Commissioning Liquisys M CPM223/253
76 Endress+Hauser
C25
Store calibration
result?
yes
no
new
If C24 = E xxx, then only No or New.
If New, return to C.
If Yes/No, return to "Measurement".
C (3)
CALIBRATION
function group:
Calibration for ORP
%
Calibration ORP %
Sensor adjustment with compensation for
wall effects.
For the calibration, a sample of the medium is placed in two containers.
The contents of the first container is detoxified. The contents of the
second container remains unchanged. A relative value of 80 % is set with
the "toxic" sample. A relative value of 20 % is set with the "non-toxic"
sample.
Default values:
0 % = -1000 mV
100 % = +1000 mV
The calibration range is ±1500 mV, the
minimum difference should be 60 mV.
C31
Determine 80%
value of the "toxic"
sample
80%
0 to 100%
Start the calibration of the "toxic" sample
by pressing the CAL key. The value is
accepted provided it is stable or
confirmed with the CAL key (see
calibration pH).
C32
Calibration is
performed
Display flashes
mV value is displayed
Accepted in the event of stability ±5 mV
for more than 10 s.
C33
Determine 20%
value of the "non-
toxic" sample
20%
0 to 100%
The procedure for C31 is repeated with
the "non-toxic" sample to calibrate value
2.
C34
Calibration is
performed
Display flashes
mV value is displayed
Stability check:
The value is accepted in the event of
stability ±5 mV for more than 10 s.
C35
Calibration status is
displayed
Display:
o.k. or error code
Press CAL.
C36
Store calibration
result?
yes
no
new
If C35 = E xxx, then only No or New.
If New, return to C.
If Yes/No, return to "Measurement".
The electrode can now be reinstalled in the process.
Coding Field Setting range
(Factory settings, bold)
Display Info
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