ALTANA LC 4 - Manual (Page 24)

Operation BYK LC 4
24
4.4.2 Determining the cell constant (calibration in the control stan-
dard)
Note
This method of automatically determining the cell constant by calibration in
the 0.01 mol/l KCL control standard solution can only be used for measuring
cells with cell constants in the range 0.450 ... 0.500 cm
-1
(sensor module
TetraCon V).
This is how you can determine the cell constant:
Note
You can return to the measuring mode with <
g>.
The displayed calibrated cell constant is used immediately.
Note
You can terminate the calibration with <
E>.
The data of the terminated calibration is not used.
1 Open the setting menu for the cell constant with < C>.
The display shows the setting last selected.
2 If necessary, press < "_> repeatedly until the CAL display appears.
3 If necessary, switch between the cell constant last calibrated, the
date of the calibration and the calibration temperature with <
ß>.
4 To calibrate:
Immerse the sensor module in the control standard solution.
5 Start the measurement with < C>.
The calibrated cell constant is displayed.
The unit of the measured value display flashes (AutoRead) as long
as the measured value is not stable.
ESC
TC
Sal
4
mg/l
Lin
Tref20 Tref20
Tref25
nLF
TDS
MEM
C
mS/cm
RCL
S
SAL O
2
RESET
Cell
LAP
mbar
STO
LoBat Day.Month h:min min:s Ident Lap
CLR
M cm
k cm
K
A L C
CAL
Cell 4 6 8 0
1 cm
CAL TC
ESC
CellTC
Sal
4
mg/l
Lin
Tref20 Tref20
Tref25
nLF
TDS
MEM
C
mS/cm
RCL
S
SAL O
2
RESET
Cell
LAP
mbar
STO
LoBat h:min min:s Ident Lap
CLR
M cm
k cm
1 cm
K
A L C
CAL
Day.Month
1 3 0 5
CAL TC
< ß_>
ESC
Day.Month
1 CellTC
Sal
4
mg/l
Lin
Tref20 Tref20
Tref25
nLF
TDS
MEM
mS/cm
RCL
S
SAL O
2
RESET
Cell
LAP
mbar
STO
LoBat h:min min:s Ident Lap
CLR
M cm
k cm
1 cm
K
A L C
CAL
2 5 7
CAL TC
C
< ß_>