紅外一氧化碳分析儀用于檢測環境中一氧化碳濃度并提供預警。其采用非色散紅外線技術（即一氧化碳對紅外光譜的選擇性吸收）作為檢測原理，配備精密設計的光學吸收池和穩定可靠的電路，同時在軟件上采用修正算法對CO濃度進行修正，保證其在全量程范圍內有良好的線性度與較小的測量誤差。下面我們來該儀器的具體校準方法和開機測量步驟。
紅外一氧化碳分(fen)析(xi)儀的零點校準：
空(kong)氣(qi)中一氧(yang)化碳(tan)濃度(du)一般為(wei)0～2.5ppm。當儀器連續運(yun)行較(jiao)長(chang)時(shi)間后，會出(chu)現零點漂移，用戶需每隔若干小時(shi)進行一次(ci)零點校準(zhun)。用戶可選(xuan)擇氮(dan)氣(qi)校準(zhun)或催化校準(zhun)。
當選擇氮(dan)氣(qi)校(xiao)準時，具體操作為：給(gei)儀(yi)器(qi)通入純氮(dan)氣(qi)（零氣(qi)），流量大約為1-1.2L/min，在(zai)“參數設置”界(jie)面點擊(ji)“氮(dan)氣(qi)校(xiao)準”。此時“剩(sheng)余時間”會(hui)開始進行倒計時，結(jie)束時校(xiao)準完成，“零點值”會(hui)更新(xin)。
當選擇催化校準時(shi)(shi)，具(ju)體操(cao)作為：直接在(zai)“參數設(she)置”界面點擊“催化校準”，儀器即開啟校準過(guo)程。此時(shi)(shi)“剩余時(shi)(shi)間”會開始(shi)進行(xing)倒計(ji)時(shi)(shi)，結(jie)束時(shi)(shi)校準完(wan)成，“零點值”會更(geng)新。
開機與(yu)測量(liang)：
紅外(wai)(wai)(wai)一(yi)(yi)氧化(hua)碳(tan)分析儀有(you)兩種供(gong)(gong)電(dian)(dian)(dian)方式，交流(liu)供(gong)(gong)電(dian)(dian)(dian)和蓄電(dian)(dian)(dian)池(chi)(chi)供(gong)(gong)電(dian)(dian)(dian)，儀器(qi)默認使用交流(liu)供(gong)(gong)電(dian)(dian)(dian)。交流(liu)供(gong)(gong)電(dian)(dian)(dian)時，將(jiang)(jiang)面板(ban)上的“電(dian)(dian)(dian)池(chi)(chi)-外(wai)(wai)(wai)接”轉換(huan)(huan)開關(guan)(guan)撥到“外(wai)(wai)(wai)接”處，將(jiang)(jiang)220V轉10.9V電(dian)(dian)(dian)源(yuan)適配器(qi)輸出插頭插在儀器(qi)面板(ban)的外(wai)(wai)(wai)接電(dian)(dian)(dian)源(yuan)處，另一(yi)(yi)端連(lian)接到220V市電(dian)(dian)(dian)；采用電(dian)(dian)(dian)池(chi)(chi)供(gong)(gong)電(dian)(dian)(dian)時，將(jiang)(jiang)面板(ban)上的“電(dian)(dian)(dian)池(chi)(chi)-外(wai)(wai)(wai)接”轉換(huan)(huan)開關(guan)(guan)撥到“電(dian)(dian)(dian)池(chi)(chi)”處，按(an)下(xia)電(dian)(dian)(dian)源(yuan)開關(guan)(guan)，紅色指示燈(deng)亮(liang)。觸摸(mo)屏顯(xian)示內容包括一(yi)(yi)氧化(hua)碳(tan)濃度(du)、溫度(du)、濕度(du)、時間(jian)、電(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)量，儀器(qi)每(mei)秒(miao)鐘更新一(yi)(yi)次(ci)數據。待儀器(qi)預熱后，即可穩定測量環境中一(yi)(yi)氧化(hua)碳(tan)濃度(du)。
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