Vici D-4-I-TQ-R Manual de usuario

Valco Instruments Co. Inc.Pulsed Discharge Detector Models D-4-I-TQ-R and D-4-I-TQI-R Instruction Manual Rev 1/15 Valco 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

7InstallationGAS CHROMATOGRAPHTEE(ZT1)HELIUMPURIFIERDISCHARGE GAS(99.999% He)TGA-R-30F60PRESTRICTOR(30 mL/min minimum)VENTCOLUMNINLETDISCHARGE GASINLE

8Installation7. Open the cylinder valve to pressurize the regulator once again. Close thevalve and observe the needle of the high pressure gauge for

9Detector Electrical ConnectionsCAUTION: Do not use a wrench to tighten the SMCconnectors on the bias and electrometer cables.Connections should be fi

10Initial Power-UpCAUTION: Always make sure that discharge gas isflowing before heating and powering up the detector.1. Before installing the column,

11InstallationCapillary Column ConnectionIf the capillary column adapter is installed in the column inlet:1. Make a mark on the column 14.5 cm from th

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

13Mode Selection and SetupHelium Ionization ModeIf the instructions at the top of page 11 were properly executed, the columnshould already be properly

14Mode Selection and SetupAr-PDPIDChanging the discharge gas from helium to a mixture of 2% argon inhelium changes the photon energy level from the 17

15TroubleshootingHigh Background CurrentLow SensitivityPurple/bluePinkDisconnect the columnand cap the column inletBaseline current is still high(>

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16High Noise LevelIf the noise lievel is high:1. See if it improves with the GC fan turned off.2. Check the column insertion position (14.5 cm for cap

17WarrantyThis Limited Warranty gives the Buyer specific legal rights, and a Buyermay also have other rights that vary from state to state. For a peri

18Detector Performance LogIn addition to the occasions indicated in the Comments area of the table below (see Initial Power-Up,page 10), the standing

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

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1IntroductionDescription and Operating PrincipleThe PD-D-4-I-TQI-R and PD-D-4-I-TQ-R are non-radioactive pulsed dischargeionization detectors (PDIDs)

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

3Components of the Detector SystemComponents of the detector systems are listed in the tables below. Check the package contents to verify that everyt

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