Acclima Digital True TDR-310H Soil Moisture Sensor (SDI-12)

TDR310H Acclima Sensor

Product Summary

$322 – $331

The TDR-310H is one of Acclima’s H-series sensors, which are very low power and suited perfectly for power-conscious applications. Being part of the Soil Smart Series means that it’s advanced waveform analysis works with all mineral soil types. It is a complete integrated time domain reflectometer that combines ultra-fast waveform generating and digitizing functions with a precision 5 pico-second resolution time base and highly sophisticated waveform digitizing and analyzing firmware that provides true time domain analysis of soil-propagated waveforms.

Its form factor is designed for easy vertical installation in an augered hole using a 34 mm flat-bottomed auger. It mates with a 1” schedule 40 PVC pipe that acts as a handle in its installation to any desired depth. It provides reading data through a 3-wire SDI-12 interface and is compatible with any data recorder that is compliant with SDI-12 version 1.4 and earlier.

Key Features

  • Ultra-low power consumption and fast response time
  • Housing designed for easy bore hole installation at any depth
  • Soil Smart analysis works with all mineral soil types
  • Incident Wave Amplitude: 400mV
  • 20% to 80% Incident Wave Rise Time: 150 ps
  • Waveform Digitizing Resolution: 5 ps
  • SDI-12 Interface
  • 3-element 10cm stainless steel waveguide
  • 5m or 10m 3-conductor waterproof cable (standard)
  • Waterproof Epoxy-filled Housing

Measurement Functions

  • Volumetric Water Content: 0% to 100%
  • Medium Permittivity: 1 to 80
  • Medium Bulk Electrical Conductivity: 0 to 2000 µS/cm
  • Medium Temperature: -40 to +55 degrees C
  • Pore Water EC (Hilhorst Model): 0 to 55000 µS/cm


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