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TECHNICAL INFORMATION
Operating Principle
The ChloroSense uses the electrochemical technique
known as chronoamperometry. Chronoamperometry
involves applying a fixed voltage to a working electrode
and recording the resulting current-time dependence.
The magnitude of the current is directly proportional to
the concentration of chlorine in the test sample.
ChloroSense sensors have two working electrodes, one
that measures free chlorine and one that measures total
chlorine. The voltage has been selected so that free and
total chlorine can be measured simultaneously.
Once the sensor is inserted, the analysis is fully
automatic and operator independent. The ChloroSense
precisely controls the sensor cycle, and captures and
collates thousands of signal readings. The processor
interprets these readings to identify free and total
chlorine, and determines the exact concentration. The
instrument display gives a direct reading of the test
result in mg/l.
No user calibration is required, because each sensor
batch is assigned a 60 digit calibration code during
manufacture. This code is used to construct a calibration
curve that exactly matches the sensor batch.
A
pre-programmed, plug-in calibration chip is provided with
each pack of sensors to automatically enter the
calibration code into the instrument.
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