Running A One-Point Ph Calibration; Running A Multi-Point Ph Calibration; Automatic Buffer Recognition; Sample Measurements - Mettler Toledo SevenCompact S210 Instrucciones De Manejo

4.9.1 Running a one-point pH calibration
1 Place the electrode in a calibration buffer/standard and press CAL.
Cal 1 appears on the display
2 The meter endpoints according to the preselected endpoint mode after the signal has stabilized or
after pressing READ.
The relevant buffer/standard value is shown on the display.
3 Press End to accept the calibration.
The calibration result is shown on the display.
4 Press Save to save the result.
— or —
5 Press Exit to reject the calibration and return to sample measurement.
Note
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With the one-point calibration only the offset is adjusted. If the sensor was previously calibrated
with a multipoint calibration the previously stored slope will remain. Otherwise the theoretical
slope (-59.16mV/pH) will be used.
4.9.2 Running a multi-point pH calibration
1 Place the electrode in a calibration buffer/standard and press CAL.
Cal 1 appears on the display
2 The meter endpoints according to the preselected endpoint mode after the signal has stabilized or
after pressing READ.
The relevant buffer/standard value is shown on the display.
3 Rinse the electrode with deionized water.
4 Place the electrode in the next calibration buffer.
5 Press CAL.
Cal 2 appears on the display. The meter endpoints according to the preselected endpoint
mode after the signal has stabilized or after pressing READ. The relevant buffer value is
shown on the display.
6 Repeat the steps 2 - 4 for all calibration buffers.
7 Press End to end the calibration procedure.
Alternatively, the meter ends the calibration automatically when 5 calibrations are performed.
The offset value and slope are shown on the display.
8 Press
9 Press Save to keep the calibration.
10 Press EXIT to reject the calibration.
4.10 Automatic buffer recognition
The meter features automatic pH buffer recognition for the predefined buffer groups (see "Appendix")
and the user-defined buffer groups. The buffers within a buffer group are automatically recognized by
the meter and displayed during calibration.
This feature allows the calibration in any order within a predefined or user-defined pH buffer group.
4.11 Sample measurements
1 Place the sensor in the sample and press READ to start a measurement.
The endpoint format blinks, indicating a measurement is in progress. The display shows the
readings of the sample.
18 Operating the meter
to scroll down to next data set.