SM300

• Product of

  Delta-T Devices

  Soil moisture sensor

  The soil moisture sensor SM300 has an integrated temperature sensor and measures the volumetric soil moisture with an absoluteaccuracy of ±2.5 %. Influence on the soil is low as there sult of the sensor geometry. The probe also guarantees a very accurate measurement even with higher salinity and works in a very temperature-stable manner.

• Advantages

  • Soil moisture and temperature
  • High absolute accuracy
  • High temperature and salinitystability
  • Simple connection to the datalogger (0-1 V)

• Technical data

  • Measurement range for watercontent:	0..50% volumetric water content(full accuracy up to ±2.5, thereafter reducedaccuracy)
  •Resolution [vol% water content]for conductivity range [dS/m]:	0 ... 6	6 ... 12	12 ... 50
  Water content 0 ... 40%	±1 %	±2 %	with soilspecific calibration possible
  Water content 40 ... 70%	±2 %	±3 %
  • Conductivity range:	50 - 500 mSm-1
  • Measurement range for temperature::	0 ... +40 °C
  • Measurement accuracy of temperature:	±0,5 °C