173
Agilent 7890 Series Gas Chromatograph
Troubleshooting
Agilent Technologies
8
Troubleshooting Tasks
To Measure a Column Flow 174
To Measure a Split Vent or Septum Purge Flow 178
To Measure a Detector Flow 180
To Perform the GC Self-Test 185
To Check or Monitor Split Vent Line Backpressure 186
To Run the Inlet Trap Check 189
To Perform a SS Split Vent Restriction Test 191
To Check a Split Vent Line for Contamination 192
To Adjust the FID Lit Offset 194
To Verify That the FID Flame Is Lit 195
To Verify FID Ignitor Function During Ignition Sequence 196
To Measure FID Leakage Current 197
To Measure FID Baseline Output 198
To Isolate the Cause of FID Noise 199
To Measure NPD Leakage Current 200
To Check for a Plugged FID Jet 201
To Check for a Plugged NPD Jet 202
To Verify That the NPD Bead Is Ignited 203
To Verify That the FPD Flame Is Lit 204
To Adjust the FPD Lit Offset 205
When to Change Gas Purifiers 206
To Ignore a Device’s Readiness State 207
To Use the Stopwatch 208
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