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    Room 1015,Beijing Research Institute of Meha-
    nical & Electrical Technology,No.18 Xueqing Road,
    Haidian District,
    Beijing,P.R. China 100083

    SP-3420A Gas Chromatography



    Ÿ Self-diagnostic function:

    1) Core tests; 2) Automatic tests; 3) Extended tests; 4) Basic tests;

    Monitor the status of GC continuously.  Once finding faults, itll display the information and show the wrong zone and the settling method.

    Ÿ Self-protective function:

    1) Overrun temperature protection2) Short circuit hint3) TCD filament protection4) FID flameout hint5) PFD exposed-light protection6) Keyboard locking with password; etc., ensuring normal running.

    Ÿ 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. Its especially suitable for unattended operation.

    Ÿ 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.

    Ÿ 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.

    Ÿ Reactor: 1) Internal; 2) external

    Ÿ Time programming of detectors:

    Each of detectors has 5-ramp programmable time control.  Output-signal, attenuation range, and polarity can be set automatically.

    Ÿ 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.

    Ÿ Many kind of special-purpose GC can be provided according to users request.



    Ÿ Column oven:

    Operating temperature range: ambient temperature to 400;

    Dual opening-door at the back of column oven;

    Cooling time: 250to 50in 5 min;

    Programmable oven with 4-ramp temperature control;

    Temperature programming rate: 0.1~50/min

    Ÿ Injector system:

    Operating temperature range: ambient temperature to 400

    Ÿ Thermal conductivity detector -TCD:

    Maximum temperature: 400

    Sensitivity: 10000mv • mL/mg (for butane)

    Linear range: 105

    Current range: 50 to 400mA

    Ÿ 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.

    Ÿ Flame ionization detector-FID:

    Maximum temperature: 400

    Minimum detectivity: 510-12g/s (n-C16)

    Linear range: 107

    Flameout hint: monitoring the status of GC continuously after being turned on.

    Ÿ Electron capture detector-ECD:

    Maximum temperature: 400

    Minimum detectivity: 0.1pg/mL (-666)

    Linear range: 104

    Emission source: 11mC63Ni

    Ÿ Flame photometric detector-FPD:

    Maximum temperature: 400

    Minimum detectivity:

    [P] 210-12g/s (tributyl phosphate)

    [S] 210-10g/s (p-methylsulfurphosoharous)

    Linear range: [P]:105 [S]: 103

    Two air-hydrogen flamesFor 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 than12A, high voltage will be cut off automatically.

    Ÿ Nitrogen-phosphorus detector-TSD:

    Maximum temperature: 400

    Minimum detectivity:

    [N] 210-13g/s (azobenzene)

    [P] 110-13g/s (malathion)

    Linear range: [N]:105 [P]: 104