User Guide

10
CALIBRATION
If repeated measurements differ more than an acceptable value, check if the meter
calibration status by measuring a standard solution.
Anyway, it is recommended to perform a monthly calibration of the meter, or more
frequently for greatest accuracy.
To check the date of last calibration, simply press the GLP/CAL key. Press again to
toggle between date and time.
CALIBRATION PROCEDURE
• Turn the meter on and wait for the display to show
dashes “----”.
• Press ALT+CAL keys, the “CAL” message will blink on the display 3 times, then
the meter enter the calibration mode asking for the 0 EBC standard.
• Fill the measurement cuvette with C124-0 stan-
dard (@ 0 EBC).
Note: In order to minimize any error introduced by the cuvette, it is recommended
to use the same cuvette during calibration and for measurements.
• Insert the cuvette with the 0 EBC standard solution (or turbidity-free dilution
water) into the measurement cell and press the CAL key. “SIP” and “CL” will
start blinking.
• After approximately 30 seconds the instrument
will ask for the 2.5 EBC standard solution.
• Repeat the same procedure with C124-1 standard solution (@ 2.5 EBC): fill
the cuvette the C124-1 standard, insert into the measurement cell and press
the CAL key again.