18
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
CALIBRATION PROCEDURE
• Turn the meter on by pressing ON/OFF.
When the LCD displays “----”, the meter is ready.
On the secondary LCD “P1” or “P2” will appear,
indicating that the free or total chlorine parameter
is selected. The display code that appears is the
one of the last selected parameter.
• Select the parameter program for Free Chlorine
“P1”, or Total Chlorine “P2”, by pressing UP or
DOWN keys.
• Place the specific CAL CHECK™ Standard Cuvet
B
into the holder:
Free Chlorine
Total Chlorine
B, HI 95701-11
B, HI 95711-11
Ensure that the notch on the cap is positioned
securely into the groove.
• Press CAL CHECK and “----” will blink during
measurement.
• Wait for a few seconds and the display will show
the validation standard value.
Note
: It is possible to interrupt the calibration procedure by pressing CAL CHECK or ON/OFF.
Warning:
Do not validate or calibrate the instrument with standard solutions other than Hanna CAL
CHECK™ Standards, otherwise erroneous results will be obtained. For accurate validation
and calibration please perform test at room temperature, 18 to 25°C (64.5 to 77.0°F).
Note
: The reading should be within specifications as reported on the CAL CHECK™ Standard Certificate.
If the value is found out of specifications, please check that the cuvets are free of fingerprints, oil
or dirt and repeat validation. If results are still out of specifications, then recalibrate the
instrument.
or
