Hanna Instruments HI 98180 - Manual (Page 20)

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• Press CFM to confirm calibration.
• The instrument stores the calibration values and returns to normal mea-
surement mode.
FOUR, THREE or TWO-POINT CALIBRATION
• Proceed as described in “FIVE-POINT CALIBRATION” section.
• Press CAL or ESC after the appropriate accepted calibration point. The instru-
ments will return to measurement mode and will memorize the calibration data.
ONE-POINT CALIBRATION
Two SETUP selectable options are available for one-point calibration:
Replace and Offset.
If the
Replace option is selected, the slopes between current buffer and
nearest lower and higher buffers will be reevaluated.
If the “Offset” option is selected, an electrode offset correction is performed
keeping unchanged the existing slopes.
• Proceed as described in “FIVE-POINT CALIBRATION” section.
• Press
CAL or ESC after the first calibration point was confirmed. The
instruments will memorize the one-point calibration data and will
return to measurement mode.
Notes: • Press MTC or MODE key to toggle between pH buffer selection and
the temperature reading during calibration while temperature
probe is not connected (MTCmode)
• The displayed arrow is moving to the temperature value. Use
ARROW keys in order to change the temperature.