10
• When the buffer value is recognized and the
reading is stable, an acoustic signal (if enabled)
advises the user, the “pH” symbol stops flash-
ing, the hourglass indicator disappears and the
“CFM” tag starts blinking to indicate that the
value can be confirmed.
• Press CFM to store the first calibration point.
• The meter expects a pH 4.01 or 10.01 buffer.
• Rinse and immerse the pH electrode and the
temperature probe in pH 4.01 or pH 10.01
buffer (2
nd
calibration point) and stir gently.
• When the buffer value is recognized and the
reading is stable, an acoustic signal (if enabled)
advises the user, the “pH” symbol stops flash-
ing, the hourglass indicator disappears and the
“CFM” tag starts blinking to indicate that the
value can be confirmed.
• Press CFM to store the second calibration point.
• The meter returns to normal mode.
The pH calibration is now complete; “CAL” and
the pH tags corresponding to the buffers used for
calibration are lit on the LCD.
Notes:
• If the buffer value is not recognized, after 12 seconds the meter will display
blinking dashes together with the “WRONG”
tag. Either the buffer solution is wrong or out
of specification and needs to be replaced or the
electrode is damaged.
• The meter will retain the calibration if the battery is removed.
• To quit calibration and keep previous data: press CAL after entering the
calibration mode and before the first point is accepted.
• To perform a single-point calibration: press CAL after the first point has been
confirmed.
If the temperature probe is not connected and manual temperature compensation
is required, follow the procedure below:
• Press RANGE to select the temperature mode.
• Rinse the pH electrode and place it into the pH 7.01 buffer, stir briefly and
wait a few minutes to reach thermal equilibrium.
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