TDR-310SandLike TDR-315L, it is a true waveform digital time domain reflectometer that can derive soil dielectric constant and moisture content based on the propagation time of electromagnetic pulses transmitted along its waveguide. TDR-310S and itsSimilar products (such asTDR-315L）Exquisite design, precise measurement, and high cost-effectiveness. Compared to traditionalTDRCompared to other products (such asTDR100 Time Domain Reflectometer System), TDR-310SandTDR-315L is already contained within the small sensor bodyA super fast rising time step function generator, a waveform digital converter（200 GSPS and a picosecond resolution time base (5ps)It no longer requires large and complex system console components, eliminates bandwidth limited coaxial cables, and reduces90-97% of the equipment cost can be said to be, TDR-310Sas well asTDR-315LThis typeThe "TrueTDR" probe is a huge innovation in TDR soil water measurement equipment.

Additionally, due to TDR-310SandTDR-315LIt is a true time-domain device（TrueTDR）， Their readings are not derived from the amplitude and relationship of current and voltage, so they are not affected by soil conductivity and compaction. TDR-310SandTDR-315L uses the standard SDI-12 interface, which is almost compatible with allhaveSDI-12 communication function data collector or recorder is very suitable for system integration.

Main technical parameters:

Soil volumetric water content（VWC）Range:0-100%

Soil volumetric water content（VWC）Accuracy:2%(Additional explanation:2% is a typical report accuracy; The accuracy depends on the soil type;equalBulk EC is between 0-4000 µ S/cmWhen the accuracy change is less than1%; changing VWC through compaction only follows changes in soil volume)

Soil volumetric water content（VWC) Resolution: 0.1%

Soil temperature range:-40~+60℃

Soil temperature accuracy:± 0.2 ℃ (typical; extreme environments with high or low temperatures may reach ± 0.3 ℃)

Soil temperature resolution:0.1℃

Soil conductivity range: 0~5000 µ S/cm

Soil conductivity accuracy:±25 µS/cm（0 ~1000 µS/cm）, ±2.5%（1000 µS/cm~ 6000 µS/cm）

Dielectric constant range: 1~80

Dielectric constant accuracy:±1%

Dielectric constant resolution:0.1

Response time: 0.7 seconds

Power supply:6～15V DC
Standby current:<35 μA
Working current:100 mA
Signal output:SDI-12
Probe length:10cm

Manufacturer: United StatesAcclima