Cond 7310 Conductivity
ba75933e04 06/2013 25
0.800 ... 0.880 cm
-1
(e.g. KLE 325 with a nominal cell constant of 0.840
-1
)
The cell constant is determined in the control standard, 0.01 mol/l KCl. Cell
constants outside the ranges quoted above cannot be calibrated.
In the delivery condition, the calibrated cell constant of the meter is set to 0.475
cm
-1
(conductivity measuring cell, TetraCon 325).
For this calibration procedure, the Measuring cell setting must be set to cal in
the Measurement menu. Proceed as follows to determine the cell constant:
5.2.4 Calibration data
Displaying the cali-
bration data
The calibration record of the last calibration is to be found under the menu item,
<F1> / [Menu] / Calibration / Calibration record. To open it, press the <CAL_>
key in the measured value display.
1. Connect the conductivity measuring cell to the measuring instrument.
2. In the measured value display, select the conductivity parameter with
<M>.
3. Start the calibration with <CAL>.
The cell constant that was calibrated last is displayed.
4. Immerse the conductivity measuring cell in the control standard solu-
tion, 0.01 mol/l KCI.
5. Start the measurement with <ENTER>.
The [AR] status indicator is displayed. A progress bar is displayed and
the display of the measured parameter flashes.
6. Wait for the end of the measurement with stability control or accept the
calibration value with <ENTER>.
The calibration record is displayed and output to the interface.
7. Using <F1>/[Continue] or <ENTER>, switch to the measured value
display.
The calibration record is automatically transmitted to the interface
after calibrating.
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