Hach AutoCAT 9000, Инструкция по эксплуатации

Страница: 62 / 176

Iodine
Iodine
Page 60
50081_IodineCalibration.fm
17.
The calibration titration
starts by filling the burette
with titrant and
subsequently dispensing a
3.4-mL predose of Iodine
into the calibration sample.
This will bring the electrical
signal into measurable
range.
18.
The Start Timer will
begin to allow the electrode
to stabilize before data is
collected.
After the electrode has
stabilized, the AutoCAT will
begin data acquisition and
plot the titration curve in real
time.
19.
The Zoom Range
Determination window will
display the titration curve.
Select and move the vertical
lines (cursor) to define the
range of data points for
analysis.
Note: Defining the range of
data points eliminates
undesirable portions of the
titration curve.
Select type of end point
determination:
Press the
CHECK MARK
for
Automatic and proceed to
step 22 or press
DEL
for
Manual and proceed to
step 20 .
20.
Select two line
segments, one on each side
of the titration end point, by
positioning the cursors at
the beginning and end of
each segment.
Press the
CHECK MARK
to
confirm changes.
Press
DEL
to return to the
previous window.
21.
Press the
CHECK MARK
to accept the analysis.
Proceed to
step 24 .
Press
DEL
to return to the
previous window (Zoom
range determination) to
adjust the linear segments
and reanalyze the data.
22.
The AutoCAT will run
the analysis based on the
automatic selection of linear
segments.
Note: This algorithm requires
approximately 60 seconds to
complete the analysis.
23.
Press the
CHECK MARK
to accept the analysis.
Press
DEL
to return to the
previous window (Zoom
range determination) to
adjust the linear segments
and reanalyze the data.
24.
Press
1
to select
Continue.
Press
2
to select More Details
and view analysis statistics
specific to the current
calibration.