多段式土壤溫濕度探頭

Model:CASM-101PF
‧精準量測區段土壤平均溫溼度,無須安裝多個裝置
‧溫度:-20~70℃
‧濕度:0~100%
‧輸出:SDI12、RS485(擇一)


CASM-101PF是一款多段式的土壤溫濕度探頭,其可使用單個探頭測量多個深度的體積含水量和土壤溫度。適用於敏感的農業區,以實現對灌溉的全面控制,提高用水效率,其運作原理為通過平均每段(15 mm)的體積含水量來連續測量整個探頭長度上的土壤溫濕度,而無須部屬多台裝置,且特殊的探頭設計使其無須挖掘土壤即可快速安裝,對於土壤層的破壞大大降低,並提供數位通訊輸出,便於後端延伸應用。

測量範圍

濕度:0~100% of VMC

溫度:-20~70℃

精度

濕度:±2.0% *

溫度:±0.5℃

輸出訊號

SDI-12, RS-485

接線

裸線(可選 4 pin,IP66/IP68 級環境連接器)

熱機時間

< 1 sec

輸入電壓

6 to 14 VDC max. 18 VDC

當前消耗

Quiescent: <0.5mA

Active: 15-20 mA (depending on number of segments) for 100 mS

操作溫度

-20°C to +70°C

儲存溫度

-40°C to 85°C

尺寸

每段長約 15 cm, 總長度是分段數乘以 15 cm

重量

詳請見型錄

標準電纜

5m

   

* 8% to 42% VMC, in controlled laboratory conditions; factory calibrated for most agricultural soils. In field applications, accuracy may slightly decrease due to the inevitable heterogeneity of soil texture, soil compaction, moisture and fluctuation in soil temperature. The accuracy may also decrease in difficult soil conditions (higher clay and salinity content). In normal conditions, our sensors will maintain their accuracy from permanent wilting through field capacity in sandy loam through clay soils with less than 60% clay particles. Under moderately saline conditions. Our sensors will maintain their accuracy up to 6 ds/m.