Emerson Rosemount 370XA System Reference Manual page 189

System Reference Manual
7P00370-H01
Alarm
Warm Start Failed
Heater 1 Out Of Range
Heater 2 Out Of Range
Detector 1 Scaling Factor Failure
Carrier Pressure Low
Carrier Pressure Out Of Range
7 - 2
Description and Suggested Actions
The GC has failed to return to analysis mode after a
power failure. If the GC is in Auto Analysis mode and the
power is lost, when power is reapplied the unit will heat up
and analyze calibration gas until all of the component
peaks are identified. When all of the peaks are identified
and the analysis is good, the GC will go back into Auto
Analysis mode. However, if the peaks are not identified
within the time period indicated in the Max Warm Start
Delay field on the System window, the GC will raise the
Warm Start Fail alarm and go into Idle Mode and will not
analyze stream gas.
The Analytical Oven Heater failed to reach the set-point
within 15 minutes or reads higher than the setpoint. Refer
to the Heater Failure troubleshooting guide.
For the default configuration of the 370XA, this is not
used. The Switch setting on the Heaters screen for
Heater 2 must be set to Fixed ON and the Fixed PWM
Output set to 0.
The scaling factor generated for the high and low gain
preamp channel was outside the acceptable range of
values. This is typically caused by a fault on the analyzer
board, which should be replaced.
The carrier gas pressure, as measured on the carrier gas
pressure sensor on the analytical module, is too low.
Check the regulated pressure at the bottle is at 90 PSI
(6.2 BarG), and confirm the isolation valves between the
bottle and the 370XA are all open. Refer to
pressure" on page 7-9 for help with troubleshooting this
issue.
The carrier gas pressure, as measured on the carrier gas
pressure sensor on the analytical module, is outside of
the control limits. Check the regulated pressure at the
bottle is at 90 PSI (6.2 BarG). If the regulated pressure is
OK, check the connections on the Carrier Pressure
Control Valve and the pressure sensor. Refer to
pressure" on page 7-9 for help with troubleshooting this
issue.
370XA Gas Chromatograph
APRIL 2014
"Carrier
"Carrier