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    凈輻射傳感器 我有新說法
    40 0

    TH-FS7凈輻射傳感器作為一種高精度環(huán)境監(jiān)測設(shè)備,主要用于科學測量自然環(huán)境中全波段輻射能量的動態(tài)平衡值。

    一、產(chǎn)品概述

    凈輻射傳感器被用來測量由天空向下投射的和地球表面向上投射的全波段輻射量的凈差值。測量范圍為0.3~3微米的短波輻射和3~100微米的地球輻射。應(yīng)用于土壤水分蒸發(fā)蒸騰計算、及熱平衡相關(guān)的建筑機理研究。

    凈輻射傳感器廣泛應(yīng)用于農(nóng)業(yè)氣象、土壤水分蒸發(fā)蒸騰損失總量計算、農(nóng)作物災害預防及熱平衡相關(guān)的建筑機理研究。

    二、產(chǎn)品特點

    1、成本低、性價比高。

    2、適用于各種惡劣環(huán)境。

    3、無源精確測量。

    4、靈敏度高。

    5、模擬量與數(shù)字量雙輸出信號。

    6、使用、運維方便。

    三、應(yīng)用場合

    1、農(nóng)林業(yè)生態(tài)研究。

    2、土壤水分蒸發(fā)蒸騰損失總量計算。

    3、農(nóng)作物災害預防。

    4、熱平衡相關(guān)的建筑機理研究。

    四、工作原理

    凈輻射傳感器的工作原理為熱電效應(yīng),感應(yīng)部分是由康銅絲鍍銅組成的熱電堆,熱電堆的上面涂有進口高吸收無光黑色涂層。兩個熱電堆分別接收太陽輻射和大地輻射。由于上下感應(yīng)面吸收的輻射度不同,使得熱電堆兩端產(chǎn)生溫度差異,其輸出電動勢與感應(yīng)面接收到的輻照度差值成正比。

    凈輻射傳感器裝有能透過短波輻射(0.3~3微米)和長波輻射(3~100微米)的半球形專用聚乙烯薄膜罩,防止風、雨對輻射表輸出的影響及保護感應(yīng)面,輸出輻射量(W/m2)=測量輸出電壓信號值(μV)÷靈敏度系數(shù)(μV/W?m-2),每個傳感器分別給出標定過的靈敏度系數(shù)。

    五、技術(shù)指標

    技術(shù)參數(shù)技術(shù)指標光譜范圍3000~100000 nm(長波輻射);300~3000 nm(短波輻射)信號范圍-2000~+2000W/m2輸出信號-20~+20mV靈敏度7~14μV/W?m-2響應(yīng)時間≤18 S(99%)內(nèi)阻約350Ω年穩(wěn)定度≤±2%感應(yīng)面的一致性±15%工作環(huán)境溫度-40℃~+50℃工作環(huán)境濕度0~100%RH重量0.86kg

    參考資料

    參考資料編輯區(qū)域


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    規(guī)格 底盤直徑:Φ120mm
    長度:307mm
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