Radiometer Analytical MeterLab PHM220 Mode D'emploi page 19

5. If you have edited your procedure for a two-point calibration, you
will normally proceed to step 6. However, if you wish to interrupt
the two-point calibration at this point, you can do so by:
a. Pressing the Cal key, the message CAL. INTERRUPTED
NO DATA STORED will appear. Return to the mode display
by pressing the Mode key or press
calibration.
b. Pressing the Mode key, the display which then appears is
the same as that shown for a one-point calibration (see
below).
If you have edited the method for a one-point calibration, the
CALCULATING PLEASE WAIT message will briefly appear to
be replaced by a display showing the calibration result, the new
zero pH and the previously determined sensitivity shown in
brackets:
If a printer is connected, the calibration result will now be printed
out and stored in the GLP table.
Press the Sample key to proceed to sample measurements, or
the Mode key to return to the Mode display. Refer to pH
Measurements, page 21 or mV Measurements, page 24.
6. To continue a two-point calibration, rinse the electrode(s) and
temperature sensor thoroughly with deionised water and dab dry
with a soft tissue. Dip the electrode in the second buffer, e.g.
7.000, when indicated on the display. Press
7. The measurement can again be followed on the display by
means of the pH reading and the visual STABility indicator.
When the electrode signal is stable the PHM220 will display the
zero pH and the sensitivity:
ZeropH: 6.33
(Sens. : 100.0%)
Dip Electrode in
Buffer 7.000
ZeropH: 6.33
Sens. : 99.1%
to start a new
to continue.
Starting up
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