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6. Calibration
The sensor calibration is performed initially with the aid of a water bucket. The fine calibration can be
performed later, when the sensor system is hanging in the rainwater tank and the minimum and
maximum water levels actually exist.
Important: Calibrate the 0% point first, before calibrating the 100% rainwater-level indicator.
Submerge the sensor cable in water up to the 0% mark, at which point the cable should be stretched to
its full length. Then press the lower, submerged 0% calibration button (using a pen, etc.). The value has
been read when the display flashes briefly. The 100% calibration is performed similarly: Submerge the
sensor cable up to the 100% mark and then press the upper 100% calibration button.
