wtw pHotoFlex, Operating Manual

Page: 60 / 111

Operation pHotoFlex / pHotoFlex Turb
60 ba75491e05 04/2009
Continuing for two-point
calibration
(Cal. type TEC)
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).
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.
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:
z
Accept the new calibration values with <START/ENTER>.
Subsequently, the calibration record is displayed and output
to the interface at the same time.
z
To switch to the measured value display without accepting
the new calibration values, press <M> (short pressure) or
<ESC>.
i
Buffer value = 10.01
i
U = -177 mV
i
Temperature = 24.8 °C
Terminate AutoRead
pH & ORP \ Calibration
i
Buffer recognition TEC
i
Immerse sensor in buffer 3
Exit with 2 point calibration
Continue
pH & ORP \ Calibration