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Agilent Technologies 7890A Quick Reference

Gas chromatograph
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Agilent 7890A
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Summary of Contents for Agilent Technologies 7890A

  • Page 1 Agilent 7890A Chromatograph Quick Reference Agilent Technologies...
  • Page 2 Further, to the maximum extent without prior agreement and written permitted by applicable law, Agilent dis- consent from Agilent Technologies, Inc. as claims all warranties, either express or governed by United States and implied, with regard to this manual and international copyright laws.
  • Page 3 CAU TI O N CAU TI O N A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data.

  • Page 5: Table Of Contents

    Keypad Functionality When the GC Is Controlled by an Agilent Data System About GC Status Status board Alert tones Blinking setpoint About Logs Run log Maintenance log System event log 7890A GC Installation 7890A GC Installation in 10 Steps Quick Reference...
  • Page 6 Quick Reference...

  • Page 7: Introduction

    Online User Documentation This document provides an overview of the user infor- mation materials that are available for your system as well as a quick reference to the 7890A GC keypad and system installation steps. Important See your Agilent GC and GC/MS Hardware User Information &...

  • Page 8: Online User Documentation

    Agilent 7890A GC, 7820A GC, 6890N GC, 6850 Series GC, 7000 MS, 5975 Series MSD, 7693A ALS, and the 7683B ALS. Included are localized versions of the information you need most, such as: •...

  • Page 9: Keypad And Status Board

    Agilent 7890A GC Quick Reference Keypad and Status Board Keypad for the 7890A GC The Run Keys The Info Key The Status Key The GC Component Keys The General Data Entry Keys The Supporting Keys Method Storage and Automation Keys...

  • Page 10: Keypad For The 7890A Gc

    Keypad for the 7890A GC The next several pages provide an overview of the Agilent 7890A GC keypad functions. See the Agilent 7890A GC Advanced User Guide along with the complete suite of documentation included on the Agilent GC and GC/MS Hardware User Information &...

  • Page 11: The Run Keys

    Immediately terminates the run. If the GC is in the middle of a run, the data from that run may be lost. Refer to the Agilent 7890A GC Advanced User Guide for information on how to restart the GC after pressing [Stop].

  • Page 12: The Info Key

    The Info Key For context-sensitive help, press [Info]. For example, if you press [Info] on a setpoint entry, the help provided would be similar to: Enter a value between 0 and 350. [Info] Provides context-sensitive help for the currently shown parameter. For example, if Oven Temp is the active line in the display (has a <...

  • Page 13: The Status Key

    The Status Key [Status] Toggles between setpoint/actual values for most commonly reviewed parameters and displays “ready,” “not ready,” and “fault” information. When the Not Ready status light is blinking, a fault has occurred. Press [Status] to see which parameters are not ready and what fault has occurred.

  • Page 14: The Gc Component Keys

    The GC Component Keys These keys are used to set the temperature, pressure, flow, velocity, and other method operating parameters. To display the current settings, press any one of these keys. More than three lines of information may be available. Use the scroll keys to view additional lines, if necessary.
  • Page 15 [Oven] Sets oven temperatures, both isothermal and temperature programmed. [Front Inlet] Controls inlet operating parameters. [Back Inlet] [Col 1] Controls column pressure, flow, or velocity. [Col 2] Can set pressure or flow ramps. [Aux Col #] [Front Det] Controls detector operating parameters. [Back Det] [Aux Det #] [Analog Out 1]...

  • Page 16: The General Data Entry Keys

    The General Data Entry Keys Quick Reference...
  • Page 17 Removes methods, sequences, run table entries, and clock table entries. [Delete] also aborts the adjust offset process for nitrogen-phosphorus detectors (NPD) without interrupting other detec- tor parameters. See the Agilent 7890A GC Advanced User Guide for more details. Quick Reference...

