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<div>　　<strong>ph酸度計</strong>以下幾個使用方面可以判斷質量的好壞:<br /> </div><div>　　1、穩(wěn)定性：如果酸度計不穩(wěn)定，讀數較為困難，就難以保證此臺儀器的準確性，穩(wěn)定性體現在二方面，一方面指單臺儀器的穩(wěn)定性，把同一儀器長時間放置穩(wěn)定溶液中，觀察數值是否變化和變化的幅度；另一方面是多臺儀器的穩(wěn)定性，把幾臺校驗好的同一型號儀器放在同一穩(wěn)定溶液中觀察讀數的一致性及誤差相差多少，若幾臺同型號儀器之間無法保證穩(wěn)定性，那么每臺儀器的正確及穩(wěn)定性就需要考量了。<br /> </div><div>　　2、正確性：正確性是酸度計的關鍵，判斷方法是利用高精度的儀器及高精度的標準液來校驗。<br /> </div><div>　　3、界面美觀，操作方面：有些舊式的酸度計，使用模擬開關，使校準很困難，很小的變化很難被發(fā)現，容易產生致命的系統(tǒng)誤差。現在大部分廠家采用的是lcd液晶顯示，但有些廠商為了降低成本仍然采用led數據管顯示。<br /> </div><div>　　4、常見誤差的調整：引起ph誤差的明顯的因素是溫度，酸度計有無溫度探頭，以及溫度探頭是否靈敏也是判斷酸度計質量好壞重要的一項。<br /> </div><div>　　5、安全性：現在有更多的用戶對儀器的安全性越來越關注，設計合理的儀器會采用較低的安全電壓輸進，這樣能夠大大提高酸度計的安全性能。<br /> </div><div>　　6、探頭優(yōu)劣：探頭的性能優(yōu)劣是酸度計最重要的技術指標，如果沒有好的探頭，那么酸度計的優(yōu)質就無從談起。<br /> </div> </div> <div id="d3hz557bpn5" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-3565808/">ph計的分類介紹</a></li> <li>下一篇：<a href="/szhcy-Article-3556023/">中水回用廢水處理設備系統(tǒng)優(yōu)勢你知道哪些？</a></li> </ul> </div> </div>   <div id="d3hz557bpn5" 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