
Transmitter M300 41
© 12 / 11 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M300
Printed in Switzerland 52 121 389
7.2.1 One-pointSensorCalibration
(Display reflects typical Sensor calibration)
Enter Conductivity Sensor Calibration mode as described in section 7.1 “Enter Calibration Mode”
and choose one of the compensation modes (see section 7.2 “Conductivity/Resistivity Calibra-
tion”).
Select 1 point Calibration and press [ENTER]. With conductitivty sensors a one-point calibration
is always performed as a slope calibraton.
Place the electrode into the reference solution.
Enter the Value of calibration Point 1 and then press the [ENTER] key to start calibration. The
value in the 2nd text line is the actual measured value from the sensor prior to calibration.
After the calibration the Multiplier or slope calibration factor ”M” and the Adder or offset calibra-
tion factor ”A” are displayed.
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.
7.2.2 Two-pointSensorCalibration
(4-electrodesensorsonly)
Enter Conductivity Sensor Calibration mode as described in section 7.1 Enter Calibration Mode
and choose one of the compensation modes (see section 7.2 “Conductivity/Resistivity Calibra-
tion”).
Select 2 point Calibration and press [ENTER].
Place the electrode into the first reference solution.
CAUTION: Rinse sensors with a high-purity water solution between calibration points to prevent
contamination of the reference solutions.
Enter the Value of Point 1 and press the [ENTER] key. Place the sensor into the second reference
solution.
Enter the Value of Point 2 and press the [ENTER] key to start the calibration.
Comentarios a estos manuales