Operation
Liquisys M CPM223/253
70
Hauser
Offset
The settings in the OFFSET function group can be used to calibrate the measurement to a reference
measurement. This requires a linear shift of all the measured values, i.e. the adjustment is
determined
for one measured value, and all others are calculated using the same adjustment.
C07-CPM2x3xx-05-06-00-xx-005.eps
Fig. 46:
Offset
X
Time
Y
Measured value
A
Calibrated value
B
Current measured value
!
Note!
Following a calibration, the offset is automatically set to zero.
Y
X
A
B
Coding
Field
Setting range
(Factory settings, bold)
Display
Info
V
OFFSET function
group for pH or
redox
Depending on the operating mode selected,
either pH or redox appears (i.e. no direct
selection can be made)
V1
Enter desired
measured value
Current measured value
pH -2.00 ... 16.00
-1500 ... 1500 mV
0.0 ... 100.0 %
You can edit the display.
The entry can differ from the actual value by
max. ±2.0 pH / ±120 mV / ±50 %.
V2
Current offset is
displayed
pH 0.00
pH -2.00 ... 2.00
0 mV
-120 ... 120 mV
0.0 %
-50.0 ... 50.0 %
V3
Calibration status is
displayed
o.k.
E xxx
V4
Store calibration
result?
yes
no
new
If V3 = E xxx, then only No or New.
If New, return to V.
If Yes/No, return to "Measurement".
V
OFFSET
V1
pH
Real PV
0.00
V2
pH
PV Offset
0.00
V3
Status
o.k.
V4
Store
yes
