토양 (수분/염도/온도)

토양수분/전도도/온도센서

Hydra 정밀조사는 모래와 침니와 점토와 바로 동시 측정에 관련되어 진 양토 흙의 용량성의고 전도성이 있는 자산의 높은 빈도 전기 측정을 한다:

• Soil moisture
• Soil electrical conductivity
• Soil temperature

Hydra 정밀조사는 흙 표면 가까이에 같은 강한 흙 습기 경사가 있는 곳에 지역이 지역에(서)정확한 치수를 허락하는 것을 감지하면서 정확히 정의한다.응답 시간이 흙 습기 컨디션을 바꾸는 것에(게)즉각적이고 캘리브레이션을 필요로 하지 않는다.

Applications include:

• Weather / Climatological monitoring such as performed by the USDA NRCS National Water Climate Center
• Research studies
• Water shed management
• Agriculture irrigation monitoring and control
• Golf course greens (installations include major golf courses such as Augusta)
• Sports Turf
• Wine vineyards

Dielectric Constant : 1 to 65 where 1 = Air,78 = Distilled Water

+/- 1.5% or +/- 0.2 whichever is typically greater

Soil Moisture : From completely dry to fully saturated

+/- 0.03 water fraction by volume in typical soil

Conductivity : 0-20 dS/m +/- 2.0% or +/- 0.002 dS/m whichever is typically greater

Operating Temperature : In soils:freezing to +65 C ,Temperature range:-10 C to +65 C

Storage Temperature : -40 to +70 C

Water Resistance :Tolerates continuous full immersion

Size :Length – 4.9 inches (12.4 cm) ,Diameter – 1.6 inches (4.2 cm)

Sensing Volume (cylindrical region) : Diameter – 1.2 inches (3.0 cm) ,Length – 2.2 inches (5.7 cm)

Weight : 200 g not including cable (approx.0.08 kg/meter)

Ruggedness/Material

:Vibration and shock resistant withpotted components in PVC housingand stainless steel tines

Data Channel

:Four (4) 0-2.5 or 0-5 volt analog output signals.V1,V2 and V3 are used to determine the capacitive and conductive response,and hencewater content and salinity,of soil.V4 is soil temperature

Cable

:Seven (7) wire color-coded 18 AWGcopper wire,length up to 100 ft.UV resistant,direct burial

Power

: 7 to 30 volts DC,typically 20mA,40mA maximum