Mettler Toledo M400 Configuration Rapide page 11

H
7.0
pH
25.0
°C
Press ENTER when
Sensor is in Buffer 1
H
7.0
pH
25.0
°C
Point1= 4.01 pH
pH= 4.00 pH
H
7.0
pH
25.0
°C
Press ENTER when
Sensor is in Buffer 2
H
7.0
pH
25.0
°C
Point2 = 6.86 pH
pH = 7.00 pH
Process calibration
H
7.0
pH
25.0
°C
pH Calibration
Type = Process
A
7.0
pH
25.0
°C
Point1 = 7.00 pH
pH = 6.87 pH
Place the electrode in the first buffer solution and then press the [ENTER] key.
Auto mode: The display shows the buffer that the transmitter has recognized
(Point 1) and the measured value.
Manual mode: Enter the buffer value and press [ENTER] to proceed.
As soon as the stabilisation criteria have been fulfilled (or [ENTER] was pressed in
manual mode) the display changes and prompts you to place the electrode in the
second buffer solution.
As soon as the stabilisation criteria have been fulfilled (or [ENTER] was pressed in
manual mode) the display changes to show the slope calibration factor S and the offset
calibration factor Z. Select ADJUST to save the calibration values and the successful
Calibration is confirmed on the display. If you select calibrate, the values will not be
taken. If an ISM Sensor is used, the Calibration data will be stored in the calibration
history.
Select Process Calibration by pressing the
key. To show the ongoing Calibration Process an "H"is displayed in the top left hand
corner.
The "H" changes to "A" (or "B", depends on type of sensor) if Process Calibration is se-
lected to show the user the ongoing calibration on Channel "A" or "B".
Take a sample and press the [ENTER] key again to store the current measuring Value.
After determining the pH Value of the Sample press the
the calibration. If the display prompts you to enter the calibration security code, press
the or key to set the calibration security code, then press the ENTER key to con-
firm the calibration security code.
key once followed by the [ENTER]
key again to proceed with
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