Galvanic Applied Sciences 943-TGXeNA, Руководство по эксплуатации

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Revision 5 49 August 2021
Figure 25: Back Purge Indicator and Manual Controls
The back purge indicator shows the current back purge status. If it is green, this indicates
that the analyzer is currently drawing sample into the measurement cell. If it is red, this
indicates that the analyzer is currently in back purge, either due to the analyzer being
manually placed into back purge OR due to a fault condition causing an automatic back
purge OR because the analyzer is currently carrying out a zero calibration cycle.
Below the Back Purge Indicator are two check boxes which can be used to manually set the
analyzer into back purge or sampling mode. To choose which mode is active, select the
desired mode using the FIELD NEXT / FIELD PREV buttons and press ENTER to choose.
Alternatively, pressing the PURGE button will switch to the currently inactive mode (i.e.
pressing purge while the analyzer is sampling will cause it to switch to back purge mode and
vice versa).
Prior to performing any maintenance, particularly if any sample system tubing is
to be disconnected, the analyzer should be placed into back purge mode and
purged for at least 5 minutes. This will prevent any toxic gases from remaining in
the sample system if tubing is to be disconnected.
If Sample is selected but the back purge indicator remains red, this indicates that a fault
condition likely exists. Once the fault condition(s) are cleared, the analyzer will automatically
return to sampling mode after first performing a zero calibration cycle. If the analyzer is set
to back purge mode while a fault condition exists, the analyzer will NOT automatically return
to sampling mode when the fault condition(s) are cleared.
4.4 Analysis 2 Panel
The Analysis 2 panel shown in Figure 26 displays a variety of analysis information and system
operating parameters.
Figure 26: Analysis 2 Panel