VWR MD 8000 L, Руководство по эксплуатации

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Conductivity MD 8000 L
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of the cell constant and stores this value in the meter.
Thus, you should calibrate at regular intervals.
9.3.2 When to calibrate?
 After connecting a sensor
 Routinely within the framework of the company quality assurance
 When the cleaning interval has expired
9.3.3 Determining the cell constant (calibration in control standard)
You can determine the actual cell constant of the IDP conductivity sensor by
calibrating with the control standard in the following range:
0.450 cm
-1
... 0.500 cm
-1
(e.g.
IDP 761-C
, nominal cell constant 0.475 cm
-1
)
The cell constant is determined in the control standard, 0.01 mol/l KCl.
In the default condition, the calibrated cell constant of the IDP sensor is set to
0.475 cm
-1
(IDP conductivity sensor
IDP 761-C
).
For this calibration procedure, the Type setting must be set to cal . Proceed as
follows to determine the cell constant:
1. Connect the conductivity sensor to the meter.
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 sensor in the control standard solution,
0.01 mol/l KCI.
1 / c m
0 . 475
25 . 0
°C
01.11.2018
08:00