Construction And Function - ProMinent DULCOTEST CDR 1-mA-2 ppm Betriebsanleitung

Construction and Function

2.2 Function
Use the DULCOTEST CDR 1 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 is electroni‐
cally amplified, temperature-compensated and
transmitted as an uncalibrated 4 ... 20 mA
signal to the measuring/control unit.
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