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0
ATC
CAL
pH
C
ATC
Press the
ARROW
keys to select a different buffer value, if necessary.
When the reading is stable and close to the selected buffer, the
CFM
tag will blink and if enabled, an audible signal will sound.
Press the
CFM
key to confirm the calibration. The instrument will ask for a
second calibration buffer and display the measured pH on the first LCD line
and the second calibration buffer on the second LCD line.
If necessary, press the
ARROW
keys to select a different buffer value.
Note:
The instrument will automatically skip the buffer used for the first point.
It also skips 6.86 if 7.01 was used, and vice versa. Likewise, it will skip
9.18 if 10.01 has been used, and vice versa.
Rinse the electrode in one of the beakers of the second buffer solution, then
immerse the pH electrode and the temperature probe approximately 4 cm
(1½) into the second buffer solution and stir gently. The temperature
probe should be close to the pH electrode.
The indication will blink on LCD until the reading has stabilized.
When the reading is stable and close to the selected buffer, the
CFM
tag will blink.
Press the
CFM
key to confirm the calibration.
The instrument will return to normal operation and will memorize the calibra-
tion data.
Note:
Press the
RANGE
key any time during calibration to display the
temperature reading.
ONE-POINT CALIBRATION
Proceed as described in two-point calibration.
Press the
CAL
key after the first calibration point has been confirmed.
The instrument will return to normal operation and will memorize the one-
point calibration data.
ATC
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