The chlorine dioxide
sensor consist of an amperometric sensor assembly and a
flow cell. The sensor is capable of measuring
disinfectant in clean water contaminated with debris due
to the unique flow cell design. The sensor assembly
includes the sensor body with 6 meters (20 feet) off
cable, replaceable membrane cap, a 6 ml bottle of
electrolyte fill solution, a clip ring and an o-ring.
The oxidiser molecules diffuse through the membrane and
in the acidic environment of the electrolyte fill
solution, a redox reaction occurs at the electrodes in
the sensor. The current generated by this reaction is
converted to a robust voltage signal that is linear with
the concentration of the oxidiser
Summary of features
WDIS sensors
• long-lasting amperometric electrodes with rugged membranes
• integrated temperature compensation
• relatively insensitive to changes in sample flow rates
• large flow cell openings which prevent clogging
• excellent long-term stability
WDIS controllers
• versatile relay configuration. Control outputs can be set as high or low set points via key-pad. Auxiliary outputs can be set as: high
• alarm, low alarm, in-range or out- of range output and probe wash
• programmable access code
• display shows at a glance the free chlorine, chlorine dioxide, peracetic acid or ozone values, analog graph relative to set points and
• status of alarms, outputs
• self diagnostics constantly monitor software and electronics whilst in operation
Sensor specifications
