ProMinent DULCOTROL DWCa Assembly And Operating Instructions Manual page 118

Calibrating the compact controller for inductive conductivity
118
CAL ZERO
ZERO = 373.793 µS
CAL=OLD
Fig. 82: Display of incorrect calibration.
8. In the event of incorrect calibration, press
calibration value and press
ERR
OK=RESET
A1945
to retain the old
to use the factory settings.