Galvanic Applied Sciences 943-TGXeNA, Руководство по эксплуатации

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Revision 5 47 August 2021
The graphical trend displayed below the Air Demand field shows the trend in the air demand
data over a recent period of time, with the current value at the right side of the graph. The x-
axis (time) and y-axis (concentration) ranges of this graph can be adjusted on the
Configuration Panel Display Sub-panel (refer to Section 4.8.3). This trend is updated once
per second.
4.3.4 Relay Indicator Fields
The relay indicators at the bottom right of the Analysis 1 panel indicate the current state of
the analyzer’s four relay outputs. The relay indicators are shown in Figure 23.
Figure 23: Relay Indicators
The relay indicators provide at-a-glance status information. If all the indicators are green,
this indicates that the analyzer is functioning normally with no faults or warnings active. If the
Status indicator is red, this indicates the analyzer has at least one fault active, and is unable
to sample until the fault condition(s) are cleared. If the Service indicator is yellow, this
indicates that maintenance will be required soon. Refer to the Indicators panel to diagnose
which fault(s) and / or warning(s) are active. See Section 4.5 for more details about specific
faults and warnings. If Mode and Control are both yellow, this indicates the analyzer is
carrying out a zero calibration. For more information on the relay outputs, refer to section
3.3.2.
4.3.4 Manual Zero
The Manual Zero control is used to manually initiate a zero calibration cycle. It is shown in
Figure 24.
Figure 24: Manual Zero Control
The Model 943-TGXeNA performs a zero calibration in order to check and adjust the
analyzer’s zero baseline. It is ONLY performed when the analyzer is in back purge and the
measurement cell is filled with a gas that doesn’t absorb UV radiation in the wavelength
range of interest (i.e. instrument air or nitrogen). The zero calibration sets the absorbance
baseline to 0 AU across the entire measurement wavelength range during this process. To
initiate a Manual Zero Calibration cycle, simply use the FIELD NEXT / FIELD PREV buttons
to highlight the Manual Zero control, then press ENTER. The zero calibration sequence is
identical whether triggered manually using the Manual Zero control, automatically when all