The Chameleon Card is used with Chameleon Soil Water Sensors and reads soil moisture.
The sensors measure how hard it is for a plant to suck water out of the soil.
Sensors can be installed:
|Sensor wire is not connected
|Battery needs replacing
Each batch of sensors is tested in the laboratory before the sale to check the colours change at the correct soil moisture. Sensors give accurate readings for two to four years, depending on soil conditions.
The accuracy/lifespan can be shorter in very wet or salty conditions and where sensors are placed at shallow depth directly under drip emitters, where the calcium sulphate will outer casing will dissolve more rapidly.
If your sensor fails to turn blue after irrigation when it normally does, its time to replace it.
The battery should last for 1000 readings. When the LED flashes red, the battery needs to be replaced.
Battery type: disposable CR2032 watch battery
The sensor contains an inner core comprising a material with unique hydraulic properties, surrounded by a shell of calcium sulphate to buffer against changes in the salinity of the soil.
The sensor measures how hard it is for a plant to suck water out of the soil and has the same meaning for all soil types.
For more information about the Chameleon and how to interpret the data, see FAQ https://via.farm/faq/
For more information about the Virtual Irrigation academy, see https://via.farm/