Thermo Scientific MIRAN 205B Series, Инструкция по эксплуатации

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Chapter 7 Configuration and Setup
7-17
ANALYSIS SETUP PAGE 2
To continue with the analysis setup, press the down arrow key in the Analysis Setup
Menu Page 1. The Analysis Setup Menu Page 2, shown below, is displayed.
┌────────────────────────────────────────┐
│╒════════ SUMMARY ════════╕ ANALYSIS SETUP │
││ _Batch sampling │ 1=Batch sample │
││ _Zero warning │ 2=Zero warning │
││ _Autozero │ 3=Autozero │
││┌───── Data Views ──────┐│ ───── │
││√ Conc √ Max √ Min √ Avg │ 4=View enable │
││√ STEL √ Absb √ Intn √ Gain │ │
│└───────────────────────┘ =More │
└────────────────────────────────────────┘
Analysis Setup Page 2 Menu
The current application setup summary is displayed on the left and the menu of selections
on the right.
Batch Sample
Batch sampling is typically employed in multi-gas applications or spectral scanning
because the sample should be static when measuring each wavelength. That is, the
concentration in the gas cell should not change when measuring the first wavelength
compared to the last wavelength. This is critical because the concentration of the first gas
can be related to the compensation factor of the last gas. If those ratios change because
the sample has changed, the results can be incorrect.
In the batch sampling process, the analyzer internal pump pulls a sample into the gas cell
for the application defined batch purge time (typically 20 seconds), the pump is shut
down, and each component is analyzed at its defined wavelength. After the data is
displayed, the cycle is repeated.
To turn the batch sampling feature on or off, press
3
(Batch sample) from the second
Analysis Setup Menu. Upon presentation of the next display, press
1
to turn the batch
sampling feature off or 2 to enable the feature. The display responds "-ACCEPTED-."
When using Reference Compensation in Single Sample Mode, Batch Sample may be
turned off.
Zero Warning
The Zero Warning feature reminds about rezeroing the analyzer in a set length of time or
when the absorbance drifts from the reference by an established amount. To access this
feature, press
2
(Zero warning) from the Analysis Setup Menu Page 2. Upon presentation
of the next display, press
1
to set a time warning or
2
to select a reference deviation
warning.