FID detector, Agilent 6890
The flame ionization detector (FID) responds to compounds that
produce ions when burned in a H1oairflame. These include all organic
compounds, although a few (e.g., formic acid, acetaldehyde) exhibit
poor sensitivity.
Compounds producing little or no response include:
Measured at the jet tip.
This selectivity can be advantageous: for example, H2O or CS2, used
as solvent, do not produce large solvent peaks.
The system is linear for most organic compounds, from the minimum
detectable limit through concentrations greater than 10% times the
minimum detectable limit. Linear range depends on each specific
compound; it is directly proportional to sensitivity of the FID toward
the given compound.
In general, where sample components of interest are in high
concentration, increased air flow may be necessary (up to 650 ml/min).
Where components of interest are in low concentration, reduced air
flow rates are acceptable (375 to 425 ml/min).
For maximum sensitivity, it is recommended that a standard sample
be made containing components of interest in concentrations expected.
By experimenting with different carrier, air, and H2 flow rates, the
standard is used to determine flow rates giving maximum response.
Flame Ionization Detector (FID)
Description HP Part No. Qty
- Collector Assembly: G1531-60690
- PTFE Chimney (optional) 19231-21050
- Collector Nut 19231-20940
- Spring Washer 3050-1246
- Ignitor (Glow Plug) Assembly 19231-60680
- Ignitor Cable Assembly G1531-60680
- Upper/Lower Collector Insulator G1531-20700
- Collector Body G1531-20690
- Spanner Nut (Collector) 19231-20980
- Collector Mount G1531-20550
- Collector Housing G1531-20740
- Gasket 0905-0915
- Screw, M4 x 25 mm, Torx, T20 0515-2712
- Screw, M4 x 10 mm, Torx, T20 0515-2495
- Interconnect Clamp 19231-00040
- FID Interconnect Assembly G1531-60710
- FID Signal Board G1531-60010
- FID Interface Board G1531-60020
- Screw (captive) M4 x 20 mm, Torx, T20 1390-1024
- Mounting Pallet G1531-40020
- Base Spanner Nut 19231-20990
- Thermal Strap G1531-00100
- Base Weldments
- Packed Column FID G1531-80580
- Capillary Column FID G1531-80630
- Heater/Sensor Assembly G1531-61140
- Nut W/Lock Washer 0535-0043
- FID Block Insulation G1531-00030
- FID Seal Insulation
- Capillary G1531-00130
- Packed G1531-00160
- Packed FID Column Adapters
- FID/NPD Capillary Column 19244-80610
- FID/NPD 1/8 in. Packed Column 19231-80520
- FID/NPD 1/4 in. Packed Column 19231-80530
- Nutwarmer Insulation (Order qty 3) 19234-60715
- Nutwarmer Cup Assembly 19234-60700
Flame Ionization Detector (FID) Manifold Assembly
Description HP Part No. Qty
- EPC Control Valve (Order no. G1531-60610 ) G1531-60541
- NON-EPC 2 Way Valve G1531-60530
- O-Rings HP M8 (Order No. 5180-4181, 12/pkg) 0905-1039
- Screw, M4 x 10 mm, Torx, T20 0515-2495
- EPC Control Module Assembly G1531-60520
- Non-EPC Control Module Assembly G1531-60500
- Screw, M3 x 25 mm, Torx T10 0515-0683
- Screw, M3 x 8 mm, Torx, T10 0515-0655
- Make-up Gas, Manual Forward G1531-60570
- Pressure Regulator, 0-100 psi G1531-60630
- Fid Manifold Regulator Brazement G1531-80520
- Supply Gas Jumper Weldment G1531-80550
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