N20型能見度傳感器采用前向散射法測量空氣總消光系數(shù),進而計算當(dāng)前能見度,廣泛用于道路交通、氣象等行業(yè)。儀器外殼為高質(zhì)量鋁材料,陽極氧化后進行噴漆處理,整機防水、防塵、防碰撞性能優(yōu)異;
一、產(chǎn)品簡介
N20型能見度傳感器采用前向散射法測量空氣總消光系數(shù),進而計算當(dāng)前能見度,廣泛用于道路交通、氣象等行業(yè)。
二、技術(shù)特點
1.儀器外殼為高質(zhì)量鋁材料,陽極氧化后進行噴漆處理,整機防水、防塵、防碰撞性能優(yōu)異;
2.儀器發(fā)射、接收鏡頭向下設(shè)計,極大降低太陽光等雜光干擾;
3.天氣現(xiàn)象識別,可識別霧、雨、雪、混合降水、晴等天氣現(xiàn)象,識別率高;
4.內(nèi)置看門狗電路,保證長時間戶外運行可靠、穩(wěn)定;
5.儀器通信、電源接口均含防雷設(shè)計,極大限度降低雷擊、靜電損害;
6.12~24V寬壓供電,總功率約1W,功耗極低,可使用太陽能板、蓄電池等長期供電;
7.數(shù)字接口使用RS485或RS232,標(biāo)準(zhǔn)MODBUS協(xié)議,無需進行協(xié)議適配;
8.儀器可輸出15s、1min、10min能見度值,無需配置即可直接讀取,使用更加靈活。
三、執(zhí)行標(biāo)準(zhǔn)
QX/T 536-2020前向散射式能見度儀測試方法
四、技術(shù)指標(biāo)
主要參數(shù) | 參數(shù)范圍 | 分辨率 | 誤差 |
量程 | 20km | 1m | ≤2km ±2%2km~10km ±5%>10km ±10% |
重復(fù)性 | ≤4% |
天氣現(xiàn)象 | 霧、雨、雪、混合降水、晴 |
天氣現(xiàn)象識別率 | ≥95% |
工作溫度 | -40~60℃ |
工作濕度 | 0~100%RH |
工作電源 | 12~24V |
功耗 | 1W |
尺寸 | 610x230x360mm(長 x 寬 x 高) |
重量 | ≤10kg |
五、安裝說明
1. 安裝位置
能見度儀的安裝位置需要選擇在開闊、平坦、無遮擋的地面上,遠離建筑物、樹木、灌木、高峰等物體。這樣可以確保儀器觀測范圍不受遮擋,數(shù)據(jù)更加準(zhǔn)確。
應(yīng)避免不必要的光學(xué)干擾,能見度儀的接收器應(yīng)背對強光源(如太陽光)進行安裝,發(fā)射器與接收器應(yīng)位于南北方向。
2.安裝高度
能見度儀安裝高度應(yīng)大于 1.5m 且小于 3m,安裝高度超過 3m 應(yīng)進行對應(yīng)高度的校準(zhǔn)。
3.安裝步驟
3.1安裝前用戶應(yīng)準(zhǔn)備立柱,使用儀器自帶的卡箍安裝到立柱上。
3.2將儀器托舉到合適位置,使用卡箍后的螺栓對能見度儀進行安裝固定,安裝時應(yīng)保證接收器與發(fā)射器開口向下,否則應(yīng)重新安裝。
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