6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector - Main Components Igniter Teflon Insulator Collector Interconnect/Spring Electrometer Jet Heater/Sensor Assembly Detector Base Assembly Column Adapter

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector - Theory of Operation 1. H2 - Air Flame 2. Sample is burned in flame 3. When burned produces charged Ions 4. Ions attracted to collector 5. Collector current converted to output via Electrometer

6890 GC Detectors - The Flame Ionization Detector FID EPC Flow Manifold Detector Pneumatic Connection Gas Connections to GC FID Flow Measurement Tool FID Jet Plugged FID Jet

6890 GC Detectors - The Flame Ionization Detector FID Igniter Replacement Complete Detector Assembly FID Collector Removal

6890 GC Detectors - The Flame Ionization Detector - Jets Jets for Capillary-Optimized FID Jet Type Part Number Jet Tip id Capillary G1531-80560 0.29 mm 0.011" High Temp G1531-80620 0.47mm 0.018" Jets for Adaptable FID Jet Type Part Number Jet Tip id Capillary 19244-80560 0.29mm 0.011" Packed 18710-20119 0.47mm 0.018" Wide bore 18789-80070 0.030" Packed High Temp Capillary 19244-80620 0.47mm 0.018"

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector 6890 EPC Module Original Design New Detector Mini-fold

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector

6890 GC Detectors - The Flame Ionization Detector Flame won't light Measure Flows Clean/Replace Jet (6850 Jet Test) Are column and fittings tight ? Is the tank pressure high enough ? Is the Detector ON ?

6890 GC Detectors - The Flame Ionization Detector Noisy Baseline Turn off Air/H2 No Contamination Still Noisy problem Yes Electronic/Mechanical Problem Check: Filters,Traps,Gasses Clean Jet Replace Detector Verify Column max Board/ interconnect/ Teflon Insulators

HP 6890 - Flame Ionization Detector Planned Maintenance - Replace Jet (per Customer) - Clean/Replace Collector - Inspect interconnect and spring - Inspect ignitor glo-plug - replace if necessary - Measure H2/Air/Makeup Flows - Turn off H2 and measure FID Leakage Current - < 2pA - Ignite FID - monitor background and noise <20 pA and stable - Run customer sample or Agilent Checkout per 6890 Service Manual section 600.