Detector Gain
Wrong Carrier
Gas
Attenuation Too
Low
Check photomutliplier
gain setting and set to
data sheet value
Verify the correct
carrier gas is
being used
CHROMATOGRAM
OVERSIZED OR
OFF SCALE
Splitter Out of
Adjustment
Sample Size
Too Large
The chromatogram or peak areas are
excessively large
. The condition may
be severe enough that all peaks are
off scale.
Repair Sample
Valve
PEAK
DISCRIMINATION
Discrimination is usually the result of a leak or
incorrectly adjusted sample splitter.
Discrimination is the non-linear
unequal dilution of hydrocarbons
in the column train
.
Excessive
Sample Splitting
Wrong Carrier
Gas
Attenuation Too
High
Verify the
correct
carrier gas is
being used
REDUCED
DETECTOR
SENSITIVITY
Detector Gain
Sample Size
Too Small
Sample Time
Too Small
The chromatograms or peaks have reduced
in size from that of a previous analysis
.
Repair the
sample valve
Check detector
gain jumper and
adjust if necessary
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