Measurement Menu; Instrument Configuration - Hach ORBISPHERE 51x Manual De Usuario

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7.2.2 Statistic view
This feature offers statistical data to match with Total Quality Management tools to better analyze
how a process behaves. The statistics are calculated from the data in the measurement file and
values updated each time a new measurement is added.
7.2.3 Diagnostic view
The diagnostic view contains important information but is only really useful for troubleshooting
purposes.

7.3 Measurement menu

7.3.1 Instrument configuration

7.3.1.1 TPO or TPA calculation (portable instrument)
The TPO (Total Package Oxygen) and TPA (Total Package Air) features are available on the
portable instrument for an EC 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.
7.3.1.2 Continuous mode or sample mode (portable instrument)
Continuous mode is typically used for process measurement, whereas sample mode is aimed at lab
measurements of small volume individual samples such as cans, bottles, etc. The measurement
mode is a parameter defined for the entire instrument, not for each channel.
7.3.1.3 Continuous or sample mode selection
1. Select Config. instrument from the Measurement menu:
Option
Measurement mode
Pressure
Temperature
7.3.1.4 Sample mode measurements (portable instrument)
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.
Description
Continuous mode for on line process.
Sample mode for lab sample analysis (portable instruments only).
Select the barometric pressure units.
Select the temperature units.
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