Mettler Toledo M400 Specifikace Strana 45

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Transmitter M400 45
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
Enter the value for Point 1 including a decimal point and units. The value in the second text line
is the value being measured by the transmitter and sensor in the units selected by the user.
Press [ENTER] when this value is stable and place the electrode into the second reference solu-
tion.
Enter the value for Point 2 including a decimal point and units. The value in the second text line
is the value being measured by the transmitter and sensor in the units selected by the user.
Press [ENTER] when this value is stable to perform the calibration.
After the calibration of the cell multiplier or slope calibration factor ”M” i.e. cell constant and the
Adder or offset calibration factor ”A” are displayed.
In case of a successful calibration, the calibration values are stored in the cal history* and taken
over (Adjust), stored in the cal history* and not taken over (Calibrate) or discarded (Abort).
* only available with ISM sensor. The values will be stored in the sensor.
If ”Adjust” or ”Calibrate” are chosen, the message ”Calibration successful” is displayed. In any
case you will get the message ”Re-install sensor” and ”Press ENTER” on the display. After press-
ing ”ENTER” the M400 returns to the measuring mode.
7.2.3 Process Calibration
(Display reflects typical Conductivity sensor calibration)
Enter Conductivity Sensor Calibration mode as described in section 7.1 “Enter Calibration Mode”
and choose one of the compensation modes (see section 7.2 “Conductivity calibration for two-
or four electrode sensors”).
Select Process Calibration and press [ENTER]. With conductivity sensors a process calibration is
always performed as a slope calibration.
Take a sample and press the [ENTER] key again to store the current measuring value.
During the ongoing calibration process, the letter of the channel, which is concerned by the cali-
bration, ”A” or “B” is blinking in the display.
After determining the conductivity value of the sample, press the [CAL] key again to proceed
with the calibration.
Enter the conductivity value of the sample, then press the [ENTER] key to start the calculation of
calibration results.
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