5TE soil moisture temperature conductivity sensor

        The 5TE can determine soil moisture content, conductivity, and temperature with an oscillating frequency of 70MHz. The water content is determined by measuring the dielectric constant of the soil. The thermistor at the base of the triforked probe measures the soil temperature, and the conductivity is measured by screws in the middle of the surface of two of the probes.        

        In 2006, Decagon developed the 5TE by combining EC-5 and ECH2O-TE. Using the same theoretical basis as ECH2O-TE, 5TE can also measure soil moisture content, conductivity and temperature at the same time. The difference is that the 5TE uses stainless steel screws to determine the conductivity, while the ECH2O-TE uses gold-plated wire. In contrast, the 5TE is designed to be more robust and corrosion-resistant. In addition, 5TE uses a 5-point calibration of the dielectric constant, which is more accurate than the ECH2O-TE.

Product specification

• Output: DDI serial port or SDI-12
• Working environment: -40~60℃
• Cable length: standard 5m; Other lengths can be customized, up to 75m
• Interface type: 3.5mm stereo interface or 3-head tinned bare wire
• Size: 10.9×3.4×1.0cm
• Probe length: 5cm
• Power supply voltage (VCC to GND) : minimum 3.6VDC, typical NA, maximum 15.0VDC
• Digital input voltage: high logic: minimum 2.8V, maximum 3.9V, typical 3.0V; Low logic: minimum -0.3V, maximum 0.8V typical 0.0V
• Power line conversion rate: minimum 1.0V/ms
• Current consumption: Measurement period: min. 0.5mA, Max. 10.0mA, typical 3.0mA; During dormancy: typical 0.03mA
• Start time: DDI Serial port: maximum 100ms; SDI-12: Minimum 100ms, maximum 200ms, typical 150ms
• Measurement time: typical 150ms, maximum 200ms Start time: DDI serial port maximum 100ms; SDI-12 interface: Minimum 100ms, maximum 200ms, typical 150ms
• Apparent dielectric constant
  • Range: 1 to 80
  • Accuracy: ±1εa
• Soil volumetric water content
  • Range :0 to 1
  • Resolution :0.0008
  • Accuracy: 0.03
  • Sensor type: frequency domain
• Electrical conductivity
  • Range: 0 to 23dS/m
  • Resolution: 0.01dS /m
  • Accuracy: ±10%
  • Sensor type: two-pin design
• Temperature
  • Range: -40 to 60 ° C
  • Resolution :0.1℃
  • Accuracy: ±1℃
  • Sensor type: Thermistor