Soil Moisture, Temperature, and Electrical Conductivity 5TM, 5TE (for LoRaWAN™ technology)

Soil sensor 5TE-canvas.jpg
Soil sensor 5TE-canvas.jpg

Soil Moisture, Temperature, and Electrical Conductivity 5TM, 5TE (for LoRaWAN™ technology)


LoRaWAN compatible sensor device

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5TM/5TE Ruggedized Soil Moisture, Temperature and EC (only 5TE)

Soil moisture, temperature, and electrical conductivity

The 5TE monitors bulk electrical conductivity (EC), in addition to volumetric water content (VWC) and soil temperature.

Monitor salt levels

The 5TE enables users to measure the EC response to salts and fertilizers in the soil. EC Measurements require good contact between the stainless steel electrodes on the sensor, and the soil. In potting soil and soilless medias, we recommend using the GS3 to maintian good soil contact and compensate for air gaps in the substrate.

Engineered for accuracy

The 5TE determines VWC by measuring the dielectric constant of the media using capacitance/frequency domain technology. The sensor uses a 70 MHz frequency, which minimizes salinity and textural effects, making the 5TE accurate in most soils. The 5TE measures temperature with an onboard thermistor, and electrical conductivity using a stainless steel electrode array. VWC in mineral soils is calculated using the Topp equation; other calibrations are provided on request. Temperature and electrical conductivity are factory calibrated for all soil types.

Apparent Dielectric Permittity (εa)
Accuracy: ± 1 εa (unitless) from 1 - 40 (soil range), ±
15% from 40 – 80
Resoluton: 0.1 εa (unitless) from 1 - 20, < 0.75 εa
(unitless) from 20 – 80
Range: 1 (air) to 80 (water)

Soil Volumetric Water Content (VWC)
Accuracy: Using Topp equaton: ± 0.03 m3/m3 (± 3%
VWC) typical in mineral soils that hate soluton
electrical conducttity < 10 dS/m; using medium
specifc calibraton, ± 0.01 - 0.02 m3/m3 (± 1 - 2%
VWC) in any porous medium
Resoluton: 0.0008 m3/m3 (0.8% VWC) from 0 to
50% VWC

Electrical Conducttity (EC), only with 5TE
Accuracy: ± 10% from 0 to 7 dS/m, user calibraton
required abote 7 dS/m
Resoluton: 0.01 dS/m from 0 to 7 dS/m, 0.05 dS/m
from 7 to 23.1 dS/m
Range: 0 - 23 dS/m (bulk)

Soil temperature
Accuracy: ± 1 °C
Resoluton: 0.1 °C
Range: -40 ° to 60 °C