Determining/Setting The Cell Constants - wtw Cond 330i Instrucciones De Operación

Cond 330i/340i
Procedure
Calibration
evaluation
C L E L
C A L
1/
cm
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Tref25
Cal

Determining/Setting the cell constants

The cell constants are determined in the control standard, 0.01 mol/l KCl.
You can determine the cell constants of the conductivity measuring cells in
the range of 0.450 ... 0.500 cm
You can also set the cell constants manually in the ranges
l 0.090 ... 0.110 cm
l 0.250 ... 2.500 cm
or select the fixed cell constants 0.010 cm
After the calibration, the measuring instrument automatically evaluates the
current status of the calibration. The evaluation appears on the display.
Display
E3
Invalid calibration
Procedure for determining the cell constants:
l Connect a conductivity measuring cell to the measuring instrument.
l Press the <CAL> key repeatedly until the
l Then press the <RUN/ENTER> key.
l Press the <CAL> key repeatedly until the
on the calibration status, the instrument displays:
– the current, calibrated cell constant (with sensor symbol on the
display) or
– the fixed cell constant 0.475 1/cm (without sensor symbol on the
display). In this case, the measurement parameters are initialized.
Note
At this point, the procedure can be terminated with <M>.
l Immerse the conductivity measuring cell in the control standard solution,
0.01 mol/l KCI.
Determining/Setting the cell constants
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or 0.800 ... 1.200 cm
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-1
Cell constant [cm
0.450 ... 0.500 cm
0.800 ... 1.200 cm
Outside the range
0.450 ... 0.500 cm
or
0.800 ... 1.200 cm
-1
.
-1
.
-1
]
-1
-1
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CELL display appears.
CAL appears. Depending
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