Galvanic Applied Sciences 943-TGX-CE, Operation Manual

Page: 42 / 151

Revision 4 42 April 2020
An analyzer with at least one fault condition present will be unable to carry out sampling
and analysis of the process gas. When the fault condition clears, the analyzer will
automatically perform an auto-zero calibration and then return to normal sampling mode.
3.5.2.2 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.
3.5.2.3 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