Buchi PrepChrom C-700 Manuel d'utilisateur télécharger pdf (Page 23)

BÜCHILabortechnikAG Descriptionoffunction|4

PrepChromC700 23/110

4.3 Function

Fig.6:Principleofthechromatographysystem

1 6wayelectricalvalve 2 Column

3 Wastevalve 4 Wastebottle

5 Fractioncollector 6 Glasstubes

7 UVDetector 8 SolventbottlesA–D

9 Airpurge 10 Pump

4.3.1 UVDetector

TheUV/Visdiodearraydetectormeasurestheamountoflightabsorbedbya

liquidpassingthroughthecellatagivenwavelength.Itisequippedwithadeu

teriumdischargelamp.The4wavelengthsavailableandtheSCANfunctionare

selectedwithinalargerange,from200to600nm.

Scanmode

Selectionofthesignalsacquiredfromthedetector(s).Thesesignalscanbe

thenplottedandusedasreferenceforcollectionduringthemethodexecution.

Thescanmodeisusedtoplotthemeanvaluecalculatedasfromthevaluesob

tainedatseveralwavelengthsontherange.Theproposalsdependonthede

vicesconnectedtothesystemthataregiveninthesystemconfiguration(byde

fault:E600:CH1,E600:CH2&E600:SCAN,ELSD).

4.3.2 Valvemodule

Thevalvemodulegivesthepossibilitytoinjectasample(liquidorsolidviadry

load)automaticallyvia6wayelectricalvalve.

Ontherightsideofthevalvemodulethefollowingoptionalaccessoriescanbe

installed:

• Switchingvalve

• Backflushvalve

• 4.5 Optional accessories [} page34]

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Buchi PrepChrom C-700 Manuel d'utilisateur Page 23