Innowater pH BASIC Operating Manual page 7

The value on the right indicates the buffer solution we are using. You can adjust
this value using the arrows to adapt it to the temperature and the sample used.
Insert the probe in the 4 pH buffer calibration, remove it slightly with the probe
and wait for a stable reading value to be reached.
Once the reading value has stabilized press OK key to save calibration and exit the
sub-menu.
Next, remove probe the probe from the pH4 buffer solution, rinse its bottom with
clean water and shake gently to remove an excess of water.
Repeat the procedure above with the pH7 buffer solution and submenu "3 Cal pH
7"
Note: During calibration, if value measured by the probe (Lec), differs in more
than 2 units from the theoretical of the buffer solution (pH4 and pH7), data
calibration won´t be saved and it will go back to factory values.
For example, if the reading value (Lec) is 6,05 while calibrating with pH4 solution.
1.4. Factory calibration
pH Configuration
5 Factory calib.
In submenu 5 Factory calib, gives you the possibility to reset general calibration
parameters that correspond, approximately, with those of a new probe and which
are the ones programmed by the chlorinator form factory values. This can be
useful if you have saved successive calibrations and do not have the buffer solution
for a correct calibration.
Press OK to enter the sub menu 5 Factory calib, it will show the following screen.
Factory Calib.?
yes:OK exit:MENU
Ver 05/19
6 pH Basic