Soil Moisture Sensors

Low soil moisture levels can negatively impact photosynthesis. Extended periods of water scarcity may cause crops to wither and eventually die due to the limited availability of water and air in soil pores. In dry conditions, the cohesive forces created by soil compaction can place stress on plant roots, causing them to break and leading to plant death. On the other hand, excessive moisture decreases the air content in the soil, hindering root respiration. This can result in root rot and, in severe cases, plant death.

Soil moisture sensors can be used to monitor moisture levels in the soil. By analyzing the data, farmers can make timely decisions about irrigation, ensuring optimal moisture conditions for crop growth.

Product Line

MODEL 470

Model EC - 5

This Soil Moisture sensor can be used in any soil type and soils with varying degrees of EC (up to 8 dS/m).

Features:

  • Measuring Range: 0-100% desaturation (VWC).
  • Accuracy : ±3%
  • Sensor length: 5 m length cable
  • Resolution: 5 cm
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Model 567

SM150T Soil Moisture Sensor

The SM150T measures soil moisture and temperature with research-grade accuracy. It offers stable, robust and reliable performance at a great price. Its advanced patented electronics and tough build produce a highly reliable soil moisture sensor with exceptional salinity and temperature stability. The sensor is engineered to withstand long term burial – the sensor, connectors and cable are all environmentally protected to IP68. 

Specifications: 

  • Measurement: Volumetric water content and soil temperature
  • Accuracy: ± 0.03 m3.m-3 (3%) – With soil-specific calibration
  • Soil moisture measurement range: Full accuracy over: 0 to 0.7 m3.m-3, Full range : 0 to 1.0 m3.m-3
  • Salinity range: 50 to 500 mS.m-1
  • Salinity errors: < 0.035 m3.m-3 from 0.05 to 0.4 m3.m-3. Can be calibrated up to 2000 mS.m-1
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Model 730

ML3 ThetaProbe Soil Moisture Sensor

With the ML3 ThetaProbe Soil Moisture Sensor it’s easy to make reliable, accurate soil moisture measurements. Simply insert the soil moisture probe into the soil, connect to your data logger or readout unit, provide 5-14 V DC at 18 mA, and within seconds you can be logging soil moisture. It is a robust, buriable and maintenance free (environmentally protected to IP68) sensor that can be easily installed at depth into augered holes using the optional extension tubes.

Specifications:

  • Measurement: Volumetric water content and soil temperature
  • Accuracy: ± 0.01 m3.m-3 (1%) – With soil-specific calibration
  • Soil moisture measurement range: Full accuracy over 0 to 0.5 m3.m-3
  • Full range : 0 to 1.0 m3.m-3
  • Salinity range: 50 to 500 mS.m-1
  • Salinity errors: < 0.035 m3.m-3 from 0.05 to 0.4 m3.m-3. 
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