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Volumetric sensors measure the water content in the soil, providing information on the amount of water currently contained in the soil, including the not plant-available water. When interpreting volumetric readings, the soil type must be considered, and generally applicable optimum ranges are not available. Common units are Vol.% or mm water per liter or m³ of soil.

Advantages

  • Soil specific calibration possible
  • Information about the amount of water contained in the soil
  • very accurate measuring technique
  • immediate reaction to changing moisture conditions in the soil.
  • maintenance-free and frost-proof sensors

Functionality

We offer sensors and devices based on the measuring techniques TDR (Time Domain Reflectometry) and FDR (Frequency Domain Reflectometry).

Working Principle TDR

TDR (Time Domain Reflectometry) sensors determine the water content in the soil by measuring the dielectric properties of the soil by measuring the travel time of an electromagnetic pulse through conductors located in the soil. The speed at which the electromagnetic pulse propagates in the soil depends on its dielectric properties, and thus its water content. The measured value of the transit time is then automatically converted into volumetric soil water content.

Working Principle FDR

FDR (Frequency Domain Reflectometry) sensors measure the dielectric properties of the soil using typically two electrodes. The readout device "checks" returning electromagnetic waves for deviations in the frequency range and thus ultimately determines the water content in the soil.


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TDR Fieldscout 150

From 1,303.05‎€
Ex Tax: 1,095.00‎€

Mobile measuring device for water content and EC value

TDR Fieldscout 350

1,779.05‎€
Ex Tax: 1,495.00‎€

Mobile measuring device for water content and EC value

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SMT-50 Sensor

105.91‎€
Ex Tax: 89.00‎€

for vol. Water content and soil temperature with an analog volt signal

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SMT-100 Sensor

184.45‎€
Ex Tax: 155.00‎€

for vol. Water content and soil temperature with digital interface

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SM-100 FDR Sensor

From 129.71‎€
Ex Tax: 109.00‎€

FDR Sensor with Analog Volt Signal

EC-5 Sensor

260.02‎€
Ex Tax: 218.50‎€

FDR Sensor from Meter Group with analog Volt-Signal

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HS-10 Sensor

277.27‎€
Ex Tax: 233.00‎€

FDR Sensor from Meter Group with analog Volt-Signal

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Teros 10 Sensor

260.02‎€
Ex Tax: 218.50‎€

FDR sensor from Meter Group with analog Volt signal

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Teros 12 Sensor

518.25‎€
Ex Tax: 435.50‎€

Sensor for use in substrates from Meter Group with digital signal

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SMEC-300 Sensor

308.21‎€
Ex Tax: 259.00‎€

FDR Sensor for volumetric water content, temperature and conductivity with Analog Volt Signal

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Aquacheck Profile Probe

From 464.10‎€
Ex Tax: 390.00‎€

FDR profile probe for measuring soil water content and temperature at multiple depths.

EC-HH-Pro Handheld Meter

772.31‎€
Ex Tax: 649.00‎€

for Meter Group Sensors

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SM-HH Handheld reader

403.41‎€
Ex Tax: 339.00‎€

for the sensors SM-100 & SMEC-300

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