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)化鋯(gao)氧(yang)(yang)分(fen)(fen)析儀(yi)是目(mu)前主(zhu)流，而目(mu)前應環(huan)保(bao)部門的要求，因燃料燃燒不充分(fen)(fen)產生SO2、NO2、CO等(deng)污染氣體，相關工廠企業(ye)已經強(qiang)制安(an)裝氧(yang)(yang)量分(fen)(fen)析儀(yi)，氧(yang)(yang)化鋯(gao)氧(yang)(yang)量分(fen)(fen)析儀(yi)最為普及。

氧(yang)(yang)(yang)化(hua)鋯(gao)(gao)探頭由鋯(gao)(gao)池、加熱元件(jian)、絕緣子、控制熱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶、過濾器、信號引線、高溫(wen)(wen)密封(feng)管等組成。氧(yang)(yang)(yang)化(hua)鋯(gao)(gao)鋯(gao)(gao)池是頂針型感測元件(jian)，在(zai)封(feng)閉(bi)端(duan)安裝有(you)(you)內(nei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)和外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)，內(nei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)暴露在(zai)進入鋯(gao)(gao)池開口端(duan)的(de)(de)(de)(de)煙(yan)道(dao)氣(qi)(qi)(qi)體中，外電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)處有(you)(you)通過泵供應參比氣(qi)(qi)(qi)體因此(ci)處于氧(yang)(yang)(yang)氣(qi)(qi)(qi)含量(liang)20.95%的(de)(de)(de)(de)恒定(ding)分(fen)壓下，鋯(gao)(gao)池溫(wen)(wen)度由加熱器及控制熱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶恒定(ding)保持為700℃。氧(yang)(yang)(yang)化(hua)鋯(gao)(gao)是一種當溫(wen)(wen)度超(chao)過600℃時(shi)只傳導(dao)氧(yang)(yang)(yang)離(li)子的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解質，故而鋯(gao)(gao)池電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)輸出端(duan)之間產生的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢隨(sui)著參比電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)與策略(lve)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)之間的(de)(de)(de)(de)氧(yang)(yang)(yang)分(fen)壓差比率以(yi)及氧(yang)(yang)(yang)化(hua)鋯(gao)(gao)溫(wen)(wen)度的(de)(de)(de)(de)變化(hua)而變化(hua)。依(yi)據能斯特方程，接(jie)觸煙(yan)道(dao)氣(qi)(qi)(qi)體的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)(ji)會隨(sui)著煙(yan)氣(qi)(qi)(qi)的(de)(de)(de)(de)氧(yang)(yang)(yang)含量(liang)影響氧(yang)(yang)(yang)分(fen)壓變化(hua)導(dao)致鋯(gao)(gao)池輸出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的(de)(de)(de)(de)變化(hua)。氧(yang)(yang)(yang)化(hua)鋯(gao)(gao)輸出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢隨(sui)著氧(yang)(yang)(yang)含量(liang)的(de)(de)(de)(de)減小對數(shu)行地增加，從而滿足低(di)氧(yang)(yang)(yang)含量(liang)下具有(you)(you)高靈敏度測試要求。

二、氧化鋯氧量分析儀怎么標定

氧化鋯氧量分析儀標定方(fang)法如下：

1、本底校驗：這個必須是在(zai)(zai)空(kong)(kong)氣(qi)(qi)中(zhong)校驗(yan)，如果不是在(zai)(zai)空(kong)(kong)氣(qi)(qi)中(zhong)，殘留氣(qi)(qi)體(ti)(ti)就降低了標(biao)(biao)定的(de)(de)參考值，不能達到空(kong)(kong)氣(qi)(qi)的(de)(de)氧(yang)(yang)量(liang)值。我們擰下標(biao)(biao)氣(qi)(qi)口(kou)，標(biao)(biao)氣(qi)(qi)口(kou)在(zai)(zai)氧(yang)(yang)化鋯探(tan)頭(tou)的(de)(de)接線盒中(zhong)，將探(tan)頭(tou)放在(zai)(zai)空(kong)(kong)氣(qi)(qi)中(zhong)，設(she)置（SET）菜單進入，根(gen)據說(shuo)明書(shu)的(de)(de)步驟(zou)，將光標(biao)(biao)選中(zhong)“本底自(zi)動校驗(yan)”，等到氧(yang)(yang)量(liang)表顯示20.6左右即(ji)可。由于是已經(jing)用過的(de)(de)探(tan)頭(tou)，內(nei)部肯(ken)定會有殘留的(de)(de)氣(qi)(qi)體(ti)(ti)，所以顯示值20.6左右。

2、標氣自動校驗：同樣的是要擰下氧化鋯氧量分析儀標(biao)(biao)(biao)氣(qi)口，同樣的(de)(de)標(biao)(biao)(biao)氣(qi)口在，氧化(hua)鋯探頭的(de)(de)接線盒(he)中，我們(men)通入標(biao)(biao)(biao)氣(qi)，根(gen)據說明書標(biao)(biao)(biao)定(ding)的(de)(de)步驟，選(xuan)型“標(biao)(biao)(biao)氣(qi)自動校(xiao)驗(yan)“，在銷售氧化(hua)鋯分析(xi)儀的(de)(de)同時(shi)，也有(you)標(biao)(biao)(biao)氣(qi)提供，客戶可以選(xuan)購使(shi)用(yong)。標(biao)(biao)(biao)氣(qi)通常(chang)有(you)4L和8L的(de)(de)標(biao)(biao)(biao)氣(qi)。在標(biao)(biao)(biao)氣(qi)自動校(xiao)驗(yan)前(qian)，我們(men)通常(chang)先進行本(ben)底校(xiao)驗(yan)，本(ben)底毫伏信號是否(fou)在0MV左右，越(yue)靠(kao)近0MV說明越(yue)準，待穩(wen)定(ding)后，將濃(nong)度校(xiao)準到空氣(qi)濃(nong)度。