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環(huán)境溫度在10-40℃之間的任意溫度下，試驗(yàn)期間的溫度變化在</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">5</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">℃</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">/d以內(nèi)。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 相對(duì)濕度在(65</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">20)%以內(nèi)。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 電壓規(guī)定的電壓(220</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">20) V。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 電源頻率規(guī)定的頻率(50</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0.5) Hz。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 流速制造商規(guī)定的流速。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> <strong>pH標(biāo)準(zhǔn)液</strong>溫度(25</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">1)</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">℃</span></span> </p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">2、試驗(yàn)準(zhǔn)備及校正 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 試驗(yàn)準(zhǔn)備長(zhǎng)期處于干燥狀態(tài)的</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">玻璃電極</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">上的水，應(yīng)預(yù)先將</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">電極</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">浸入水中浸泡過(guò)夜后，與信號(hào)轉(zhuǎn)換器連接。接通電源，至試驗(yàn)開(kāi)始前自動(dòng)分析儀應(yīng)預(yù)熱30min以上，以使各部分功能及顯示記錄單元穩(wěn)定。在電極受沾污情況下，必要時(shí)應(yīng)采用洗滌劑、0.01 mol/L鹽酸等洗滌后，用流水充分洗凈。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">校正的操作程序如下: </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 將<strong>電極</strong>浸入pH =9.180的標(biāo)準(zhǔn)液，將指示值調(diào)為</span></span><strong><span style="font-size:10.5pt"><span style="font-family:宋體">pH標(biāo)準(zhǔn)液</span></span></strong><span style="font-size:10.5000pt"><span style="font-family:宋體">的值。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 將<strong>電極</strong>浸入pH = 6.865的標(biāo)準(zhǔn)液，將指示值調(diào)為pH標(biāo)準(zhǔn)液的值。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 將<strong>電極</strong>浸入pH=4.008的標(biāo)準(zhǔn)液，將指示值調(diào)為pH標(biāo)準(zhǔn)液的值。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體"> 調(diào)節(jié)交替進(jìn)行8.2.2.1、8.2.2.2和8.2.2.3操作，調(diào)節(jié)分析儀直至顯示值與標(biāo)準(zhǔn)液的測(cè)定值之差在士0.1 pH以內(nèi)為止。</span></span></p> </div> <div id="3k2hsvbby" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-2017569/">膜元件內(nèi)進(jìn)水網(wǎng)格（進(jìn)水流道）對(duì)污堵的產(chǎn)生和污堵的可清洗性有何影響?</a></li> <li>下一篇：<a href="/szhcy-Article-2014028/">什么是反滲透系統(tǒng)的顆粒和膠體污染?如何測(cè)定?</a></li> </ul> </div> </div>   <div id="3k2hsvbby" class="foot_box"> <div id="3k2hsvbby" class="foot_t"> <div id="3k2hsvbby" class="w1200"> <a href="/">網(wǎng)站首頁(yè)</a>　|　<a href="/aboutus.html">關(guān)于我們</a>　|　<a href="/products.html">產(chǎn)品中心</a>　|　<a href="/news.html">新聞動(dòng)態(tài)</a>　|　<a 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