Mettler Toledo M400 Configuration Rapide page 14

CO Two point Calibration
2
Start as in chapter CO
2
A
154.5
hPa
A
26.1
°C
CO2 Calibration
Type = 2 Point
H
137.5
hPa
A
26.1
°C
Press ENTER when
Sensor is in Buffer 1
154.5
hPa
A
26.1
°C
A Point1 = 7.00 pH
A CO2 = 7.07 pH
122.4
hPa
A
26.1
°C
Press ENTER when
Sensor is in Buffer 2
2.8
hPa
A
26.1
°C
A Point2 = 9.21 pH . . .
A CO2 = 8.80 pH
2.8
hPa
A
26.1
°C
pH S=74.21% Z=6.948pH
Save Adjust
14
One point Calibration described.
Select 2 Point calibration.
Place the sensor in the first buffer solution and press the [ENTER] key to start the
calibration.
The display shows the buffer the transmitter has recognized (Point 1) and the meas-
ured value.
As soon as the drift conditions have stabilized, the display changes and prompts you
to place the electrode in the second buffer.
Place the sensor in the second buffer solution and press the [ENTER] key to go on with
the calibration.
The display shows the second buffer the transmitter has recognized (Point 2) and the
measured value.
As soon as the drift conditions have stabilized the display changes to show the slope
calibration factor S and the offset calibration factor Z.
After a successful calibration, the calibration values are taken over (Adjust) or were
aborted (Calibrate or Abort).