Endress+Hauser Mycom S CPM 153 Operating Instructions Manual page 88

6 Start-up
Calibration
redox relative
88
"50 % turnover point"
The 50 % turnover point must be known (e.g. through titration of the toxic solution). It is
used as the buffer of a sample at this turnover point.
CODE CHOICE
(default = bold)
C1 Electrode 1
Electrode 2
shared
Abort calibration
CC Calibration with
50 % turnover point
CCE1 Immerse:
Electrode in buffer
CCE2 20 %
(0 ... 30 %)
CCE3 Time: 10 s
mV 1:
CCE4 / CCE5 50 % voltage
20 %
80 %
CCE6 Invalid calibration value
CCE7
Accept
Reject
Recalibrate
CCE8 Electrode in medium?
INFO
Selection for calibration
(only two-circuit)
lect electrode 1 or 2, and then run through calibration
for each individual electrode.
Note in display
Display of the type of on-site calibration selected in the
calibration settings.
Handling instructions
Immerse the electrode in buffer (sample at 50 %
turnover point, see above).
Confirm by pressing
Enter buffer
Enter the relative redox value of buffer 1 (detoxified
sample) in percent.
Checks the stability of the calibration
225 Wait until the measurement is stable:
Time does not count down,
mV value no longer flashes,
Display "Measured value stable"
Confirm by pressing
-500 mV
Note in display:
0395 mV Info on electrode 1 / 2
-0500 mV Data on the voltage sequence on the calibration curve.
Note in display:
Error message if the entered offset is too large.
End of calibration
Accept: Pressing
Reject: The data is not accepted and the device has
not been recalibrated.
Recalibrate: The data is rejected and the device is
recalibrated.
Note in display:
If the electrode is back in the medium, so that measure-
ment can take place?
Mycom S CPM 153
F
F
F
accepts the new calibration data.
Endress+Hauser