ProMinent DULCOMETER - Calibrating the ORP Sensor

9.2 Calibrating the ORP Sensor
9.2.1
Selecting the calibration
process for ORP
Selecting the calibration process
There are two calibration processes avail‐
able for calibrating the controller:
n 1-point (with buffer solution)
n Data input
1.
Continuous display ➨
CAL ORP
Pot. equalisation
Calibration process
A1027
No
0.0 mV
Offset
Last calibration
CAL setup
13:26:11
11/04/2013
continue with <CAL>
1 point
Fig. 43: [ORP] calibration menu
ð
The calibration menu is dis‐
played.
2.
Use to select the Setup menu or
start calibration by pressing
Selecting the calibration process
3.
[CAL Setup] : Press
ð
The menu for selecting the cali‐
bration process appears.
4. Using the arrow keys select the
required menu item
[Calibration process] and press
ð
The input window appears.
5. Use the arrow keys to select the
calibration process and press
6.
Continue with
ð
You can now start your chosen
calibration process.
9.2.2
1-point calibration of ORP
sensor (CAL)
Correct sensor operation
– Correct measuring and metering
is only possible if the sensor is
working perfectly
– Refer to the sensor's operating
instructions
– Remove the sensor from the in-
line probe housing and re-fit it for
calibration. To do this, refer to the
operating instructions for your in-
line probe housing
ORP sensor calibration
The ORP sensor cannot be cali‐
brated. Only an [OFFSET] deviation
of magnitude ± 40 mV can be set and
thus compensated. If the ORP sensor
deviates by more than ± 40 mV from
the reference value, then it must be
checked in accordance with the
requirements of the sensor operating
instructions.
Calibration
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