Aqua HC151+ pH (RX) - CALIBRATION menu

HC151+ pH(Rx)-Cl(J) / HC200+ pH(Rx)
ENGLISH
3.5.2 CALIBRATION menu
In order to obtain a precise measurement of the chemical-physical parameters of the water of the
plant to be treated, it is necessary, during the installation, to calibrate the probes (pH, Redox or
Chlorine).
pH probe calibration
For proper calibration follow the steps described below:
To calibrate the pH electrode, you need
two buffer solutions, one at pH 7 and the
other at pH 4 or pH 9.
It would be important to measure the
temperature of the buffer solution and
check the corresponding value on the
label of the solution itself; if this
measurement cannot be made, skip this
step and proceed to the next;
Connect the BNC connector of the
electrode to the relative input on the
bottom of the pump (refer to the drawing
on paragraph 5 to identify its position);
Remove the protective cap of the
electrode then wash it with water and dry
it;
Enter in Calibration menu and follow the
instructions on the display: dip the
electrode in the first buffer solution at pH
7, wait for the measurement to stabilize,
if necessary, modify the value read on
the display with one on the solution (it
can happen that the measurement does
not correspond perfectly to the solution,
this is perfectly normal). Press on the
encoder to confirm this value;
Remove the electrode from the first
solution and wash it with water, dry it
then dip in the second buffer solution at
pH 4 (or pH 9); wait for the measurement
to stabilize, if necessary, modify the
value read on the display with the one on
the on the solution. Press on the
encoder to confirm the value;
At the end of the procedure, the quality
of the electrode will be shown on the
display.
For values between 25% and 0% we
suggest replacing the electrode.