Fid Baseline Output At Maximum (~8 Million) - Agilent Technologies 7890 Series Troubleshooting Manual

FID Baseline Output at Maximum (~8 Million)

Agilent 7890 Series Troubleshooting
If the FID output seems to be stuck at a very high value (up to 8
million counts), check for a shorted collector.
1
Check if the interconnect spring has been bent.
collector assembly and visually inspect the spring.
2
Disassemble the collector assembly and visually check for
rust buildup on any parts. Replace parts as needed. To avoid
this problem, operate the detector at >300 °C.
3
Check for carbonization in the detector due to injection or
aromatic or chlorinated solvents. To avoid this problem,
operate the detector at >300 °C.
collector and operate the detector using higher air and
hydrogen flows (air must be 450 mL/min, hydrogen at 35
mL/min).
Chromatographic Symptoms
Remove
Reassemble and install the
3
the
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