周。但電導池插口未插接電極時(shí)，電表就有指示，這是正?，F象，因電極插口及接線(xiàn)有電容存在。只要調節：電容補償便可將此指示調為零，擔不必這樣做，只須待電極引線(xiàn)插入插口后，再將指示調為小值即可。用奇數各檔時(shí)，都看表面上面一條刻度；而當用偶數各檔時(shí)，都看表面下面一條刻度。</div> </div> <div id="e3y8c3o" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-1853276.html">影響差壓變送器測量精度的主要因素</a></li> <li>下一篇：<a href="/Article-1845294.html">酸度計/PH計測試乳品后的清洗方法</a></li> </ul> </div> </div>   <div id="3iny9z8" class="ly_foot"> <div id="fn4ekbm" class="ly_Ftmain"> <div id="boeezkv" class="ly_FtLeft"> <div id="3uu4i43" class="Ft_nav"><a href="/">首頁(yè)</a><a href="/aboutus.html" target="_blank">關(guān)于我們</a><a href="/products.html" target="_blank">產(chǎn)品展示</a><a href="/news.html" target="_blank">新聞中心</a><a href="/article.html" target="_blank">技術(shù)文章</a><a href="/honor.html" target="_blank">榮譽(yù)資質(zhì)</a></div> <div id="n9gzq39" 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