Product Description; Product Design - Endress+Hauser CCS50D Operating Instructions Manual

Product description

3 Product description
3.1

Product design

The sensor consists of the following functional units:
• Membrane cap (measuring chamber with membrane)
– Separates the inner amperometric system from the medium
– With robust PVDF membrane and pressure relief valve
– Guarantees a defined and consistent electrolyte film between cathode and membrane
– With special support grid between cathode and membrane for a defined and consistent
electrolyte film and therefore a relatively constant reading at varying pressures and flows
• Sensor shaft with
– Large anode
– Cathode embedded in plastic
– Embedded temperature sensor
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2
3
4
 1 Sensor structure
3.1.1 Measuring principle
Chlorine dioxide levels are determined in accordance with the amperometric measuring
principle.
The chlorine dioxide (ClO
reduced to chloride ions (Cl
8
5
) in the medium diffuses through the sensor membrane and is
2
- ) at the gold cathode. At the silver anode, silver is oxidized to
1 Memosens plug-in head
2 Sensor shaft
3 Large anode, silver/silver chloride
4 Gold cathode
5 Grooves for installation adapter
6 Membrane cap with dirt-repellent
membrane
7 Pressure relief valve (elastic)
8 Sensor membrane
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7
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A0034227
CCS50D
Endress+Hauser