
Transmitter M300 46
© 12 / 11 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M300
Printed in Switzerland 52 121 389
7.5.1.1 AutoMode
Place the electrode in the buffer solution and press the [ENTER] key to start the calibration.
The display shows the buffer the transmitter has recognized (Point 1) and the measured value.
As soon as the stabilisation criteria have been fulfilled, the display changes to show the slope
calibration factor S and the offset calibration factor Z.
Select Yes to save the calibration values and the successful Calibration is confirmed on the dis-
play. If an ISM sensor is connected, the calibration data will be stored in the sensor.
You will get the message ”Re-install sensor” and ”Press Enter” on the display. After pressing
”Enter” the M300 returns to the measuring mode.
7.5.1.2 ManualMode
Place the electrode in the buffer solution. The display shows the buffer the transmitter has recog-
nized (Point 1) and the measured value. Press [ENTER] to proceed.
The display shows now the slope calibration factor S and the offset calibration factor Z.
Select Yes to save the calibration values and the successful Calibration is confirmed on the dis-
play. If an ISM sensor is connected, the calibration data will be stored in the sensor.
You will get the message ”Re-install sensor” and ”Press Enter” on the display. After pressing
”Enter” the M300 returns to the measuring mode.
7.5.2 TwoPointCalibration
Select 2 point Calibration.
Depending on the parameterized Drift control (see chapter 8.2.4.2 “pH Parameters”) one of the
two following modes is active.
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