DSH112A Gas Chromatograph

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2. Brand-newdesignedmicrocomputertemperaturecontrolsystemofworldadvancedcontroltechnology.Highaccuracyoftemperaturecontrol(optimum:0.05C),highreliabilityandanti-interference.
3. Controlandoperatingparameters(includingfordetector)setupbythekeyboard.Self-diagnosissystem,power-failprotection,filestorageandcall,limitedtemperaturesetting.Accuratedisplayofsettingandactualvalueoftemperaturecontrolofeachpath,bridgecurrentofTCD,sensitivityofFID,retentionandanalysistime.
4. Fourpathsofindependentcontrolsections:columnoven,sampleinjector,detectorandthermalconductivepond.
5. 5-rampprogrammedtemperaturerisingcontrol.Auto-dropoftemperatureofcolumnoven(auto-openingthedoorbehindtheoven)toafastcooling.
6. FIDandTCDdetectorscanbeinstalledatthesametimewithhighsensitivity.Shorttimetobestabilizedandeasytocleanandinstallnozzle.
7. Packedcolumnandcapillarycolumn(0.53largediameterorsmalldiameter)canbeinstalledeasilyincludingacompletesetofsplitsamplingconnectorandtailingconnectortobeinstalledfreeofcharge.Optional0.53mmlargediametercapillarydirectsamplerisavailableforchoice.
8. Analysiscanbeconductedinpackedorcapillarycolumnwith,multiplesamplingmethods.
9. Packedcolumn:on-columnsampling,instantaneousvaporizedsamplingandgassampling.
10. Capillarycolumn:splitsamplingand0.53mmlargediametercapillarydirectsampling.
11. Constructionofdualgaspath,dualsampleinjectoranddualpackedcolumnsystemcaneffectivelyavoidbaselineundulationanddriftinrealtimeandfacilitateprogrammedtemperaturerisinganalysis.Accurateandscalestypegaspathcontrolvalveswillprovideahighrepeatabilityandstability.
12. Advancedfunctions:autoON/OFFtemperaturecontrolsystem,permanentdatastorage,filestorageandcallandover-temperatureprotection.
13. Largevolumecolumn(300x280x270)canholdcapillarycolumnanddualpackedcolumn.Built-inheatingfilamentstructureisinfavorofquartzcapillaryanalysis.
14. Acompletesetofaccessoriesincludingpurifier,pressure-reducingvalve,gaspathtube,wrenchandtools,injectionneedleandconnectorsofallkindsareprovidedfreeofchargeandarereadytoconnectwithsupply-airsystempreparedbyusers.

2. Temperaturecontrol:

Temperaturerange:roomtemperatureon7℃~399℃(incrementsby1℃)

TemperatureObject:oven,detector,thermalconductivity,injector.

Programmingphase:fivebands

Programmingrate:0.1℃~40℃/min(incrementsby0.1℃)

Holdingtime:0~655min(incrementsby1min)

2. Flameionizationdetector(FID):

DetectionLimit:DFID≤5×10-11g/s(sample:C16)

Bestresults:DFID≤1×10-11g/s

Baselinenoise:≤5×10-14A

Baselinedrift:≤6×10-13A/h

Linearrange:≥106

3. Thermalconductivitydetector(TCD)

Sensitivity:≥2000mV.ml/mg

Baselinenoise:≤20μV

Baselinedrift:≤30μV

Linearrange:≥104

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