Use and Care Manual

CL200A-en-GB_V9.0 5/17
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Considerations and Techniques to Preserve the Electrode
1. If the meter has not been used for several weeks or is new, at least two tests should be made
to condition the electrode.
2. Do not touch the reagent tablets. Touching can cause contamination. See the earlier section
‘Reagent Tablet Health Hazards’ for important safety information.
3. If the electrode has not been used for in a 24hr period, wipe the tip with a clean/dry paper
towel before use.
4. Before use, wash the sample cups and the caps and then rinse them completely.
5. The CL200 should not be left in a solution while turned off. If left in solution while turned off,
subsequent readings may take longer to reach the correct value.
6. Do not touch the sensor surface except with a clean/dry paper towel.
7. When measuring solutions that have large differences in chlorine concentration, i.e. 0.1ppm
and 5.0ppm, use separate sample cups.
8. Discard the sample cup when it shows a color change.
9. Maintain the electrode by completely wiping dry and then replacing the electrode cover
immediately after taking a measurement. The electrode should always be stored in the dry cap.
10. Cover the connector with the clear cover whenever the electrode is removed from the meter
body.
11. Gently stirring the probe in the solution for 10 seconds, within the first minute of operation, will
accelerate the process and yield more accurate readings. Do not stir after 10 seconds.
Troubleshooting Guide
1. If the unit appears locked it is possible that the Data Hold mode has been inadvertently
accessed. If the HOLD icon is displayed, simply press the MODE button or turn the meter off
and restart.
2. If the meter latches up and cannot be reactivated by a button press, remove the batteries and
Press and hold the On/Off button for 8 – 10 seconds. Re-install the batteries.
Note that if the batteries are removed, any stored readings will be lost.
3. If the meter reads a -1 in a known level of Chlorine, the meter may be defective.