ēKo Pro Series User’s Manual
Page
97
Doc. # 7430-0710-01 Rev. C
If temperature rises or falls in a closed system, the saturation vapor pressure will increase or
decrease. As a consequence, the relative humidity will drop or rise.
The dew point is defined as the temperature at which the present amount of humidity in the air
starts to condensate. It can be calculated by using relative humidity and temperature as inputs.
Figure 8-3 shows the sensor accuracy chart.
Figure 8-3. Relative Humidity, Temperature and Dew point accuracies
For the theory of operation and installation tips for the other sensors, refer to the sensor vendor’s
manuals provided with the sensor package.
8.3 eS1110 soil water content sensor
The eS1110 uses the Decagon EC-5 which obtains volumetric water content by measuring the
dielectric constant of the media through the utilization of capacitance/ frequency domain
technology. It incorporates a high frequency oscillation which allows the sensor to accurately
measure soil moisture in any soil with minimal salinity and textural effects.
