5.11
Calibration
This function group is used to calibrate the
transmitter. Two different types of calibration
are possible:
• Calibration by measurement in a calibration
solution of a known conductivity.
• Calibration by entry of the exact cell constant
of the conductivity measuring cell.
Note:
•
If the calibration procedure is
aborted by pressing the PLUS and
MINUS keys at the same time
(return to C114, C126 or C136) or
if the calibration is faulty, then the
previous calibration data are
reinstated. A calibration error is
indicated by the “ERR” message
and flashing of the measuring cell
symbol on the display.
Repeat calibration!
•
The instrument is automatically
switched to hold during calibration
(factory setting).
Coding
Field
Selection or range
Factory setting
Display
Info
C
Function group
CALIBRATION
C1 (1)
Calibration of
inductive cells
with a ring-shaped
opening
Airs
=
Airset
(1)
cellc = cell constant (2)
InstF = installation
factor (3)
For conductive measurement,
Airs and InstF are not available.
The calibration of the cell is to be
performed in air. The cell must
be dry.
Remove measuring cell from the medium and dry in air.
C111
Residual coupling
Start calibration
(Airset)
current meas. value
Start calibration with CAL.
C112
Residual coupling
is displayed
(Airset)
–80.0 ... 80.0 µS
Residual coupling of measuring
system (measuring cell and
transmitter).
Factory settings are printed in
bold
face;
base version does not include functions in italics.
C
CALIBRAT
AirS
C1
Calibrat
0.0
C111
AirSet
µS/cm
5.3
C112
AirSetVal
µS/cm
LM253E5D.CHP
Liquisys M CLM 223 / 253
Instrument configuration
Hauser
49