Knick Stratos 2221X pH Produktinformation Seite 135

Calibration
Display Action
Calibration with the fi rst buff er
is terminated. Remove the elec-
trode and temp probe from the
fi rst buff er solution and rinse
them thoroughly.
One-point calibration:
Exit by pressing cal.
Slope [%] and asymmetry
potential [mV] of the electrode
are displayed.
Press enter to proceed.
Two-point calibration:
Immerse electrode and tem-
perature probe in the second
buff er solution.
Press enter to start.
Retract electrode and temp
probe out of second buff er,
rinse off , re-install.
Repeat calibration: cal
Exit calibration: enter
pH value and "HOLD" are
displayed alternately.
Sensoface is active.
Press enter to proceed.
Hold is deactivated after 20 s.
Remark
For one-point
calibration only:
The calibration process
runs again as for the fi rst
buff er.
Slope and asymmetry
potential of electrode
(based on 25 °C) are
displayed.
Confi rm safety prompt.
135