JUMO dTRANS pH 02, Operating Manual, Page: 63 / 136

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9 Calibrating a redox measurement chain
The device returns to measuring mode.
Calibration is complete
After rinsing, the combination electrode can again be used to take
measurements.
9.4 2-point calibration
✱
Make preparations, see chapter 9.2 "General information", page 60.
✱
Start calibration, see chapter 9.2.2 "Ways to start the calibration", page 61.
✱
Select 2-point calibration.
✱
Immerse the combination electrode in a solution with a known "good"
redox potential.
✱
Start the 2-point calibration with the key. Wait until the display value has
stabilized; then press to continue.
IIf the following permissible limits of the calibration values are not observed in
the calibration procedure then an error is displayed at the end of the proce-
dure:
Zero point:
-200 ... 200 mV
This procedure can be used to scale the absolute input signal (mV) to a
displayed relative value (%). That greatly simplifies the evaluation of the
measured value (good/bad).
Two-point calibration is only available if the unit is configured as "%" or "Cust.
specs."!
PGM
PGM