DCM 01 Chlorine Sampling
Station
For swimming pool water chlorine in different types
of use is the predominant disinfectant. JESCO has been
offering the technology for continuous measurement and
control of the chlorine surplus (=free chlorine: HOCl)
successfully for many years. By the oxidation of organic
impurities chloramines are formed (= combined chlorine:
mono, di and trichloramine). Free chlorine and combined
chlorine summed up result in the total chlorine amount.
The German standard DIN 19643-1 prescribes the limiting
values for the concentration of free and combined chlorine
in the water. It must be ensured constantly that these
values are kept to and that the pool staff checks and
records them daily when opening the pool, at lunchtime
and before closing it. During the past years the demand
for an automatic measurement / control of the combined
chlorine concentration has been steadily increasing.
According to the specialists, chloramines are considered
to be damaging to health. Therefore the reduction of
chloramines by means of appropriate measuring and control
equipment should be aimed at (see also metering of activated-carbon
powder - JESCO AKODOS).
As today online recording and display of the free chlorine
concentration is standard and required, in the future
this will also be the case for combined chlorine.
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