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7.3.2.4 Measurement interferences
These options are available to take into account the influence of some components or gases in the
sample during measurement. All available interference corrections are disabled by default.
1. Select the Interferences button on the Measurement configuration screen:
Option
Chlorinity/Salinity
Chlorinity/Salinity conc. For chlorinity or salt, it is required to enter the actual concentration in the sample.
7.3.2.5 Sample mode measurements
1. Press the start/stop function key (on the header bar) to initiate the sample measurement.
The text In progress and the measurement value are displayed sequentially. The measurement
process stops when the stop criteria selected are fulfilled.
2. The measurement process is stopped when:
• The stop criteria is fulfilled, typically when the gas concentration reaches the set threshold
• The start/stop function key has been pressed
• The Maximum time criteria is reached
• An error has occurred (e.g. sensor out)
3. When the sample measurement stops because the stop criteria are fulfilled, the gas
concentration and temperature are no longer refreshed. They indicate the measurement when the
stop criteria was reached. If the channel was configured for TPO or TPA calculation, enter the
parameters.
4. If the sample mode is stopped for another reason (user abort, max. time, or measurement error),
the aborted message is displayed.
7.3.2.5.1 TPO or TPA calculation
The TPO (Total Package Oxygen) and TPA (Total Package Air) features are available on the
instrument with a sensor measuring oxygen. To initiate these options, the instrument must be
configured in Sample mode and the TPO or TPA calculation must be enabled. The operator also
needs to ensure the package is shaken for about 5 minutes before measuring, and to know the total
volume of the package and the total volume of the contents of the package.
7.3.2.5.2 TPO and TPA parameters
1. Overflow volume: Total package size
2. Net content volume: Volume of liquid in the package
3. Press the Compute button to calculate the TPO or TPA. The parameters can be changed and the
value recalculated if necessary.
TPO values are displayed in ppm, TPA values in mL.
4. To store the measurement, press the OK button.
7.3.2.5.3 Stop criteria configuration
The stop criteria setting is available in theSample mode measurement option in the channel
configuration window.
Note: The parameters available for configuration depend on the type of stop criteria being defined.
4.0
4.3
Description
Select Chlorinity, Salt or All disabled.
4.4
5.6
7.0
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