ProMinent DULCOTEST Mode D'emploi page 23

Fig. 1
4
Fig. 2
Sensor
designs
ProMinent ®
OCl -
HOCl
5 6 7 8 9 10 11
pH-value
Cable bush
PG-7-threaded connector
Adapter
2-wire-connector
Tensioning ring
Electrode shaft
Vent hole
Hose seal
Membrane cap
Membrane
cap cover
Design and function
DPD-1 reagent is normally used to
calibrate the CLE chlorine sensor.
However, this measuring method
always detects the sum of HOCl and
-
OCl . Therefore the pH value must
be kept constant after calibration. If
the pH value has altered by more
than ±0.2 since the previous
calibration the probe must be
recalibrated. If the pH value of the
sample liquid cannot be kept
constant you should use a controller
which can automatically correct the
pH value of the chlorine signal.
Type CLE 3.1-mA
23