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)。氧化鋯氧分(fen)(fen)析(xi)儀是(shi)目前主流，而目前應(ying)環保部門的要(yao)求(qiu)，因燃(ran)料燃(ran)燒不充分(fen)(fen)產生SO2、NO2、CO等(deng)污染氣(qi)體(ti)，相(xiang)關工廠企業已(yi)經強制安裝氧量分(fen)(fen)析(xi)儀，氧化鋯氧量分(fen)(fen)析(xi)儀最為(wei)普及。

氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)(gao)(gao)(gao)探(tan)頭由(you)鋯(gao)(gao)(gao)(gao)池、加熱(re)元件、絕緣子、控(kong)(kong)制熱(re)電(dian)(dian)(dian)(dian)偶、過(guo)濾器(qi)、信號引線、高溫(wen)密封(feng)(feng)管等組成。氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)(gao)(gao)(gao)鋯(gao)(gao)(gao)(gao)池是頂針型感(gan)測(ce)元件，在(zai)封(feng)(feng)閉(bi)端(duan)安裝有內(nei)(nei)電(dian)(dian)(dian)(dian)極和外電(dian)(dian)(dian)(dian)極，內(nei)(nei)電(dian)(dian)(dian)(dian)極暴露(lu)在(zai)進入鋯(gao)(gao)(gao)(gao)池開口端(duan)的煙道氣(qi)(qi)(qi)體中，外電(dian)(dian)(dian)(dian)極處有通過(guo)泵供應(ying)參(can)比(bi)氣(qi)(qi)(qi)體因此處于(yu)氧(yang)(yang)氣(qi)(qi)(qi)含量20.95%的恒定分壓(ya)下，鋯(gao)(gao)(gao)(gao)池溫(wen)度由(you)加熱(re)器(qi)及控(kong)(kong)制熱(re)電(dian)(dian)(dian)(dian)偶恒定保持為700℃。氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)(gao)(gao)(gao)是一(yi)種當溫(wen)度超過(guo)600℃時只傳導(dao)氧(yang)(yang)離(li)子的電(dian)(dian)(dian)(dian)解質，故而鋯(gao)(gao)(gao)(gao)池電(dian)(dian)(dian)(dian)極輸出端(duan)之(zhi)間(jian)產生的電(dian)(dian)(dian)(dian)動(dong)(dong)勢隨(sui)著參(can)比(bi)電(dian)(dian)(dian)(dian)極與策略電(dian)(dian)(dian)(dian)極之(zhi)間(jian)的氧(yang)(yang)分壓(ya)差(cha)比(bi)率以及氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)(gao)(gao)(gao)溫(wen)度的變(bian)化(hua)(hua)(hua)而變(bian)化(hua)(hua)(hua)。依據能斯特方程，接觸煙道氣(qi)(qi)(qi)體的電(dian)(dian)(dian)(dian)極會隨(sui)著煙氣(qi)(qi)(qi)的氧(yang)(yang)含量影(ying)響氧(yang)(yang)分壓(ya)變(bian)化(hua)(hua)(hua)導(dao)致鋯(gao)(gao)(gao)(gao)池輸出電(dian)(dian)(dian)(dian)動(dong)(dong)勢的變(bian)化(hua)(hua)(hua)。氧(yang)(yang)化(hua)(hua)(hua)鋯(gao)(gao)(gao)(gao)輸出電(dian)(dian)(dian)(dian)動(dong)(dong)勢隨(sui)著氧(yang)(yang)含量的減(jian)小對數行(xing)地增加，從(cong)而滿足低氧(yang)(yang)含量下具有高靈(ling)敏(min)度測(ce)試要求。

二、氧化鋯氧量分析儀怎么標定

氧(yang)化鋯氧(yang)量分析儀標定方法如下(xia)：

1、本底校驗：這(zhe)個必須是(shi)在空氣(qi)中(zhong)校驗(yan)，如果(guo)不是(shi)在空氣(qi)中(zhong)，殘(can)留氣(qi)體(ti)就降低了標定(ding)(ding)的(de)參考值，不能(neng)達到(dao)(dao)空氣(qi)的(de)氧(yang)量值。我們擰下標氣(qi)口(kou)，標氣(qi)口(kou)在氧(yang)化鋯探頭(tou)的(de)接線盒中(zhong)，將探頭(tou)放在空氣(qi)中(zhong)，設置(zhi)（SET）菜單(dan)進(jin)入，根(gen)據說明(ming)書(shu)的(de)步驟，將光(guang)標選中(zhong)“本底自動(dong)校驗(yan)”，等到(dao)(dao)氧(yang)量表顯示20.6左(zuo)右即可。由于是(shi)已經用過的(de)探頭(tou)，內(nei)部肯定(ding)(ding)會有殘(can)留的(de)氣(qi)體(ti)，所(suo)以顯示值20.6左(zuo)右。

2、標氣自動校驗：同樣的是要擰下氧(yang)化鋯氧(yang)量分(fen)析儀標(biao)(biao)氣(qi)(qi)口，同樣的標(biao)(biao)氣(qi)(qi)口在(zai)(zai)，氧(yang)化鋯(gao)探頭的接線盒中(zhong)，我(wo)們(men)通入標(biao)(biao)氣(qi)(qi)，根據說(shuo)明(ming)書標(biao)(biao)定的步驟，選型“標(biao)(biao)氣(qi)(qi)自動(dong)校驗(yan)“，在(zai)(zai)銷(xiao)售氧(yang)化鋯(gao)分析儀的同時，也有(you)(you)標(biao)(biao)氣(qi)(qi)提供，客戶可以選購使用。標(biao)(biao)氣(qi)(qi)通常有(you)(you)4L和8L的標(biao)(biao)氣(qi)(qi)。在(zai)(zai)標(biao)(biao)氣(qi)(qi)自動(dong)校驗(yan)前(qian)，我(wo)們(men)通常先進行(xing)本底校驗(yan)，本底毫伏信號是(shi)否在(zai)(zai)0MV左右，越靠(kao)近0MV說(shuo)明(ming)越準(zhun)，待(dai)穩定后，將濃(nong)度校準(zhun)到空氣(qi)(qi)濃(nong)度。