21
CALIBRATION PROCEDURE
Note: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK or
ON/OFF keys.
Warning: Do not calibrate the instrument with standard solutions other than the HANNA CAL
CHECK
TM
Standards, otherwise erroneous results will be obtained.
When calibrating, only the selected range is affected.
• Turn the meter on by pressing ON/OFF.
When the beeper sounds briefly and the
LCD displays dashes, the meter is ready.
• Press and hold CAL CHECK for three
seconds to enter
calibration mode
. The
display will show “CAL” during
calibration procedure. The blinking
“ZERO” asks for instrument zeroing.
• Place the CAL CHECK
TM
Standard
HI 96710-11 Cuvette A into the cuvette
holder and ensure that the notch on the
cap is positioned securely into the groove.
• Press ZERO/CFM and the lamp, cuvette
and detector icons will appear on the
display, depending on the measurement
phase.
• After a few seconds the display will show
“-0.0-”. The meter is now zeroed and
ready for calibration. The blinking
“READ” asks for reading calibration
standard.
• Remove the cuvette.
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