This soil moisture station has 2 analog ports (ADC0 and ADC1) to which, in this case, a WaterScout SMEC300 soil moisture sensor and a Watermark soil moisture sensor are connected. The WaterScout SMEC300 measures not only soil moisture percentage but also soil EC and soil temperature. The soil moisture content is displayed by the WaterScout SMEC300 as a percentage of the soil volume. This is in contrast to the WaterMark sensor, which actually measures soil suction. Soil suction is expressed in kPa (Kilo Pascals) and corresponds to the amount of force the plant needs to exert to extract water from the soil. In some cases, it is interesting to compare the relationship between the amount of water in the soil and the amount of energy the plant needs to invest in extracting this water. In this model, the sensors are typically placed at the same depth (midway in the root zone) in the soil.
Features:
- 2 Analog ports in use for WaterScout Soil Moisture Sensors
- 2 available digital (I²C) ports for optional temperature/humidity sensors
- Battery-powered (1 x SAFT LS-17500 Lithium-Ion 3.6Volt) Battery life up to 18 months (depending on interval)
- Communication module: LoRaWAN™ Spreading factor: 12 frequency: 868MHz
- Range (across the Netherlands via the nationwide LoRa network provided by KPN)
- Range (with private gateway up to approximately 10 Km)