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Two-point calibration
Proceed with steps 1 through 3 under single point
calibration using 7.01 (pH 6.86 for NIST) pH buffer
first. Then follow steps below:
The "pH 3.00 USE" message is then displayed.
Place the probe in the second calibration buffer (pH 3.00
or 10.01, or, if using NIST, pH 3.00 or 9.18). When the
second buffer is accepted, the LCD will display "SAVE"
for 1 second and the meter will return to the normal
measurement mode.
If the buffer is not recognized or the slope is out of accepted
range "--- WRONG" is displayed. Change the buffer, clean
the electrode or press any key to exit calibration.
It is always recommended to carry out a two‑point
calibration for better accuracy.
When the calibration procedure is completed, the
tag
is turned on together with the calibrated points.
To exit calibration and reset default values
After entering the calibration mode and before the first point
is accepted, it is possible to quit the procedure and return
to the last calibration data by pressing the
button. The
LCD displays "ESC" for 1 second and the meter returns to
normal mode.
To reset the default values and clear a previous calibration,
press the SET button after entering the calibration mode
and before the first point is accepted.
The LCD displays "CLEAR" for 1 second, the meter resets to
the default calibration and the
tag with the calibrated
points on the LCD disappears.
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