ProMinent DULCOTEST BRE 1-mA-10 ppm Mode D'emploi page 32

Design and function
membrane. The constant polarisation voltage between the two electrodes
causes the chemical reaction of the bromine compound on the working
electrode. The resulting primary current is detected as a signal (amperometric
measuring principle). Within the specified working range of the sensor this
primary current is proportional to the bromine concentration and with this
type of sensor depends only slightly on pH. The amplifier electronics corrects
the temperature dependence of the sensor's primary current and converts it
to an output signal of 4-20 mA. The output signal is displayed by the
DULCOMETER
Depending on the type of bromination agent used, the measuring signal of
the BRE measuring cell follows the DPD 1 and/or DPD 4 determination (see
Chapter 8.2).
Fig. 1
Sensor designs
32
® D1C-Bromine.
Cable bush M12
threaded connector
Top part
2-wire connection
Clamping ring
Electrode shaft
O-ring seal
Rubber seal
Membrane cap
Membrane
protective cap
O-ring seal
Counter- and
reference electrode
Working electrode
ProMinent
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