Polarographic Dissolved Oxygen Measurement - Thermo Scientific Orion Star Manual Del Usario

Polarographic Dissolved Oxygen Technique

Polarographic Dissolved Oxygen Measurement

Note: Turn on the automatic datalog feature to send measurements to the meter
datalog at the frequency specified in each measurement mode. Refer to the Data
Archiving and Retrieval section for details. If the automatic datalog feature is off,
connect the meter to a printer or computer to record the measurements.
1 . Rinse the dissolved oxygen probe with distilled or deionized water .
Shake off any excess water and blot the probe dry with lint-free tissue .
2 . Place the dissolved oxygen probe into the sample .
a . If the meter is in the continuous measurement mode, it will start reading
immediately and continuously update the display . The mg/L or % sat icon
will flash until the reading is stable . Once the reading is stable, log and print
the measurement by pressing
stirrer is enabled, press
the stirrer before removing the probe and stirrer from the sample .
b . If the meter is in the AUTO-READ measurement mode, press
the reading . The AR icon will flash until the reading is stable . Once the
reading is stable, the meter will log and print the reading and freeze the
display . If a benchtop meter is used and the stirrer is enabled, the stirrer will
turn on when
BOD AUTO-STIR probe is used, press the button on the probe to start the
AUTO-READ measurement .
Note: Benchtop Star Plus dissolved oxygen meters allow the measurement
and stirring functions to be controlled by the AUTO-STIR probe when the
meter is in the AUTO-READ measurement mode. Press the button on the
AUTO-STIR probe to start and stop measurement and stirring functions.
c . If the meter is in the timed measurement mode, it will start reading
immediately and continuously update the display . The meter will log
and print the measurement at the frequency specified in the setup menu .
If a benchtop meter is used and the stirrer is enabled, press
the stirrer . Press
and stirrer from the sample .
EN-28
. If a benchtop meter is used and the
to start the stirrer . Press
is pressed and turn off when the reading is stable . If the
again to turn off the stirrer before removing the probe
Thermo Scientific Orion Star
again to turn off
and Star Plus Meter User Guide
™
to start
to start