Process Calibration - Mettler Toledo M400 Kurzanleitung

7.0
H
pH
25.0
°C
pH Calibration
Type = 2 point
7.0
H
pH
25.0
°C
Press ENTER when
Sensor is in Buffer 1
7.0
H
pH
25.0
°C
Press ENTER when
Sensor is in Buffer 2
7.0
H
pH
25.0
°C
Point2 = 6.86 pH
pH = 7.00 pH

Process calibration

7.0
H
pH
25.0
°C
pH Calibration
Type = Process
7.0
A
pH
25.0
°C
Point1 = 7.00 pH
pH = 6.87 pH
12
Select 2 POINT CALIBRATION by pressing the [ENTER] key.
u
Place the electrode in the first buffer solution and then press the [ENTER] key.
u
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.
u
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 suc-
cessful Calibration is confirmed on the display. If you select CALIBRATE, the values
u
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 m key once followed by the [ENTER]
key. To show the ongoing Calibration Process an "H" is displayed in the top left hand
corner.
u
The "H" changes to "A" (or "B", depends on type of sensor) if Process Calibration is
selected 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.
u
After determining the pH Value of the Sample press the c key again to proceed with
the calibration. If the display prompts you to enter the calibration security code, press
the m or . key to set the calibration security code, then press the [ENTER] key to
confirm the calibration security code.