pH Wireless Ver.21-7 10
You can set both points and choose the percentage of dosage for each of them. To
do it, place the cursor with the
MENU
key under the parameter you want to modify
and
USE
arrows to change the value. Press
OK
to save the data and exit the sub-
menu.
By choosing the setpoints you will be defining at the same time the required dosing
volume and the response delay after dosing, both of them depending on the size of
your pool. For example, if your pool has a high volume you should establish high per-
centages of dosing. The response time in the pH measurement of your pool can be
considered when setting the lower setpoint, stopping the dosage before reaching the
desired pH value. For example, to obtain a pH = 7.0 and avoid overdosing, set the
dosage stop in a higher value:
pH < 7,2 0%
Each pool needs more or less acid, as they are more or less reactive to the dosage;
at the beginning at least, you may need to correct the setpoints several times.
3. pH probe Calibration
pH Configuration
2 Cal pH 4
pH Configuration
3 Cal pH 7
pH probes require a calibration before their first use and then they need to be cali-
brated periodically. This is because different probes have different responses and the
response of the same probe inevitably varies with time.
The calibration consists in measuring the response of the probe introducing it in two
different buffer solutions in order to be able to calculate the pH of any other solution,
in our case, the pH of the pool water.
The calibration of the probe is carried out using the two buffer solutions supplied (pH4
and pH7) and entering the submenus “
2 Cal pH4
” and “
3 Cal pH7
” respectively.
Enter the sub-menu 2 Cal pH4 by pressing OK key, it will show the following screen:
pH 4 Calibration
4.05 Cal 4.00
pH 7 Calibration
7.05 Cal 7.00
The value on the left indicates the current pH value measured by the probe. 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.
