Galvanic Applied Sciences 943-TGS-CE, Operation Manual

Page: 60 / 158

Revision 5 60 August 2021
4.5.1 Fault Conditions
Table 9 describes each of the fault conditions listed in the fault table on the Indicators panel.
Table 9: Analyzer Faults
Fault Explanation
Cell Temperature
Measurement cell temperature is either below Low Cell
Temperature setpoint or above High Cell Temperature
setpoint.
High High Sulfur
Measured sulfur vapour content exceeds high sulfur vapour
concentration fault setpoint
Measure Range
Spectrometer signal is out of range while analyzer is
measuring sample (signal either off scale or too low).
Reference Range
Spectrometer signal is out of range while analyzer is in back
purge mode (signal either off scale or too low)
Dark Range
Spectrometer dark level (i.e. signal when no light is present) is
either too low or too high.
I/O Board
System computer is unable to communicate with Input / Output
board and / or spectrometer
Some of these faults may clear by themselves (particularly the cell temperature fault and the
high high sulfur fault) but others may require maintenance or even hardware replacement to
resolve. Refer to Section 7.2 for more detail on how to troubleshoot active faults.
4.5.2 Warning Conditions
Table 10 describes each of the warnings listed in the warning table on the Indicators panel.
Table 10: Analyzer Warnings
Warning Explanation
Cabinet Temperature
Control cabinet internal temperature is either below low
cabinet temperature setpoint or above high cabinet
temperature setpoint.
High Absorbance
Measured absorbance as shown on the Absorbance spectrum
exceeds 2.0 AU when analyzer is in sampling mode. Typically
indicates that measured concentration of at least one
component is out of range
High Integration Period
Integration period required to obtain an in-range spectrometer
signal when analyzer is in back purge mode > 500
milliseconds.
Low Reference Peak
Spectrometer signal peak height when analyzer is in back
purge mode <24000 A/D counts
High Sulfur Vapour
Measured sulfur vapour content exceeds high sulfur vapour
concentration warning setpoint
Some of these warnings may clear by themselves, particularly the cabinet temperature
warning and the high sulfur vapour warning, but others will not be able to be cleared without
performing maintenance on the analyzer. Refer to section 7.2 for more detail on how to
troubleshoot active warnings.