Chapter 6
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Using the DO/RDO Channel
Measurement Procedure
Prepare the sensors according to the instructions in the sensors manuals. Connect all
electrodes, sensors and probes to be used to the appropriate meter inputs. Make sure the
sensors are recently calibrated and working correctly.
Ensure the meter measurement mode is set to the desired measurement parameter. For Star
A216 meters, press the f3 (channel) key until the desired channel or channels are shown in the
measurement mode.
1.
Rinse the sensors with distilled water or appropriate solution, blot gently with a lint-free
tissue to remove excess water and place into the sample.
2.
Start the measurement and wait for the reading to stabilize or reach the predefined time.
a.
Auto-Read: Press the measure (esc) key to start the measurement. If using a stirrer
probe, the stirrer probe will start stirring when the measure (esc) key is pressed and
stop stirring when the measurement stabilizes.
b.
Continuous: Measurements will start immediately when in the measurement mode. If
using a stirrer probe, press the stirrer key to start and stop stirring.
c.
Timed: Measurements will start immediately when in the measurement mode. If using a
stirrer probe, press the stirrer key to start and stop stirring.
3.
Once the measurement is stable or reaches the set time, record all applicable parameters.
a.
Auto-Read: Once the measurement is stable, it will be locked and held on the display
and the AR icon will remain solid. If the data log function is enabled, the measurement
will be exported to the data log.
b.
Continuous: The flashing Stabilizing icon will update to the solid Ready icon when the
measurement is stable. If the data log function is enabled, press the log/print key to
export the measurement to the data log.
c.
Timed: Measurements will be recorded at the predefined time interval. If the data log
function is enabled, the
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icon will be shown when each time interval has elapsed and
the measurement is exported to the data log.
4.
Remove the sensors from the sample, rinse with distilled water or appropriate solution, blot
gently with a lint-free tissue to remove excess water and place into the next sample.
5.
Repeat steps 2 through 4 for all samples. When all samples have been measured, store the
sensors according to the instructions in the sensor manuals.
Thermo Scientific
Orion Star A210 Series Benchtop Meter User Manual
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69
Summary of Contents for Orion Star A210 Series
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