Endress+Hauser Liquisys M CUM253 - Offset and Slope Calibration

Liquisys M CUM223/253 Commissioning
Endress+Hauser 73
6.7 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. 32: Offset
XTime
YMeasured value
A Calibrated value
B Current measured value
Following a calibration, the offset is automatically set to zero.
Y
X
A
B
Coding Field Setting range
(Factory settings, bold)
Display Info
V
Function group
OFFSET
V1 Enter absolute value Current measured value
V2 Enter offset Current offset
V3
Calibration status is
displayed
o.k.
Exxx
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
FNU
Real PV
0.0
V2
FNU
PV Offset
0.0
V3
Status
o.k.
V4
Store
yes