TT-CL
2
Free Chlorine Sensor
TURTLE TOUGH
The chlorine sensor is a membrane covered potentiostatic 3-electrode system. The measuring electrode is
membrane covered and is in the electrolyte area together with the reference electrode. This electrolyte area
contains a special electrolyte and is separated by a second membrane from the sample water.
In this measuring method chlorine diffuses out of the sample water, through the membranes and causes an
electrical signal at the measuring electrode. The electrical signal at the measuring electrode is proportional to the
chlorine concentration and is amplified by the electronics in the sensor. The measuring signal is independent from
the temperature of the measuring water due to an integrated temperature compensator.
4.0.1
Installation
• Please refer to Site Selection, section 2.1
• Ensure the probe housing is mounted vertically, to ensure correct water flow over the sensor
• Ensure the installation is stable, secure and away from vibration
• Ensure the sample is free from bubbles and is well mixed
4.0.2
Setup
CAUTION:
When you unscrew the filled (or unfilled) membrane cap, ensure
the vent band has been removed from the vent hole, to allow
air to enter, otherwise the membrane will be destroyed by the
vacuum.
• Unscrew the membrane cap from the electrode shaft.
• Place the membrane cap and the G-holder onto a clean and
non-absorptive bench.
CAUTION: Never polish this area of the probe.
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