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10HS Soil Moisture Sensor

Decagon Sensor Measuring Soil Water Content with 12-Bit A/D Converter

Soil Moisture Sensor>> Measures a 1-liter Volume of Soil for More Accurate Picture of Average Soil Moisture
>> Sensor Uses a High Frequency Circuit for Accuracy Even in High Salinity and Sandy Soils
>> 3% Accuracy in Most Soil Conditions and 2% with Soil Specific Calibration
>> 0 to 0.570 m3/m3 (Volumetric Water Content) Measurement Range
>> 5 Meter Cable Length with Stripped and Tinned Wire Leads
>> Compatible with any Data Acquisition System Capable of 3 to 15 Volts DC Excitation and Single Ended Voltage Measurement at 12 Bit Resolution

This Sensor is NO Longer Avaialble!

Compatible with
>> TandD Voltage Logger (#RVR-52)

NOTE: Large Quantity Discounts Are Available!

  • Installation Tips
  • Specifications
  • Documentation

Installation Tips

  1. If you can, install the sensors the day after a good rain. It's always easier to install sensors into undisturbed soil when the soil is slightly moist
  2. Use a 1/2 inch (1.27cm) notched PVC pipe to push the sensor into the bottom of a deep augered hole
  3. Run the cables through a PVC pipe from just below the surface to the data logger to prevent rodent damage
  4. If you need to remove the data logger from your field area (for planting or harvesting purposes, for example), install an underground valve box to store the cables until you can put the logger out again. This also makes the sensors easier to find
  5. Work with instrumentation in the lab before going out to install sensors


Measurement Range 0 to 0.570 m3/m3 (Volumetric Water Content)
Accuracy 0 to 50°C: ±0.033 m3/m3 (±3.0%) typical for mineral soils up to 10 dS/m
Soil Specific Calibration: ±0.020 m3/m3 (±2.0%)
Resolution ±0.0008 m3/m3 (±0.08%)
Operating Range Temperature: 0 to 50°C (32°F to 122°F)
Note: Extended Temperature Outside Range will Decrease Logger Battery Life and is Outside the Sensor's Accurate Measurement Range
Volume of Influence 1 Liter (33.81 oz)
Sensor Frequency 70 MHz
Measurement Time 10mS
Sensor Type Frequency Domain
Output Voltage Correlated with Volumetric Water Content
Independent of Excitation Voltage
Bits per Sample 12
Number of Channels 1
Power 3 Volts DC @ 12mA to 15 Volts DC @ 15mA
Cable Connector Types Stripped and Tinned Lead Wires (3)
Data Logger Compatibility Logger Capable of 3 to 15 Volts DC Excitation and Single Ended Voltage Measurement at 12 bit or Better Resolution
Dimensions Soil Probe: 145 mm x 33 mm x 7 mm (6.5" x 1.25" x 0.08")
Cable Length: 5 Meters (16 ft)
Length of Sensor Network Cable: 0.5 Meter (1.6 ft)
Weight 190 grams (6.7 oz.)