7694 headspace sampler operating manual

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  • Agilent 7694 Headspace SamplerOperating Manual

  • Agilent Technologies, Inc.2850 Centerville RoadWilmington, DE 19808-1610USA

    Agilent Technologies 2000

    All Rights Reserved. Reproduction, adaptation, or translation without permission is prohibited, except as allowed under the copyright laws.

    Part number G1290-90317

    First Edition, 3/2000

    Replaces Part No. G1290-90310, Operating and Service Manual, and part No. G1883-90310, Operating and Service Manual.

    HP is a registered trademark of Hewlett-Packard Co.

    Silcosteel is a registered trademark of Restek Corp.

    Swagelok is a registered trademark of Swagelok company.

    Printed in USA

    Safety Information

    The Agilent Technologies 7694 Headspace Sampler meets the following IEC (International Electrotechnical Commission) classifications: Safety Class 1, Transient Overvoltage Category II, and Pollution Degree 2.

    This unit has been designed and tested in accordance with recognized safety standards and designed for use indoors. If the instrument is used in a manner not specified by the manufacturer, the protection provided by the instrument may be impaired. Whenever the safety protection of the Agilent 7694 has been compromised, disconnect the unit from all power sources and secure the unit against unintended operation.

    Refer servicing to qualified service personnel. Substituting parts or performing any unauthorized modification to the instrument may result in a safety hazard. Disconnect the AC power cord before removing covers. The customer should not attempt to replace the battery or fuses in this instrument. The battery contained in this instrument is recyclable.

    Safety Symbols

    Warnings in the manual or on the instrument must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions violates safety standards of design and the intended use

    of the instrument. Agilent Technologies assumes no liability for the customers failure to comply with these requirements.

    WARNINGA warning calls attention to a condition or possible situation that could cause injury to the user.

    CAUTIONA caution calls attention to a condition or possible situation that could damage or destroy the product or the users work.

    Indicates a hot surface

    Indicates earth (ground) terminal

    Sound Emission Certification for Federal Republic of Germany

    Sound pressure Lp < 68 dB(A)

    During normal operationAt the operator positionAccording to ISO 7779 (Type Test)

    Schallemission

    Schalldruckpegel LP < 68 dB(A)Am ArbeitsplatzNormaler BetriebNach DIN 45635 T. 19 (Typprfung)

  • ContentsChapter 1 About This ManualManual Overview ....................................................................................................... 2Intended User ............................................................................................................ 3Conventions ............................................................................................................... 3

    Chapter 2 Introduction to Headspace and to the 7694 Headspace Sampler

    Overview of Headspace Analysis ............................................................................ 6The 7694 Headspace Sampler .................................................................................. 7

    Oven (G1289/G1290) ......................................................................................... 7Heated Zones (G1883) ...................................................................................... 8Vial Tray (G1289/G1290) ................................................................................... 9Vial Transport Arm (G1289/G1290) ................................................................. 9Sampling System ............................................................................................. 10Transfer Line .................................................................................................... 10Keypad and Display ......................................................................................... 10Pneumatics ....................................................................................................... 11

    Principles of Operation ........................................................................................... 13General Operation ........................................................................................... 13Power on Diagnostics ..................................................................................... 14Standby Condition ........................................................................................... 14Vial Pressurization ........................................................................................... 15Filling the Sample Loop .................................................................................. 16Loop Equilibration ........................................................................................... 17Injecting the Sample ........................................................................................ 17End of Cycle and Vial Recovery .................................................................... 18

    Modes of Operation ................................................................................................. 19Standard Headspace Extraction .................................................................... 19Multiple Headspace Extraction with Multiple Vial PunctureG1289/G1290 only ............................................................................................ 21Multiple Vial Puncture with Constant Heating TimeG1289/G1290 only . 22Multiple Headspace Extraction with Single Vial Puncture ........................ 23Multiple Headspace Extraction for Analyte ConcentrationG1289/G1290 only ............................................................................................ 23i

  • ContentsChapter 3 The KeypadAccessing Functions ................................................................................................26Editing Setpoints ......................................................................................................26The G1883 Keypad ...................................................................................................26The G1289/G1290 Keypad .......................................................................................28Keys and Their Functions .......................................................................................30

    Start (G1883 only) ............................................................................................30Stop/Reset (G1883 only) .................................................................................30Start/Stop (G1289/G1290 only) .......................................................................30Zone Temps .....................................................................................................31Event Times .....................................................................................................32Vial Parameters ...............................................................................................34Load Method ....................................................................................................35Store Method ...................................................................................................35Chain Methods ................................................................................................36Link Methods ..................................................................................................36Carousel Advance (G1883 only) .....................................................................36Pressure (G1883/G1290 only) .........................................................................36Tray Advance (G1289/G1290 only) ................................................................36Enter ................................................................................................................37Clear .................................................................................................................37Numeric Keypad ...............................................................................................37Adv Fctn { } ......................................................................................................37

    Chapter 4 Using the Adv Fctn KeyUsing an Advanced Function .................................................................................40List of Advanced Functions by Model ...................................................................41Advanced Function Descriptions ..........................................................................44

    Chapter 5 Preparing a SampleSample Preparation .................................................................................................56Loading the Sample Tray and/or Carousel ...........................................................58ii

  • ContentsChapter 6 Entering a MethodEntering a Method ................................................................................................... 60

    Entering Zone Temps ...................................................................................... 60Setting Event Times ........................................................................................ 61Setting Vial Parameters .................................................................................. 63

    Storing and Loading Methods ................................................................................ 64Storing a Method ............................................................................................. 64Loading a Method

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