20
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 Instruments
CAL Check
TM
Standards, otherwise erroneous results will be obtained.
For accurate validation, please
perform test at room temperature: 18 to 25 °C (64.5 to 77.0 °F)
• 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.
CALIBRA
TION PROCEDURE
• Place the
CAL Check
TM
Standard
HI96739‑11
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.
HI9673
9
HI96739
3"
