Acclima Digital True TDR-310H Soil Moisture Sensor

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