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12
Calibration (basic measurement comparison)
11.5.2
Configuration assistant
There is a configuration assistant in each of the configuration menus
for pH and chlorine (Cl) and redox (mV). You only need to enter the
pool volume and the dosage pump output into the assistant. The
assistant uses that data to calculate sensible basic settings for the
control parameters, especially for the proportional range and the
minimum dosing output.
A manual correction can be indicated in order to adjust the automatic
calculation performed by the assistant:
Manual
correction Effect
0%
Standard calculation, no correction
-90%...-1% Reduction of dosing rate by the indicated %-value on the
standard calculation for lightly burdened pools with low needs
for maintenance products.
1% ...
Increase in dosing rate by the indicated %-value in the
100%
standard calculation for heavily burdened pools with high
maintenance product needs.
IMPORTANT NOTICE!
Manual optimisation of control parameters
The control settings calculated with the help of the
configuration assistant generally deliver good results
but cannot guarantee optimum control quality in every
case.
Under certain circumstances, it may be necessary to
optimise the control parameters manually if problems
arise.
12
Calibration (basic measurement comparison)
The basic prerequisite for exact and reliable measurement and control
is regular calibration of the measurement electrodes.
The electrodes convert the measured water parameters into an
electric measurement signal. The correlation between the value in the
pool and the electric measurement signal is not always the same and
may vary from electrode to electrode. Furthermore, it depends on
water quality and other general conditions that can change over the
course of time.
Calibration calculates the exact correlation between the measured
water parameter and the electric measurement signal. Precise
measurement can only be expected after calibration.
12.1
When is calibration necessary?
Calibration absolutely must be performed in the following situations:
First start-up or return to service
•
Water change
•
Electrode replacement
•
If there are relevant deviations between what the device displays
•
and the manually control measurements performed on a regular
basis
After adding water supplements or after miscellaneous changes in
•
water quality
In regular intervals, at least once a month
•
12.2
pH calibration
There are various options for calibrating a pH electrode:
1-point calibration with buffer solution pH 7
•
2-point calibration with buffer solutions pH 7 and pH 9
•
(or other pairs, such as pH 6.80 and pH 4.65)
1-point calibration to the pool's pH value
•
(Determined with photometer or simple colour tester)
For 1-point calibration, the display value is moved one consistent
offset up or down. The electrode slope is not recalculated in 1-point
calibration. It remains unchanged.
In 2-point calibration, the electrode slope is recalculated in addition to
the offset.
User Manual PoolManager
®
HAZARD!
Overdosage due to
missing or incorrect calibration
Erroneous calibration, or not performing calculation,
can lead to significant measurement errors, which
under certain circumstances may result in heavy
overdosing of pH minus or chlorine.
Potential consequence: Gravest degree of injury,
heavy material damage.
• Perform careful calibration in each of the following
situations
33
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