  • Page 18: The Supporting Keys

    The Supporting Keys Quick Reference...
  • Page 19 [Post Run] Programs the GC to do something after a run, such as bakeout or backflush a column. See the Agilent 7890A GC Advanced User Guide for details. [Logs] Toggles among three logs: the Run Log, the Main- tenance Log, and the System Event Log. The infor- mation in these logs can be used to support Good Laboratory Practices (GLP) standards.

  • Page 20: Method Storage And Automation Keys

    Method Storage and Automation Keys These keys are for loading and storing methods and sequences locally on your GC. They cannot be used to access methods and sequences stored by your Agilent ChemStation. Quick Reference...
  • Page 21 [Seq Control] Starts, stops, pauses, or resumes a sequence, or views the status of a sequence. See the Agilent 7890A GC Advanced User Guide details. [Sample Tray] Displays whether the tray and/or bar code reader is enabled.

  • Page 22: The Service Mode Key

    The Service Mode Key [Service Mode] Accesses maintenance functions and settings, service counters, and diagnostics for the GC. Quick Reference...

  • Page 23: Keypad Functionality When The Gc Is Controlled By An Agilent Data System

    Keypad Functionality When the GC Is Controlled by an Agilent Data System When an Agilent data system controls the GC, the data system defines the setpoints and runs the samples. If configured to lock the keypad, the data system can prevent the changing of setpoints.

  • Page 24: About Gc Status

    About GC Status When the GC is ready to begin a run, the display screen shows STATUS Ready for Injection. Alternatively, when a component of the GC is not ready to begin a run, the Not Ready LED is lit on the status board. Press [Status] to see a message explaining why the GC is not ready.
  • Page 25 Description Not Ready Lights when the GC is not yet ready to pro- cess a sample and blinks when a fault occurs. Press [Status] to see which parameters are not ready or what faults have occurred. Lights when the instrument is executing a chromatographic run.

  • Page 26: Alert Tones

    Alert tones A series of warning beeps sounds before a shutdown occurs. After a short time the component with the problem shuts down, the GC emits one beep, and a brief, numbered message is displayed. For example, a series of beeps sounds if the front inlet gas flow cannot reach setpoint.

  • Page 27: About Logs

    About Logs Three logs are accessible from the keypad: the run log, the maintenance log, and the system event log. To access the logs, press [Logs] and toggle to the desired log. The display will indicate the number of entries the log contains.
  • Page 28 Quick Reference...

  • Page 29: 7890A Gc Installation

    Agilent 7890A GC Quick Reference 7890A GC Installation 7890A GC Installation in 10 Steps The following is a quick reference guide for installing and checking out your new GC. For detailed instructions on these steps, refer to the documentation included on the Agilent GC and GC/MS Hardware User Information &...

  • Page 30: 7890A Gc Installation In 10 Steps

    7890A GC Installation in 10 Steps Step 1 Place the GC on the bench and remove the detector caps under the detector cover. Step 2 1-2 mm On the back panel, remove the caps and connect the gases. Quick Reference...
  • Page 31 Step 3 Recommended Maximum Helium 400 kPa (60 psi) 690 kPa (100 psi) Hydrogen 400 kPa (60 psi) 690 kPa (100 psi) 550 kPa (80 psi) 690 kPa (100 psi) Nitrogen 400 kPa (60 psi) 690 kPa (100 psi) Set the gas source pressures and check for leaks. Step 4 Install the checkout column.
  • Page 32 Step 5 Install the sampler and tray and connect the cables to the back panel. Step 6 RS-232 Connect the power cord and the remaining cables. Quick Reference...
  • Page 33 Step 7 STATUS - Ready Oven On ACTUAL SETPOINT Ready Post Remote Clock Table Service Saver Turn on the GC. Load the checkout method for the inlet and detector you are using. Wait for “Ready” to appear on the display screen. Step 8 1.0 μL For a manual injection: Prepare the checkout sample.
  • Page 34 Step 9 For automatic sampler injections: Prepare the checkout sample vial. Load the vial into the sampler, then press start. Step 10 FID1 A, (C:\FID.D) Compare your results with the checkout chromatogram for your detector. Quick Reference...

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