17
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 96750-11
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.