Mettler Toledo M400 Configuration Rapide page 12

A
7.0
pH
25.0
°C
pH S=100.0 % Z=7.124
Save Calibration Yes
7 O Calibration
2
For Display setup, analog outputs and setpoints see the section "General Setup".
O Calibration
2
A
21.7
pH
A
25.0
°C
Calibrate Sensor
Channel B Oxygen
H
21.7
%sat
25.0
°C
Point1 = 100.0 %sat
DO = 0.033 %sat
H
21.7
%sat
25.0
°C
O2 S=0.019nA Z=0.000nA
Save Calibration Yes
12
Enter the pH value of the sample then press the [ENTER] key to start calibration.
After the calibration the slope calibration factor S and the offset calibration factor Z
are displayed. Select ADJUST to save the new 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. The "A" in the top left hand corner disappears.
(PATH: Cal)
For multi-channel devices: Using the
user change the channel to be calibrated.
Enter Calibration mode by pressing the
A flashing "H" (alternating with "A" or "B" to show the channel being calibrated for
multi-channel devices) in the top left hand corner shows the ongoing calibration process.
A DO sensor calibration is always a one point calibration either in Air (Slope) or a
zero (Offset) calibration.
It is possible to select a Slope or Zero calibration. A one point slope calibration is done
in air and a one point offset calibration is done at 0 ppb DO. Press the [ENTER] key
after selecting Slope or Offset.
Enter the value for Point 1 including a decimal point. DO is the value being measured
by the transmitter and sensor in the units set by the user. Press [ENTER] when this
value is stable to perform the calibration.
After the calibration the slope calibration factor S and the offset calibration factor Z are
displayed.
and key on the "Channel A" field lets the
key.