19
Rev. 1 20.12.2019
EN
P1.8 Reset of pH parameter
If the instrument does not work perfectly or incorrect settings have been made, confirm YES with
to
return all the parameters of the pH menu to the default settings.
IMPORTANT: The factory reset of the parameters DOES NOT erase the stored data.
P1.9 Temperature calibration
All the instruments in these series are pre-calibrated for a correct temperature reading. However, if there is
a difference between the measured and the real one (usually due to a probe malfunction) it is possible to
perform an offset adjustment of + 5°C.
Use the buttons
and
to correct the temperature offset value and confirm with
.
Automatic pH calibration
Example: three-point calibration with USA type buffer (7.00 / 4.01 / 10.01).
In pH measurement mode
press
to enter calibration mode.
The string “1ST POINT PH 7.00” appears on the display; the device requires the neutral value as the first
calibration point.
Rinse the electrode with distilled water and gently dab with absorbent paper. Dip the electrode in the
pH 7.00 solution.
When the signal is stable, the red bands are replaced by the stability icon
.
Press
as indicated by “PRESS OK”.
The measured value flashes on the display and then the icon of the pH
7.00 beaker appears at the bottom left
indicating that the instrument
is calibrated on the neutral point.
Remove the electrode, rinse with distilled water and dab gently with absorbent paper. Dip the sensor
in the pH 4.01 buffer solution (“CHANGE BUFFER”).
The instrument is now ready to recognize the second calibration point.
Alongside the string “2ND POINT pH” the different pads that the device can recognize automatically
scroll.
When the 4.01 value is recognized and the icon
appears; press
as indicated by the string
“PRESS OK”.
The actual measured value and the Slope% flash on the display; subsequently the icon of the beaker pH
4.01
appears next to the green beaker, indicating that the instrument is calibrated in the acid field.
Remove the electrode, rinse with distilled water and dab gently with absorbent paper. Dip the sensor
in the pH 10.01 buffer solution (“CHANGE BUFFER”).
The instrument is now ready to recognize the third calibration point.
Alongside the string “3RD POINT PH” the different pads that the device can recognize automatically
scroll.
When the value 10.01 is recognized and the icon
appears, press
as indicated by the string
“PRESS OK”.
