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GAS CHROMATOGRAPHY SP 3400

SP-3400 series Gas Chromatographs use the newest technique introduced from VARIAN Associates in the United States. With the international standard production, its technical feature and index are in the high level of the world. The gas valves and the key component of detectors are imports from America. Widely used for petrol-chemistry, environment protection, epidemic prevention, pharmacology, scientific research, etc.

Details:

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 autosampler 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. It' s especially suitable for unattended operation.
More choices of injectors:
1) On- Column Injector for Packed Column; 2) Flash Vaporization Injector for Packed Column
3) Automatic or manual gas inject valve; 4) Headspace sampler; 5) Thermal desorption system
6) Split/ Splitless Capillary Injector; Three Injectors or two Split/ Splitless Capillary Injectors can be fixed on GC.
More choices of detectors:
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 420º C;
Dual opening-door at the back of column oven;
Cooling time: 250º C to 50º C in 5 min;
Programmable oven with 4-ramp temperature control;
Temperature programming rate: 0.1~ 50º C/ min
Injector system:
Operating temperature range: Ambient temperature to 420º C
Thermal conductivity detector -TCD:
Maximum temperature: 420º C
Sensitivity: e 12000mv· ML/ mg ( for butane)
Linear range: 105
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: 420º C
Minimum detectivity: d 1.3× 10-12g/ s ( n-C16)
Linear range: 107
Flameout hint: Monitoring the status of GC continuously after being turned on.
Electron capture detector-ECD:
Maximum temperature: 420º C
Minimum detectivity: d 0.1pg/ mL ( ³ -666)
Linear range: 104
Emission source: 11mC63Ni
Flame photometric detector-FPD:
Maximum temperature: 420º C
Minimum detectivity:
[ P] d 1× 10-12g/ s ( tributyl phosphate)
[ S] d 1× 10-10g/ s ( p-methylsulfurphosoharous)
Linear range: [ P] : 105 [ S] : 103
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 12¼ A, high voltage will be cut off automatically.
Nitrogen-phosphorus detector-TSD:
Maximum temperature: 420º C
Minimum detectivity:
[ N] d 1× 10-13G/ s ( azobenzene)
[ P] d 5× 10-14g/ s ( malathion)
Linear range: [ N] : 105 [ P] : 104