wtw pHotoFlex pH Operating Manual page 59

®
pHotoFlex pH
Continuing for two-point
calibration
(Cal. type TEC)
ba75975e05 10/2017
8 Thoroughly rinse the electrode with distilled water.
9 Immerse the electrode in buffer solution 2.
10 If the Set temperature menu item appears, measure and enter
the temperature of the buffer manually (measurement without
temperature sensor).
11 Using <> <>, select Continue and press <START/EN-
TER>. The buffer is measured.
The measured value is checked for stability (AutoRead).
pH & ORP \ Calibration
i Buffer value = 10.01
i U = -177 mV
i Temperature = 24.8 °C
Terminate AutoRead
12 Wait for the end of the AutoRead measurement or Terminate
AutoRead with <START/ENTER> and take over the calibration
value.
The calibration display for the next buffer appears.
pH & ORP \ Calibration
i Buffer recognition TEC
i Immerse sensor in buffer 3
Exit with 2 point calibration
Continue
13 For two-point calibration, select Exit with 2 point calibration with
<> <> and confirm with <START/ENTER>.
The calibration is completed as a two-point calibration.
The new calibration values are displayed as an informative
message ( ).
i
You have the following options:
 Accept the new calibration values with <START/ENTER>.
Subsequently, the calibration record is displayed and output
to the interface at the same time.
 To switch to the measured value display without accepting
the new calibration values, press <M> (short pressure) or
<ESC>.
Operation
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