wtw inoLab 740, Operating Manual

Page: 91 / 274

pH
91
6.4 Measuring the ORP voltage
The measuring system can measure the voltage of a
solution in conjunction with a ORP electrode, e.g. SenTix
ORP.
Note
Note that, when measuring voltages, it can take a long time
(even several hours) until the measured value becomes
stable.
ORP electrodes are not calibrated. However, you can check
ORP electrodes using a test solution.
1 Call up the Display mode with
m
.
2 Call up the measured variable U with
46
.
3 Submerse the ORP electrode in the sample.
4 Wait for a stable measured value.