Recommended action
Confirm proper operation of all sample system components and ability to provide
adequate sample flow.
6.1.29
Flame Photometric Detector Board 1 Comm Failure
The gas chromatograph (GC) cannot detect the flame photometric detector (FPD).
Recommended actions
1. Power the GC down completely.
2. Check that all cables are securely connected to the FPD interface module.
3. Power up the GC.
4. If the message appears again, replace the FPD photomultiplier tube (PMT)
module.
6.2
No power to flame photometric detector (FPD)
Recommended actions
1. Check cable (7A00454G01), connectors, and terminals.
2. Check flex cable.
3. Check that the voltage from the lower terminal is 25 Vdc.
6.3
Can't ignite flame photometric detector (FPD)
Recommended actions
1. Check the flow.
Gas flow rates are measured at exhaust while oven reaches to set temperature.
The air flow should be 150 cc/min, and the H
2
flow should be 100 cc/min.
2. Check igniter resistance in ohms.
The resistance should be 0.6 to 1 ohms.
3. Ensure that the flame temperature is > 493.1 °F (220 °C) when the ignitor is first
turned on and then goes down to 413.1 °F (140 °C).
4. Ensure that there are no restrictions at the exhaust line.
6.4
No peaks showing
Recommended actions
1. Ensure that the flame is on.
2. Ensure that the sample gas has been injected.
3. Check carrier gas flow.
4. Check sample flow.
Troubleshooting
Reference Manual
June 2022
2-3-9000-744
192
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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