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Agilent Technologies G4319A Installation Manual

Tcd-to-fid series connection on a 6820 gc, accessory
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TCD-to-FID Series Connection on a
6820 GC, Accessory G4319A
Installation Guide
The TCD-to-FID Series Connector connects output flow from a
Thermal Conductivity Detector (TCD) to the column inlet of a
Flame Ionization Detector (FID) to perform a second analysis of
the same injected sample. Before following this procedure, refer
to safety information at the end of this document.
• Both a TCD and a FID are required to use this accessory. If
an ECD is present, or in a dual FID or TCD situation, the
unneeded detector must be removed and replaced. To
achieve a standard factory configuration, the TCD must be
located in the front detector position.
• If you are installing a new FID at this time, refer to its
installation document.
• If you are installing a new TCD at this time, it is important to
read this document before doing so. Instructions here modify
some TCD installation steps described in its installation
document.
Complete TCD hardware installation through all wiring
connections. Then, when ready to insert the TCD block
assembly into the oven, see
Reinstalling the TCD Block"
• Do not restore power and gases to the GC, or test its
detectors, until after the TCD-to-FID series connector is
installed.
Agilent Technologies
"Adjusting Vent Tubing and
on page 6.

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Summary of Contents for Agilent Technologies G4319A

  • Page 1 TCD-to-FID Series Connection on a 6820 GC, Accessory G4319A Installation Guide The TCD-to-FID Series Connector connects output flow from a Thermal Conductivity Detector (TCD) to the column inlet of a Flame Ionization Detector (FID) to perform a second analysis of the same injected sample.

  • Page 2: Parts List

    Parts list • TCD-to-FID Series Connector assembly • Swage nuts and ferrules Tools • Electrostatic protection such as a grounded wrist strap • T-20 Torx screwdriver • 7/16-inch wrench Steps 1 Preparing the GC 2 Raising the TCD Block 3 Adjusting Vent Tubing and Reinstalling the TCD Block 4 Installing the TCD-to-FID Series Connector Installation Guide: TCD-to-FID Series Connection...
  • Page 3 Preparing the GC 1 Turn off the detectors. 2 Set the oven to 25 °C and turn off all other heated zones. 3 Turn off all carrier and detector gases at their sources. Carrier gas flow must be maintained until the column has cooled to avoid N O T E column damage.
  • Page 4 2 In the same manner, remove two screws along the lower edge of the right side (electronics) panel. Slide the panel slightly to the rear and lift it off. 3 Remove the back panel by removing two screws at its bottom edge, loosening two screws at its top edge, and the lifting off the two top screws.
  • Page 5 3 Cap the vent tube at the top of the detector. Thermal cover Insulation Delta PRT sensor Vent tube Vent tube support Heater and PRT sensor Retaining screw Detector base Installation Guide: TCD-to-FID Series Connection...
  • Page 6 GC insulation is made of refractory ceramic fibers. Ventilate your work C A U T I O N area. Wear long sleeves, gloves, safety glasses, and a disposable dust/mist respirator. Dispose of unneeded insulation in a sealed plastic bag. 1 Carefully remove the preformed thermal insulation from around the detector block to expose two screws securing the block to the oven top.
  • Page 7 4 Reinstall heater and sensor cartridges into the block. It does not matter which sensor is placed in either of the two holes provided. When installing insulation, use care to not plug the vent tube. If flow is C A U T I O N reduced or blocked when the TCD filament is switched on, its life may be shortened dramatically.
  • Page 8 Installing the TCD-to-FID Series Connector 1 Working inside the oven, and following proper swaging procedures described in the 6820 Getting Started manual, use the 1/8-inch stainless tubing nut, back ferrule, and front ferrule to connect the TCD-to-FID jumper tube to the TCD vent tube.
  • Page 9 4 Restore gas supplies and, following leak test procedures described in the Maintenance and Troubleshooting manual, check for leaks, particularly at all new connections. Installation Guide: TCD-to-FID Series Connection...

  • Page 10: Agilent Technologies

    Agilent Technologies Notices © Agilent Technologies, Inc. 2003 Safety Notices No part of this manual may be reproduced in any form or by any means (including electronic C A U T I O N storage and retrieval or translation into a...