Measuring cell for free chlorine with replaceable membrane caps.
Short response time
No reagents required
Easy to install
The sensor head of the Cl 911 contains a noble metal electrode covered by a gas-permeable membrane. During measurement chlorine in the sample passes through the membrane and reaches the electrode, where it is reduced in an electrochemical reaction. This reaction generates a current which is proportional to the concentration of chlorine in the sample. A sufficient flow rate (minimum 15 cm/s) is required for the measurement. We recommend to use a flow cell (available accessory).
Measured parameter and interferences: The probe detects free chlorine from hypochlorite, gaseous chlorine or generated by electrolysis. The sample water must be free of surfactants. Chlorine dioxide and ozone are detected as well.
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