Endress+Hauser Mycom S CPM 153 Operating Instructions Manual page 80

6 Start-up
⇒
pH calibration
pH calibration
!
80
To enter the menu, proceed as follows:
"Manual data entry" ()
The numeric values for electrode zero point and slope are entered numerically and by
hand.
CODE CHOICE
(default = bold)
C1 Electrode 1
Electrode 2
Electrode 1+2
Abort calibration
CA Calibration with
data entry
CAA1
025.0 °C
(–20.0 ... +150.0 °C)
CAA2 / CAA3 07.00
(pH –2.00 ... +16.00)
IsFET:
act.value (–500 ... +500mV)
CAA4 / CAA5
59.16 mV/pH
(5.00 ... 99.00 mV/pH)
CAA6 Accept
Reject
Recalibrate
CAA7 Electrode in medium?
"Calibration with manual buffer" / "Calibration with fixed buffer" /
"Calibration with automatic buffer recognition"
Buffer manual: The buffer pH value is entered manually. The display then shows the cur-
rent measured value.
Fixed buffer: In the calibration menu from page 50 onwards, you can set two buffer solu-
tions or define them yourself. The selected pH value and buffer type are displayed.
Automatic buffer recognition: The device automatically recognises the used buffer.
Select the buffer types (e.g. E+H) in the Calibration menu.
Note!
The automatic buffer recognition is only possible with glass electrodes.
⇒
INFO
Selection for calibration
(only two-circuit)
Select 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.
Entry of temperature,
at which zero point and slope have been determined.
Entry of the electrode zero point 1 / 2
Confirm by pressing
Entry of the electrode slope 1 / 2
Confirm by pressing
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