Vici D-4-I-SH17-R Manual de usuario Pagina 1

Valco Instruments Co. Inc. D4_shim_17.P65 Rev. 5/12 Pulsed Discharge Detector Model D-4-I-SH17-R Instruction ManualValco Instruments Co. Inc.800 · 3

6InstallationGeneral Precautions • Do not use plastic/polymer or copper tubes for gas handling andinterconnectons. Use only stainless steel tubing w

7Figure 4: Mounting the detector on a GC-2010 or GC-2014TOPULSERMODULEFROM UPPERDETECTORELECTODEFROM LOWERDETECTORELECTODE

8InstallationGAS CHROMATOGRAPHTEE(ZT1)HELIUMPURIFIERDISCHARGE GAS(99.999% He)TGA-R-30F60PRESTRICTOR(30 mL/min minimum)VENTCOLUMNINLETDISCHARGE GASINLE

9InstallationEZR217. Open the cylinder valve to pressurize the regulator once again. Close thevalve and observe the needle of the high pressure gauge

10InstallationCapillary Column ConnectionIf the capillary column adapter is installed in the column inlet:1. Make a mark on the column 11.4 cm from th

11Installation3. Set aside the 1/8" wrench and completely remove the adapter from thecolumn inlet.4. Screw the packed column adapter into the col

12Pulser Module Installation1. GC-17: The pulser module can usually be mounted on the bottom plate ofthe GC, using existing holes. (Figure 6) If th

13Figure 7: Possible location for the pulser module on the GC-2014InstallationPOSSIBLELOCATION FORPULSER MODULEON GC-2014Figure 8: Possible location

14InstallationDetector Electrical ConnectionsCAUTION: Do not use a wrench to tighten the SMCconnectors on the bias and electrometer cables.Connections

15InstallationInitial Power-UpCAUTION: Always make sure that discharge gas isflowing before heating and powering up the detector.1. Before installing

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16Mode Selection and SetupHelium Ionization ModeIf the instructions of Step 1 at the top of page 10 were properly executed,the column should already b

17Ar-PDPIDChanging the discharge gas from helium to a mixture of 2% argon inhelium changes the photon energy level from the 17 - 13.5 eV range to the1

18TroubleshootingHigh Background CurrentLow SensitivityPurple/bluePinkDisconnect the columnand cap the column inletBaseline current is still high(>

19High Noise LevelIf the noise lievel is high:1. See if it improves with the GC fan turned off.2. Check the column insertion position (11.4 cm for cap

20WarrantyThis Limited Warranty gives the Buyer specific legal rights, and a Buyermay also have other rights that vary from state to state. For a peri

21DateDetector Model: Serial Number: Date of purchase:Operator Columntemp(°C)Detectortemp(°C)Standingcurrent(mV)NoiselevelSampleCommentsInitial po

Table of ContentsIntroduction Description and Operating Principles ...1 Safety Notes and

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1IntroductionDescription and Operating PrincipleThe PD-D-4-I-SH17-R is a non-radioactive pulsed discharge ionization detector(PDID) which is optimized

2Helium Ionization (PDHID)The PDHID is essentially non-destructive (0.01 - 0.1% ionization) and highlysensitive. The response to organic compounds is

3Components of the Detector SystemDetector system components are listed in Table 1. Check the contents of the packages toverify that everything is pr

4IntroductionSystem RequirementsComponents Not Included with the Detector System • Helium (99.999% purity) and other support gases • Ultra high puri

5IntroductionedoMrotceteDDIHDPDIPDP-rADIPDP-rKDIPDP-eXsagegrahcsiDmuileHeHnirA%2eHnirK%5.1eHnieX%8.0sagreirraCmuileH*****Gas Specifications** Any gas