147
CHROMATOGRAPH
C
GC3420A, Gas Chromatograph
Features:
●
Self-diagnostic function:
1) Core tests; 2) Automatic tests; 3) Extended tests;
4) Basic tests; Monitor the status of GC continuously.
Once finding faults, it’ll display the information and show
the wrong zone and the settling method.
●
Self-protective function:
1) Overrun temperature protection; 2) Short circuit hint;
3) TCD filament protection; 4) FID flameout hint; 5) PFD
exposed-light protection; 6) Keyboard locking with
password; etc., ensuring normal running.
●
Simple operation, powerful automation:
1) All parameters can be entered through keyboard with
prompt function; 2) 4 sets of complete chromatography
analysis methods can be stored and recalled
automatically; 3) An auto sampler can be connected; 4)
Parameters can be modified instantly while the GC is
running: 5) Chromatography analysis method can be
activated for 99 times repeatedly at the same time Its
especially suitable for unattended operation.
●
More choices of injectors:
1) TCD; 2) FID; 3) ECD; 4) FPD 5) TSD
Maximum of two TCDs or three different kinds of
detectors can be installed.
●
Reactor:
1) Internal; 2) external • Time programming of detectors:
Each of detectors has 5-ramp programmable time
control. Output-signal, attenuation range, and polarity
can be set automatically.
●
Time programming of external events:
Providing 4 external events with 20-ramp programmable time control.
The optional GC relays may be used to automate valves, operate split/ splitless capillary injectors, drive auxiliary
devices, or switch signals between detector A and detector B in a run.
●
Many kind of special-purpose GC can be provided according to user’s request.
Specifications:
●
Column oven:
Operating temperature range: ambient
temperature to 400°C;
Dual opening-door at the back of column oven;
Cooling time: 250°C to 50°C in 5 min:
Programmable oven with 4-ramp temperature
control;
Temperature programming rate: 0.1~50°C/min
●
Injector system:
Operating temperature range: ambient
temperature to 400°C
●
Thermal conductivity detector -TCD:
Maximum temperature: 400°C
Sensitivity:
≥
10000mv • mL/mg (for butane)
Linear range: 10
5
Current range: 50 to 400mA
●
Filament protection:
If He or H2 carrier gas flow in the detector cell is
cut off for 4 minutes, filament power will be shut off
automatically.
●
Flame ionization detector-FID:
Maximum temperature: 400°C
Minimum detectivity:
≤
5x10
-12
g/s (n-C
16
)
Linear range: 10
7
Flameout hint: monitoring the status of GC
continuously after being turned on.
●
Electron capture detector-ECD:
Maximum temperature: 400°C
Minimum detectivity:
≤
0.1pg/mL (y-666)
Linear range: 10
4
Emission source: 11 mC
63
Ni
●
Flame photometric detector-FPD:
Maximum temperature 400°C
Minimum detectivity:
[P]
≤
2x10
-12
g/s (tributyl phosphate)
[S]
≤
2x10
-10
g/s (p-methylsulfurphosoharous)
Linear range: [P]:105 [S]: 10
3
Two air-hydrogen flames: For large volume injection
or trace sample injection analyses;
Single air-hydrogen flame: sulfur sensitivity can be
increased;
Direct output: for phosphorus or sulfur analyses;
Square-root output: for sulfur analyses:
Exposed-light protection:
When exposed-light current is more than 12pA, high
voltage will be cut off automatically.
●
Nitrogen-phosphorus detector-TSD:
Maximum temperature: 400°C
Minimum detectivity:
[N]
≤
2x10
-13
g/s (azobenzene)
[P]
≤
1x10
-13
g/s (malathion)
Linear range: [N]:10
5
[P]: 10
4
.
Gas
GC3420A
