Calibration; Running A One-Point Ph/Ion Calibration; Running A Multi-Point Ph/Ion Calibration - Mettler Toledo SevenCompact S220 Instrucciones De Manejo

1 Press READ to start editing the cell in the table.
The softkeys on the display change.
2 Press and
The softkeys change back to
3 Navigate to a cell and press Delete to remove a value.
4 To finish editing the table, navigate with the
5 Press READ to confirm the action and exit the menu.
4.9 C alibration
The meter allows you to perform pH/ion calibrations with up to 5 points.
Calibration is only possible in the full-information screen. When starting a calibration by pressing
the CAL key while the instrument displays the close-up screen, it will automatically switch to the
full-information screen.
4.9.1 R unning a one-point pH/ion 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.
●
With the one-point calibration only the offset is adjusted. If the sensor was previously cal i b rat-
ed with a multipoint calibration the previously stored slope will remain. Otherwise the the o r et i -
cal slope (-59.16mV/pH) will be used.
4.9.2 R unning a multi-point pH/ion calibration
pH and ion calibrations can be run with this meter for up to 5 points.
1 Run the calibration as described in "Running a one-point pH/ion" (steps 1 - 2).
2 Rinse the electrode with deionized water.
3 Place the electrode in the next calibration buffer.
4 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.
5 Repeat the steps 2 - 4 for all calibration buffers.
6 Press End to end the calibration procedure.
Alternatively, the meter ends the calibration automatically when 5 calibrations are per-
formed. The offset value and slope are shown on the display.
7 Press to scroll down to next data set
to enter the value and press READ to confirm.
and .
and to highlight Save.
Operating the meter 19