Revision 5
40
August 2021
3.3.2.2
Service
The
Service
output indicates whether there is an issue with the analyzer that requires
operator attention. Table 4 describes the Service relay states.
Table 4: Service Relay States
Condition
Display Indicator Colour
Explanation
Normal
Green
All monitored system parameters are
within normal limits. No faults are present
Warning
Red
At least ONE of the following conditions
is true:
•
Control cabinet interior
temperature is outside specified
range
•
Spectrometer integration period
>500 ms
•
Sample Absorbance >2.0 AU
•
Sulfur vapour concentration
exceeds specified warning set
point
•
Spectrometer
peak height
at
last zero calibration is too low
An analyzer with any active warnings will continue in sampling mode and provide valid
analysis results, although warnings indicate that there is an issue with the analyzer that,
if left unchecked, could lead to a fault condition. The warning condition will clear when the
parameter that caused the warning condition returns to its normal range.
3.3.2.3
Mode
The
Mode
output indicates when a zero calibration, either manually requested or
automatic, is in progress. Table 5 describes the Mode relay states.
Table 5: Mode Relay States
Condition
Display Indicator Colour
Explanation
Run
Green
Analyzer is not performing a zero-
calibration run, either manual or
according to an automated schedule.
Calibrate
Yellow
One of the following conditions is true:
•
A clock-triggered automatic zero
calibration cycle is in progress
•
A manually requested zero
calibration cycle is in progress
•
Analyzer power is off
When this indicator is in the ‘Calibrate’ state, the analyzer is not measuring the process
tail gas. After a calibration cycle is complete, the Calibrate state will persist for a specified
time interval (the Zero Hold Interval), allowing process gas to reach the measurement cell
Содержание 943-TGXeNA
Страница 130: ...Revision 5 130 August 2021 Figure 82 Oven Cabinet Door Removed ...
Страница 131: ...Revision 5 131 August 2021 Figure 83 Control Cabinet Door Removed ...
Страница 132: ...Revision 5 132 August 2021 Figure 84 Power Steam Air Signals Connection Details ...
Страница 133: ...Revision 5 133 August 2021 Figure 85 AC Wiring Schematic ...
Страница 134: ...Revision 5 134 August 2021 Figure 86 DC Signals and Wiring Diagram ...
Страница 135: ...Revision 5 135 August 2021 Figure 87 Flow Diagram ...