TDR soil probe

TDR SalinityThe most advanced and precise Time Domain Reflectometry (TDR) probe available for scientists and engineers. The FP/MTS Field TDR Probe is designed to measure soil volumetric water content, temperature and electrical conductivity (EC/salinity) simultaneously.

The FP/MTS is ideally suited to the field but it can also be deployed in laboratory, soil columns, and glasshouse projects.

related products
  • Time Domain Reflectometry SensorMeasurement of soil moisture, bulk electrical conductivity and temperature
  • Applicable for field use or monitoring purposes
  • Variable length probes are available for easy field installation and maintenance.
feature specification
Measurement Principle Time Domain Reflectometry (TDR)
Sensor Dimensions 2 parallel stainless steel rods | 100mm Length | 2mm Diameter spaced 14mm apart (smaller probes available upon request)
Cable Length 1.5m (standard) | Up to 6m (optional)
Measurement Range
Soil Volumetric Water Content 0 to 100 %
Temperature -20 to 50 °C
Electrical Conductivity/Salinity 0 to 1 S/m
Measurement Accuracy
Soil Volumetric Water Content ± 2% or less with soil specific calibration
Temperature ± 0.5 °C
Electrical Conductivity/Salinity ± 10%
Measurement Resolution
Soil Volumetric Water Content 0.1 %
Temperature 0.1 °C
Electrical Conductivity/Salinity 1 mS m-1
further information