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The way to connect the modular analog interface that can read up to 64 analog sensors is described by
the following drawing. The interface utilizes special RTUs that can read 8 analog sensors each. Here
again the interface can be plugged into the mother board or installed externally.
5.5 Interface pH/EC (Fertmaster)
When the system is required to measure/control the pH (acidity)
and the EC (Electro Conductivity) of the water, a special
interface will be used. Apart from reading the analog values of
the pH and EC electrodes, the pH/EC interface is capable of
handling 6 injectors of fertilizers and a booster pump; it is
equipped with a display and a key board which enable
calibrations, parameters setting and monitoring to be done
directly at the interface. During the injection process, it receives
from the DREAM 2 controller all the details and the
requirements of the particular process and it executes the
injection accordingly. All along the injection process, the DREAM
2 is updated continuously about the status and the results.
pH/EC interface FERTMASTER
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