6.1.11
GC Idle
Potential cause
Someone has placed the gas chromatograph (GC) in Idle mode. The GC is not running an
analysis.
6.1.12
Heater (1-8) Out of Range
The gas chromatograph (GC) has failed to regulate heater zone temperatures for the
indicated heater to within preset limits.
Recommended actions
1. Check temperatures within the GC, using Rosemount MON2020 or the local
operator interface (LOI).
Be aware that the GC may generate this alarm following start-up or if the set
point has been changed.
2. Check wiring, looking for splits or loose connections at the termination board
(for both the heaters and the RTDs.
3. If necessary, replace the defective heater and/or RTD.
6.1.13
Flame Out
Detector 1 Flame Out
The flame ionization detector (FID) or flame photometric detector (FPD) will not light or
has extinguished.
Potential cause
The FID is out.
Recommended actions
1. Use the front switch panel or Rosemount MON2020 to ignite the flame.
2. If unable to sustain the flame, confirm that both fuel and air cylinders are
connected and contain sufficient pressure.
3. Confirm that the fuel and set points are set to achieve the factory-desired
mixture.
4. Confirm that there is no blockage at the FID exhaust outlet, such as a cap or ice.
5. Check that the wiring connections are secure for the FID, both on the FID cap
and at the termination board.
6. If necessary, replace the FID module.
To ignite the flame manually:
1. Connect the air to the inlet and slowly bring the pressure to 60 psig (4.1 barg).
2. Connect hydrogen to the inlet and slowly bring the inlet pressure to 60 psig
(4.1 barg).
Troubleshooting
Reference Manual
June 2022
2-3-9000-744
186
Emerson.com/Rosemount
Summary of Contents for Rosemount 700XA
Page 1: ...Reference Manual 2 3 9000 744 Rev L June 2022 Rosemount 700XA Gas Chromatograph ...
Page 6: ...TxD TD or Sout Transmit data or signal out 6 ...
Page 30: ...Overview Reference Manual June 2022 2 3 9000 744 30 Emerson com Rosemount ...
Page 100: ...Installation and start up Reference Manual June 2022 2 3 9000 744 100 Emerson com Rosemount ...
Page 182: ...Operation and maintenance Reference Manual June 2022 2 3 9000 744 182 Emerson com Rosemount ...
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