一、氧化鋯氧量分析儀工作原理是什么

氧分析儀廣泛應用于電力、化工、鋼鐵等氧含量檢測，而煙氣中氧含量判斷是作為確定鍋爐系統中燃燒充分的依據，目前氧分析儀有磁氧分析儀、激光法氧分析儀、燃料電池法氧分析儀、氧化鋯氧量分析儀等(deng)。氧(yang)(yang)(yang)化(hua)鋯(gao)氧(yang)(yang)(yang)分(fen)(fen)析(xi)(xi)儀是目(mu)前主流，而目(mu)前應環保部門(men)的(de)要求，因燃(ran)料燃(ran)燒不充分(fen)(fen)產生SO2、NO2、CO等(deng)污(wu)染氣體，相關工(gong)廠企(qi)業已經強制安裝氧(yang)(yang)(yang)量分(fen)(fen)析(xi)(xi)儀，氧(yang)(yang)(yang)化(hua)鋯(gao)氧(yang)(yang)(yang)量分(fen)(fen)析(xi)(xi)儀最(zui)為普及。

氧(yang)化(hua)鋯(gao)(gao)探(tan)頭由(you)鋯(gao)(gao)池、加熱元件(jian)、絕緣子、控制(zhi)熱電(dian)(dian)(dian)(dian)(dian)(dian)偶、過濾(lv)器、信號引線、高(gao)溫(wen)密封(feng)管等組成。氧(yang)化(hua)鋯(gao)(gao)鋯(gao)(gao)池是頂(ding)針型(xing)感測(ce)(ce)元件(jian)，在封(feng)閉端(duan)安裝有內電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)和外電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)，內電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)暴露(lu)在進(jin)入(ru)鋯(gao)(gao)池開口端(duan)的煙(yan)道氣(qi)(qi)體(ti)(ti)中，外電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)處(chu)有通(tong)過泵供應參(can)比(bi)氣(qi)(qi)體(ti)(ti)因此處(chu)于氧(yang)氣(qi)(qi)含量20.95%的恒定分(fen)(fen)壓(ya)(ya)下，鋯(gao)(gao)池溫(wen)度(du)由(you)加熱器及(ji)控制(zhi)熱電(dian)(dian)(dian)(dian)(dian)(dian)偶恒定保持為700℃。氧(yang)化(hua)鋯(gao)(gao)是一(yi)種(zhong)當溫(wen)度(du)超過600℃時只傳導氧(yang)離子的電(dian)(dian)(dian)(dian)(dian)(dian)解質，故而(er)鋯(gao)(gao)池電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)輸(shu)(shu)出端(duan)之(zhi)間(jian)產生的電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢隨著參(can)比(bi)電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)與策略電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)之(zhi)間(jian)的氧(yang)分(fen)(fen)壓(ya)(ya)差比(bi)率以及(ji)氧(yang)化(hua)鋯(gao)(gao)溫(wen)度(du)的變(bian)化(hua)而(er)變(bian)化(hua)。依(yi)據能斯特方程，接觸煙(yan)道氣(qi)(qi)體(ti)(ti)的電(dian)(dian)(dian)(dian)(dian)(dian)極(ji)會隨著煙(yan)氣(qi)(qi)的氧(yang)含量影響氧(yang)分(fen)(fen)壓(ya)(ya)變(bian)化(hua)導致鋯(gao)(gao)池輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的變(bian)化(hua)。氧(yang)化(hua)鋯(gao)(gao)輸(shu)(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢隨著氧(yang)含量的減小對數行(xing)地增加，從而(er)滿(man)足低(di)氧(yang)含量下具有高(gao)靈敏(min)度(du)測(ce)(ce)試要求。

二、氧化鋯氧量分析儀怎么標定

氧(yang)化鋯(gao)氧(yang)量分析儀(yi)標定方法如下：

1、本底校驗：這個必(bi)須是(shi)在(zai)空氣(qi)(qi)(qi)中(zhong)校(xiao)驗，如(ru)果(guo)不是(shi)在(zai)空氣(qi)(qi)(qi)中(zhong)，殘留(liu)氣(qi)(qi)(qi)體就降低了標定(ding)的(de)參(can)考值(zhi)，不能達到空氣(qi)(qi)(qi)的(de)氧(yang)量值(zhi)。我們擰下標氣(qi)(qi)(qi)口(kou)，標氣(qi)(qi)(qi)口(kou)在(zai)氧(yang)化鋯(gao)探(tan)頭(tou)(tou)的(de)接線盒中(zhong)，將探(tan)頭(tou)(tou)放(fang)在(zai)空氣(qi)(qi)(qi)中(zhong)，設(she)置(zhi)（SET）菜單進入(ru)，根(gen)據說明(ming)書的(de)步(bu)驟，將光標選中(zhong)“本底自動校(xiao)驗”，等到氧(yang)量表(biao)顯示(shi)20.6左(zuo)右(you)即(ji)可。由于是(shi)已(yi)經用過的(de)探(tan)頭(tou)(tou)，內部肯(ken)定(ding)會有殘留(liu)的(de)氣(qi)(qi)(qi)體，所以顯示(shi)值(zhi)20.6左(zuo)右(you)。

2、標氣自動校驗：同樣的是要擰下氧化鋯氧量分析(xi)儀標(biao)(biao)氣(qi)口(kou)，同(tong)(tong)樣的(de)標(biao)(biao)氣(qi)口(kou)在，氧化鋯探頭的(de)接線盒中，我們通(tong)入標(biao)(biao)氣(qi)，根據說明書標(biao)(biao)定的(de)步驟，選(xuan)型“標(biao)(biao)氣(qi)自(zi)動(dong)校驗“，在銷售氧化鋯分析儀的(de)同(tong)(tong)時，也(ye)有標(biao)(biao)氣(qi)提供，客(ke)戶可以選(xuan)購使用(yong)。標(biao)(biao)氣(qi)通(tong)常(chang)有4L和8L的(de)標(biao)(biao)氣(qi)。在標(biao)(biao)氣(qi)自(zi)動(dong)校驗前(qian)，我們通(tong)常(chang)先進行本(ben)底校驗，本(ben)底毫(hao)伏信號是(shi)否在0MV左(zuo)右，越靠(kao)近0MV說明越準，待穩定后(hou)，將濃度校準到(dao)空氣(qi)濃度。