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Thermo Scientific Orion Star A216 Benchtop and Star A326 Portable pH/RDO/DO Meter Reference Guide
Manual Dissolved Oxygen Calibration
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method can be used to calibrate the DO probe to the value achieved by a Winkler titration. A manual calibration
involves performing a Winkler titration and using that sample as a calibration standard. The oxygen level result
from the titration is entered in a manual calibration as the dissolved oxygen value. This correlates the meter input
to the Winkler titration. This method is inherently less accurate, due to the possibility of titration errors.
Note: In most calibration screens, press
f1 (esc)
to return to the measurement mode without saving the calibration.
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f1 (cal)
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or
to highlight
DO/RDO – Channel
and press
f2 (select)
.
2. Press
or
to highlight
Manual
and press
f3 (select)
.
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f3 (start)
.
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a. Press
f2 (accept)
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b. Press
f3 (edit)
to access the numeric entry screen and edit the dissolved oxygen value.
i. Press
,
,
or
to highlight a number or decimal point, press
f3 (enter)
to select
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ii. Press
f2 (done)
to exit the numeric entry screen.
iii. Press
f2 (accept)
to accept the entered dissolved oxygen value.
6. Press
f3 (cal done)
to export the data to the calibration log or press
f2 (print)
to export the data to the
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