Construction And Function; Typical Applications - ProMinent DULCOTEST CDE 2-mA-2 ppm Montage- Und Betriebsanleitung

Construction and Function

3.2 Function
Use the DULCOTEST CDE sensor to selec‐
®
tively measure the concentration of chlorine
dioxide (ClO ), even in the presence of free
2
chlorine. The cross-sensitivity to free chlorine is
< 2 %.
The sensor is a diaphragm-covered, ampero‐
metric two-electrode sensor.
The chlorine dioxide passes through the dia‐
phragm and is electrochemically transformed
on the working electrode.
The primary current signal from this implemen‐
tation is electronically amplified, temperature-
compensated and transmitted as an uncali‐
brated 4 ... 20 mA signal to the measuring/
control unit.
3.2.1

Typical applications

Type CDE 2
The type CDE 2 is used, among other things,
for disinfecting potable water or water treatment
for beverage production. The sensor may not
be used in media containing agents decreasing
the surface tension (surfactants, active-
cleansing substances). Continuous operation at
media temperatures of 5 °C to 45 °C is pos‐
sible.
Type CDE 3
Type CDE 3 is used in the chlorine dioxide
treatment of hot water similar to drinking water
up to 60 °C, e.g. for legionella control.
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