Hach-Lange ORBISPHERE 510_51x Basic User Manual - Manual (Page 15)

Option Description
Pressure Select the barometric pressure units.
Temperature Select the temperature units.
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.
TPO and TPA parameters (portable instrument)
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.
Stop criteria configuration (portable instrument)
Available in Sample measurement mode, this setting allows configuration of the stop criteria for
each channel.
Note: The parameters available for configuration depend on the type of stop criteria being defined.
1. Select Menu / Main / Configure chan x and press the Stop criteria button.
Option Description
Above
threshold The stop criteria is met when the gas concentration is greater than the parameter entered
in Threshold
Below
threshold The stop criteria is met when the gas concentration is lower than the parameter entered in
Threshold
Stability The stop criteria is met when the variation of the gas concentration is smaller than the
parameter entered in Variation
Time The stop criteria is met when the elapsed time reaches the Max. time parameter.
Note: The number of samples taken into account to compute the Variation can be
adjusted using the parameter Depth.
English 15