SERVOPRO CHROMA Gas Analyser
47
04400001A / Revision 7
•
Starting
The plasma is restarted when the following is true
-
“Plasma off” alarm is act
ive
-
“Low carrier flow” alarm is
inactive
-
Starting
mode
is
automatic
(see
Section
SYSTEM
CONFIGURATION MENU
for the
Starting mode
definition)
-
No cycle is progressing (real-time chromatogram stopped or between cycles)
•
Plasma ON
When the cell signal counts go above the
starting counts after a “Plasma
OFF”, it indicates that the plasma is physically on.
•
RTD problem
When an oven temperature falls below 10 degrees Celsius.
•
Carrier flow deviation
When the carrier flow is higher or lower than the carrier flow set point by 2
cc/min, the injection is still possible and the system continues to report
process values.
•
Oven temperature deviation
When an oven temperature is higher or lower than the oven temperature set
point by 2 degree Celsius or more.
•
Communication problem
When the user interface (PC) cannot exchange any data with an electronic
board inside the analyser.
2)
Peak value alarms:
Peak value alarms do not impact the system status alarm dry contact output.
•
Alarm 1 peak #
When the concentration of impurity is greater than the Alarm 1 for the peak.
•
Alarm 2 peak #
When the concentration of impurity is greater than the Alarm 2 for the peak.
•
Overscale peak #
When the concentration of impurity is greater than the actual scale of the
peak.
