Calibrating The Measured Value For Amperometric Measured Variables; Selection Of The Calibration Process For Amperometric Measured Variables - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Calibrating the controller
Calibrating the measured
9.4
value for amperometric
measured variables
Calibrating amperometric meas‐
ured variables
The calibration procedure for ampero‐
metric measured variables is the
same for all amperometric measured
variables.
The procedure for calibrating ampero‐
metric measured variables is
described throughout based on the
measured variable chlorine [Cl]. All
other measured variables require the
same procedure as the measured
variable chlorine [Cl].
The following measured variables can
be calibrated using the procedure
described here:
Chlorine
–
Chlorine dioxide
–
Bromine
–
chlorite
–
Ozone
–
Peracetic acid (PES)
–
H O
–
2 2
82
Combined calibration of pH and
chlorine
It is mandatory that the pH measure‐
ment is always calibrated first and
then the chlorine measurement. Every
other pH measurement calibration
must always be followed by a chlorine
measurement calibration. Otherwise
chlorine measurement will be inaccu‐
rate.
Selection of the calibration
9.4.1
process for amperometric
measured variables
To calibrate the controller there are two
available calibration processes:
Slope calibration
n
Calibration of zero point
n