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\r土壤水分溫度測試儀<\/span>QS-WT<\/span>能**檢測土壤水分和土壤溫度，測量迅速，結(jié)果直讀，可以<\/span>對各種類型的土壤進(jìn)行野外流動(dòng)測試，能夠滿足農(nóng)業(yè)、林業(yè)、環(huán)境保護(hù)、水利、氣象等部門對<\/span>土壤監(jiān)測、節(jié)水灌溉、溫室控制**農(nóng)業(yè)的<\/span>工作需求。<\/span><\/span>
\r<\/span><\/strong>
\r二、檢測原理：<\/span><\/span><\/strong>
\r水分測量采用標(biāo)準(zhǔn)的頻域反射原理，<\/span>儀器發(fā)射特定頻率的電磁波，電磁波沿<\/span>傳感器<\/span>探針傳輸?shù)竭_(dá)土壤底部后返回，檢測探頭輸出的電壓，由輸出電壓和水分的曲線模型關(guān)系自動(dòng)計(jì)算出土壤的含水量數(shù)值；溫度測量采用接觸式硅半導(dǎo)體傳感方式；<\/span><\/span><\/strong>
\r<\/span><\/strong>
\r三、功能特點(diǎn)：<\/span><\/span><\/strong>
\r*<\/span>直接測量<\/span>土壤含水量和溫度<\/span>并顯示數(shù)值，快速準(zhǔn)確<\/span><\/span>
\r*<\/span>測量范圍寬區(qū)域設(shè)計(jì)，<\/span>可以檢測<\/span>土壤、糧食、煙絲、蒸氣及各種液體<\/span>的溫度<\/span><\/span>
\r*<\/span>便攜式設(shè)計(jì)，手持即可操作<\/span><\/span>
\r*LCD<\/span>液晶數(shù)字顯示器，顯示<\/span>清晰、直觀<\/span><\/span>
\r*<\/span>內(nèi)置高容量可充電電池，配備快速充電器<\/span><\/span>
\r*<\/span>測試速度快，<\/span>0.<\/strong>5<\/span>秒鐘即可測試出結(jié)果。<\/span> <\/span>
\r*<\/span>可根據(jù)用戶需要設(shè)定自動(dòng)關(guān)機(jī)時(shí)間，出廠設(shè)置<\/span>3<\/span>分鐘待機(jī)自動(dòng)關(guān)機(jī)功能<\/span> <\/span>
\r*<\/span>節(jié)電的<\/span>5<\/span>秒鐘探頭預(yù)熱測量模式；<\/span><\/span>
\r*<\/span>專用手提式機(jī)箱，方便野外檢測 <\/span><\/span>
\r*<\/span>溫度傳感器采用硅半導(dǎo)體，測量迅速，準(zhǔn)確度高，穩(wěn)定性高，<\/span>300uA<\/span>超低電流設(shè)計(jì)、超低耗電，比同類節(jié)電上千倍<\/span><\/span>
\r*<\/span>傳感器信號(hào)輸出采用標(biāo)準(zhǔn)的電流環(huán)傳送技術(shù)，抗干擾能力強(qiáng)，傳送距離遠(yuǎn)<\/span><\/span>
\r*<\/span>水分傳感器材料為聚四氟乙烯，密封防水耐酸堿抗腐蝕，可以長期埋入土中免維護(hù)<\/span><\/span>
\r*<\/span>水分傳感器經(jīng)過嚴(yán)格標(biāo)定，受土質(zhì)影響小，各種土質(zhì)、地區(qū)都能使用<\/span><\/span>
\r<\/span><\/strong>
\r四、水分測量技術(shù)指標(biāo)：<\/span><\/strong> <\/span><\/span>
\r◆<\/span>測試類型：體積含水量<\/span><\/span>
\r◆<\/span>測試范圍：0<\/span>～**<\/span><\/span>（<\/span>m^{3<\/span><\/sup>/ m3<\/span><\/sup><\/span>）<\/span><\/span>
\r◆<\/span>反應(yīng)時(shí)間：<\/span><0.<\/strong>5<\/span>秒<\/span><\/span>
\r◆<\/span>探頭長度：不銹鋼部分6.5cm<\/span><\/span>
\r◆<\/span>電纜長度：<\/span>1.7<\/span>米**可延長到<\/span>50<\/span>米）；<\/span><\/span>
\r◆<\/span>測試的**誤差：≤2% <\/span><\/span><\/span>
\r◆<\/span>相對百分誤差：≤3% <\/span><\/span>
\r◆<\/span>水分測量原理：傳感器頻域反射<\/span><\/span>
\r◆<\/span>探頭輸出電壓：0-2.5<\/span>伏<\/span><\/span>
\r◆<\/span>工作電壓：12<\/span>或24VDC<\/span><\/span>
\r◆<\/span>按鍵方式：薄膜輕觸式<\/span><\/span>
\r◆<\/span>顯示方式：<\/span>LCD<\/span>液晶、數(shù)字直讀<\/span><\/span>
\r◆<\/span>工作環(huán)境：溫度：<\/span>-30<\/span>～<\/span>70<\/span>℃<\/span>  <\/span><\/span>濕度：<\/span>≤<\/span>90%RH<\/span>
\r<\/span><\/strong>
\r五、溫度測量技術(shù)指標(biāo)：<\/span><\/strong><\/span><\/strong>
\r◆<\/span>測溫范圍：<\/span>-50<\/span>℃～<\/span>65<\/span>℃<\/span><\/span>
\r◆<\/span>準(zhǔn)確度：<\/span>±0.3<\/span><\/span>℃<\/span>滿度±0.1<\/span><\/span>℃<\/span>  <\/span><\/span>
\r◆<\/span>靈敏度：±0.1<\/span><\/span>℃<\/span><\/span>
\r◆<\/span>傳感器：<\/span>硅半導(dǎo)體<\/span><\/span>
\r◆<\/span>顯示方式：<\/span>LCD<\/span>液晶<\/span><\/span>
\r◆<\/span>按鍵方式：薄膜輕觸式<\/span><\/span>
\r◆<\/span>溫度測量原理：接觸式硅半導(dǎo)體傳感<\/span><\/span>
\r◆<\/span>工作電源：<\/span>1.5V<\/span>、<\/span>300uA<\/span>
\r◆3<\/span>分鐘自動(dòng)關(guān)機(jī)<\/span><\/span>
\r◆<\/span>探頭長度：25cm<\/span><\/span>
\r◆<\/span>電纜總長：168 cm<\/span><\/span><\/span>
\r<\/span><\/strong>
\r六、儀器配置：<\/span><\/span><\/strong>
\r數(shù)據(jù)采集主機(jī)<\/span>QS-WT<\/span>、水分傳感器<\/span>QS<\/span>、溫度傳感器<\/span>QS<\/span>、充電器、手提箱、說明書、合格證、保修卡、<\/span>手提箱<\/span><\/span>
\r \r<\/p><\/div>}