隧道能見度COVI二氧化氮檢測(cè)器
我有新說法
TH-SDN2隧道能見度COVI二氧化氮檢測(cè)器是一種集成能見度、一氧化碳（CO）和二氧化氮（NO?）監(jiān)測(cè)功能的綜合環(huán)境監(jiān)測(cè)設(shè)備，專為隧道等密閉或半密閉空間設(shè)計(jì)，能夠?qū)崟r(shí)、準(zhǔn)確地監(jiān)測(cè)隧道內(nèi)的空氣質(zhì)量參數(shù)，為隧道的安全運(yùn)營提供重要保障。
產(chǎn)品簡(jiǎn)介
SDN2檢測(cè)儀根據(jù)透射原理工作，發(fā)射/接收器和反射器相對(duì)安裝，利用支架固定對(duì)準(zhǔn)后，光學(xué)部件發(fā)出的高聚焦光束成為一條檢測(cè)光束，安裝距離間隔3米（往返雙光路，實(shí)際檢測(cè)光程為6米），由于塵埃的衰減，接收器得到信號(hào)后處理為測(cè)量值。根據(jù)我國《公路隧道通風(fēng)照明設(shè)計(jì)規(guī)范》要求，裝在隧道頂部或者側(cè)壁上。
該智能檢測(cè)儀內(nèi)部自帶補(bǔ)償功能，在光學(xué)鏡頭在被污染情況，能自動(dòng)進(jìn)行增益補(bǔ)償，從而保證了較長(zhǎng)的維護(hù)周期。隧道是一種特殊的管狀構(gòu)造物，由于空間小，具有密閉性的特點(diǎn)，行經(jīng)隧道的車輛所排放的廢氣，如不及時(shí)合理的排放出去，造成CO和懸浮顆粒物的聚集以及氮氧化物（NOX）等有毒氣體超標(biāo)，將直接關(guān)系到行經(jīng)隧道的車輛司乘人員和維護(hù)工作人員的人身安全。
SDN2系列是設(shè)計(jì)用來在線采集VI/CO/NO2數(shù)據(jù)，提供給交通監(jiān)管部門，為隧道通風(fēng)及道路安全通行提供決策依據(jù)。
產(chǎn)品特點(diǎn)
1.可同時(shí)或者分別測(cè)量能見度（VI）、一氧化碳（CO）和二氧化氮（NO2）；
2.高分辨率的能見度測(cè)量；
3.測(cè)量wan全不受其它雜散光源的影響；
4.專門針對(duì)隧道惡劣環(huán)境設(shè)計(jì)；
5.有效避免環(huán)境、過往車輛振動(dòng)造成的無法測(cè)量；
6.安裝、開機(jī)、維護(hù)費(fèi)用低；
7.儀器自帶狀態(tài)顯示、故障告警和數(shù)據(jù)存儲(chǔ)功能，便于調(diào)試和設(shè)備維護(hù)；
8.多種輸出方式，數(shù)據(jù)采集方便；
9.du有的補(bǔ)償功能，保證了較長(zhǎng)的維護(hù)周期；
10.非接觸式、連續(xù)監(jiān)測(cè)能見度；
11.使用了最新微處理器技術(shù)，wan全數(shù)字化運(yùn)行.
技術(shù)參數(shù)
安裝方式：壁掛安裝
供電方式：AC 90-305V
測(cè)量值：VI值：1/m，
C O濃度：PPM
NO2濃度：PPM
測(cè)量原理：光線投射法
測(cè)量范圍：V I：0--35×10-31/m，
CO：0--1000PPM
NO2：0--20PPM
測(cè)量距離：6米光路（探頭安裝距離3米）
精度：V I：±0.0001 1/m，
CO：±1PPM
NO2：±0.5PPM
輸出間隔：10秒
數(shù)字輸出：RS485
模擬信號(hào)輸出：3通道0/4mA-20mA（內(nèi)部阻抗不大于500Ω）
數(shù)據(jù)更新率:6/min
可靠性：平均wu故障時(shí)間不小于5000小時(shí)
自動(dòng)補(bǔ)償功能：VI具備自我校準(zhǔn)和自動(dòng)零點(diǎn)功能
功耗:<15W
環(huán)境溫度:-40~+75℃
空氣濕度:0~100%RH
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隧道COVI檢測(cè)器是一種專門用于監(jiān)測(cè)隧道內(nèi)一氧化碳（CO）濃度和能見度（VI）的傳感器設(shè)備。COVI檢測(cè)器在隧道運(yùn)營管理中扮演著至關(guān)重要的角色，通過實(shí)時(shí)監(jiān)測(cè)隧道內(nèi)的空氣質(zhì)量參數(shù)，為通風(fēng)系統(tǒng)控制、交通安全保障及應(yīng)急響應(yīng)提供關(guān)鍵數(shù)據(jù)支持。