Digital True TDR-310N Soil Moisture Sensor (SDI-12) - Product Overview

User 's Manual

A fully integrated digital TDR soil moisture sensor (also known as soil moisture sensor, probe or instrument) with high accuracy and repeatability.

Measurement Functions:

Volumetric Water Content: 0% to 100%

Medium Permittivity: 1 to 100

Medium Bulk Electrical Conductivity: 0 to 6000 μS/cm

Medium temperature: - 40 ℃ to+55 ℃

Pore Water EC (Hilhorst Model): 0 to 55000 μS/cm

Features：

1. SDI-12 Interface

2. 3-element 10 cm stainless steel waveguide

3. 5 m 3-conductor waterproof cable (standard)

4. Waterproof Epoxy-filled Housing

5. 20% to 80% Incident Wave Rise Time: 300 ps

6. Waveform Digitizing Resolution: 5 ps

7. Incident Wave Amplitude: 2.3 V

Main advantages：

Precise and effective

The TDR-310N is a replacement to the former Acclima TDR-310L. It has a high voltage waveform output, which makes it effective in taking measurements when the soil electrical conductivity is high. It also consumes more power than the TDR-310H.It is a complete integrated time domain reflectometer that combines 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.

Data compatibility

Its form factor is designed for easy vertical installation in an augured 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.