Acclima Digital True Tdr-310w Soil Moisture Sensor

The TDR-310W is a modification to the Acclima TDR-315N. Its shorter rods allow it fit in standard rockwool blocks. 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 shallower horizontal installations where it is forced into the sidewall of a trench that has been dug to the desired measurement depth.

A probe guide is provided to ensure that the waveguide rods are parallel when pushing them into the soil.

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

• Designed for easy use with rockwool blocks and smaller grow media
• Large sampling volume with the wide spacing of the 10cm waveguides
• Soil Smart analysis optimized for non-mineral soil types, while still works well in mineral soils
• SDI-12 Interface
• 3-element 10 cm stainless steel waveguide
• 5 m 3-conductor waterproof cable (standard)
• Waterproof Epoxy-filled Housing
• 20% to 80% Incident Wave Rise Time: 300 ps
• Waveform Digitizing Resolution: 5 ps
• Incident Wave Amplitude: 2.3 V

Measurement Functions

• Volumetric Water Content: 0% to 100%
• Medium Permittivity: 1 to 85
• Medium Bulk Electrical Conductivity: 0 to 4500 µS/cm
• Medium Temperature: -40 to +55 degrees C
• Pore Water EC (Hilhorst Model): 0 to 55000 µS/cm