13 Detector
13.2 Hydrogen flame ionization detector (FID)
157
GC-2010 Plus
13.2.3.2 Parameter list
H
2
Range: 0.0−100.0 ml/min, Default: 40.0 ml/min
MAKE UP
Range: 0.0−100.0 ml/min, Default: 30.0 ml/min
Make up gas is supplied to the detector to optimize its sensitivity. For the FID, both
nitrogen and helium can be used. Nitrogen offers higher absolute sensitivity and higher
baseline noise than helium.
GAS TYPE
Selection: N
2/He/Ar, Default: He
Set the type of gas used as the makeup gas.
Do not use hydrogen for make up gas. Do not select Ar for FID make up gas.
Air
Range: 0.0−1000.0 ml/min, Default: 400.0 ml/min
OPTIMAL FLOW (Refer to Fig. 3.4.5-Fig. 3.4.7.)
Normally, set the flow rate of the makeup gas, hydrogen and air as follows to maximize
the FID sensitivity.
Makeup gas : Approx. 30 ml/min
Hydrogen : Approx. 40 ml/min
Air : Approx. 400 ml/min
13.2.3.3 PF menu
PF menu Description
Reference
section
Program
The flow rate of makeup gas, hydrogen and air supplied to detector can be
controlled by a program.
13.2.3.4
On/Off
Select “Off” to stop gas flow.
Select “On” to restart the gas flow.
Default value is “On”.
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Offset
Performs offset calibration of APC sensor.
This calibration improves the reproducibility of results.
3.6
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