In water-limited areas, salt management is a serious concern. In these areas, monitoring salt levels can be as important as monitoring soil moisture. The 5TE allows you to measure salt levels through bulk electrical conductivity.
EC measurements require good contact between the stainless steel electrodes on the sensor, and the soil. Because of large air spaces in potting soil and soilless media, the 5TE cannot be used accurately in potting soils or soilless substrates. However, the new GS3 Soil Moisture, Temperature, and EC sensor is designed specifically for use in these media.
Engineered for Accuracy
The 5TE makes all three measurements (volumetric water content, temperature, and EC) independantly. Like all ECH2O sensors, the 5TE determines volumetric water content (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.
The 5TE's small size makes it easy to install--perfect in field installations. This robust probe should be pushed directly into undisturbed soil to ensure good accuracy.
Integrate with Campbell Scientific Data Loggers
Each 5TE comes standard with serial and SDI-12 communication options, meaning easy integration with systems manufactured by other companies (such as Campbell Scientific).