12 / 44
The selectivity mode simplifies the chromatography
and can be configured for specific application.
By controlling the temperature of the doping agent injection device,
better stability of the measurement is achieved. The temperature is
controlled by the PlasmaDetek controller and can be adjusted for
the specific application. The use of different doping agents is
application dependant is part of the selectivity mode.
SELECTIVE AND NON-SELECTIVE
CONFIGURATION
DOPING AGENT INJECTOR TEMPERATURE
CONTROLLED
2
The PlasmaDetek design avoids the creation of phantom
peaks that occurs in conventional ionization detector. Its
unique design made of a monolitic quartz makes the detector
dead volume free. It is not affected by pressure or flow swings.
PED DESIGN
WITH NO DEAD VOLUME
Conventional ionization detector
100ppm O
2
& 10ppm N
2
in He
O
2
O
2
O
2
N
2
N
2
N
2
12ppm N
2
in balance Oxygen
Plasmadetek
100ppm O
2
& 10ppm N
2
in He
12ppm N
2
in balance Oxygen
CARRIER
GAS
LIGHT EMISSION
GENERATOR
HIGH INTENSITY
HIGH FREQUENCY