Advertisement
Quick Links
Advertisement
Related Manuals for Agilent Technologies G2623A
Summary of Contents for Agilent Technologies G2623A
- Page 1 Installation Guide Thermal Conductivity Detector on a 6850 GC Accessory G2623A...
- Page 2 © Agilent Technologies 2000 Safety Information Safety Symbols All Rights Reserved. Reproduction, The Agilent Technologies Thermal Warnings in the manual or on the adaptation, or translation without Conductivity Detector meets the following instrument must be observed during all permission is prohibited, except as allowed...
- Page 3 Wrist strap, disposable, large Installation sheet (this document) The TCD assembly is a factory-assembled, tested, and calibrated unit. Disassembly of the unit is not required for installation. Copyright© 2000 Agilent Technologies Printed in USA Dec 2000 Agilent Part No. G2623-90107...
-
Page 4: Tools Required
Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Heater/sensor cable PRT and TCD assembly filament wires Switching valve extension cable and grommet Flow manifold cable Screws Bottom insulation Plastic grommet Signal Seal insulation board Tubing plugs Tools Required Torx™... -
Page 5: Prepare For Installation
Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Prepare for Installation WARNING Before proceeding, turn off the oven and any heated zones and let them cool down. Turn off all detector gases at their supplies, then turn off the main power switch and unplug the power cord. - Page 6 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Remove the Lid Top Cover Lid top cover, without Remove vent lines, if present valve box accessory Remove T-20 Torx™ screws (8 places) Remove detector cover, if desired Remove the lid top cover. Disconnect the Heater/Sensor Cable Trace the detector heater/sensor cable to the wiring harness near the injection port cooling fan.
- Page 7 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Cam follower Stop plate Screw Counterbalance cam Raise the lid until it is stopped by the safety cable. Raise the stop plate and tighten the screw to lock the lid in the upright service position.
- Page 8 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Remove the Detector Electronics Cover Loosen the two bottom screws on the detector electronics cover. Remove screw Detector electronics cover Loosen screws Remove the top screw on the cover. Lift and remove the detector electronics cover.
- Page 9 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Loosen the signal board clamp. Ribbon cable Signal board (FID shown) Signal board clamp A/D converter board Unplug the signal board from the A/D converter board. Disconnect the wiring from the signal board. FID –...
- Page 10 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Ribbon cable connector Ignitor cable connector TCD – Unplug the two-wire switching valve cable at the connector. To release the PRT and filament wires, press on the orange tabs. Pass the disconnected cables/wires through the hole to the top side of the lid.
- Page 11 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Remove the Existing Detector and Flow Manifold On the top of the lid, loosen the connector cover plate and remove the plates. Cover plate screws Gas manifold (FID shown) Manifold mounting screws Gas fittings Disconnect the gas fittings.
- Page 12 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph FID – Remove four mounting screws. FID mounting screws (one concealed) TCD – Remove two mounting screws. Mounting screws Lift the detector and flow manifold out of the lid as a unit. WARNING The fibrous insulation material used in the Agilent 6850 can cause irritation to the skin, eyes, and mucous membranes.
- Page 13 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Align the thermal conductivity detector as shown and lower it into place. Position the flow manifold. Check that no wiring or tubing is trapped under either assembly. Heater/sensor cable connection Switching valve Screws cable connection...
- Page 14 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph WARNING The gas line labelled H is plumbed to the hydrogen supply. Be sure to plug this line to prevent accidental release of hydrogen gas into the instrument. The A and H gas lines are not used with the TC detector. If they are not already plugged, plug them with the brass plugs and push them down into the space under the manifold fittings.
- Page 15 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph Switching valve cable connector PRT wires Filament wires Caution Double check the PRT and filament connections before proceeding. An incorrect connection can damage the detector when power is restored. Plug the switching valve extension cable into the signal board. Install the detector electronics cover and tighten all three screws.
- Page 16 Installing a Thermal Conductivity Detector on a 6850 Gas Chromatograph...
- Page 18 Printed on recycled paper. This product is recyclable. Agilent Technologies, Inc. Printed in USA JAN 2001 G2623-90107...