Calibrating The Orp Sensor; Selecting The Calibration Process For Orp; 1-Point Calibration Of Orp Sensor (Cal) - ProMinent DULCOMETER diaLog DACb Assembly And Operating Instruction

10.2 Calibrating the ORP
Sensor
10.2.1 Selecting the calibration
process for ORP
Selecting the calibration process
There are two calibration processes available
for calibrating the controller:
1-point (with buffer solution)
n
Data input
n
1. Continuous display ➨
CAL ORP
Offset
Last calibration
CAL setup
Calibration process
Pot. equalisation
continue with <CAL>
Fig. 47: [ORP] calibration menu
The calibration menu is displayed.
ð
2. Use to select the Setup menu or start
calibration by pressing
Selecting the calibration process
[CAL Setup] : Press
3.
The menu for selecting the calibra‐
ð
tion process appears.
4. Using the arrow keys select the required
[Calibration process] and
menu item
press
The input window appears.
ð
5. Use the arrow keys to select the calibra‐
tion process and press
6. Continue with
0.0 mV
13:26:11
11/04/2013
1 point
No
A1027
You can now start your chosen cali‐
ð
bration process.
10.2.2 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 calibrated.
Only an [OFFSET] deviation of magni‐
tude ± 40 mV can be set and thus com‐
pensated. If the ORP sensor deviates
by more than ± 40 mV from the refer‐
ence value, then it must be checked in
accordance with the requirements of
the sensor operating instructions.
Calibration
95