Agilent Technologies G1888 Bedienungsanleitung

Agilent Technologies

Agilent G1888 Network

Headspace Sampler

User Information

medium_standard.book Page 1 Tuesday, February 17, 2004 10:14 AM

2User Information

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

G1888-90012

Edition

First edition, March 2004

Printed in USA

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610 USA

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

either express or implied, with regard

to this manual and any information

contained herein, including but not

limited to the implied warranties of

merchantability and fitness for a par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connec-

tion with the furnishing, use, or per-

formance of this document or of any

information contained herein. Should

Agilent and the user have a separate

written agreement with warranty

terms covering the material in this

document that conflict with these

terms, the warranty terms in the

separate agreement shall control.

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing 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. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Acknowledgements

Swagelok® is a registered trademark of the

Swagelok Company.

Microsoft® and Windows® are registered

trademarks of the Microsoft Corporation.

medium_standard.book Page 2 Tuesday, February 17, 2004 10:14 AM

User Information 3

Manual Overview

This manual contains 10 chapters and an index.

1 Introduction

Provides the purpose of this manual and an overview of its

contents. It identifies the intended reader and lists the

conventions used throughout the manual.

2 Introduction to Headspace and to the G1888 Network Headspace

Sampler

Provides an overview of headspace theory and practice. It

describes the instrument and its modes of operation.

3TheKeypad

Describes the keypad, the functions each key controls, and how

to enter new setpoints for each function.

4 Advanced Functions

Describes the advanced functions controlled by the Adv Fctn

menu, how to edit setpoints for these functions, and the

displays that accompany each function.

5 Preparing a Sample

Describes the preparation of a sample for analysis, including

filling and sealing the sample vial, loading the sample tray, and

running a checkout sample.

6 Entering a Method

Describes the steps to follow in entering a method, including

changing setpoints, storing and retrieving a method, and

chaining methods.

7 Developing Methods

Describes the parameter changes that can affect sensitivity,

precision, and accuracy.

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4User Information

8 Running a Sample

Summarizes operation of the Headspace Sampler to run a

sample.

9 Maintaining the Instrument

Describes maintenance procedures including changing the

sample loop, transfer line, needle, valves, and EPROM.

10 Troubleshooting and Error Messages

Lists the possible causes and solutions for chromatography

problems or instrument failure.

medium_standard.book Page 4 Tuesday, February 17, 2004 10:14 AM

User Information 5

Contents

1 Introduction

About this Manual 14

Video supplements 14

Intended User 15

Conventions 16

Important Safety Warnings 17

Many internal parts of the instrument carry dangerous

voltages 17

Electrostatic discharge is a threat to instrument

electronics 17

Many parts are dangerously hot 18

Gases 18

General warnings 19

Safety and Regulatory Certifications 20

Information 20

Symbols 21

Electromagnetic compatibility 21

Sound Emission Certification for Federal Republic of

Germany 22

Fuses 23

Cleaning 23

Recycling the Product 23

2 Introduction to Headspace and to the G1888 Network Headspace Sampler

Overview of Headspace Analysis 26

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6User Information

The G1888 Network Headspace Sampler 28

Oven 30

Heated zones 31

Vial tray 31

Sampling system 31

Transfer line 31

Keypad and display 32

Pneumatics 32

Principles of Operation 34

General operation 34

Power on diagnostics 35

Standby Condition 36

Vial pressurization 37

Filling the sample loop 38

Loop equilibration 39

Injecting the sample 39

End of cycle and vial recovery 40

Modes of Operation 41

Standard headspace extraction 41

Multiple headspace extraction with multiple vial puncture 43

3TheKeypad

Accessing Functions 48

Editing setpoints 48

The Keypad 49

Keys and Their Functions 50

Enter 50

Clear 50

Numeric keypad 50

Tray Advance 50

Start/Stop key 51

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User Information 7

The Active Method Key 52

Zone Temps 52

Event Times 54

Vial Parameters 57

Menu Key 58

Load Method 59

Store Method 60

Chain Methods 61

Pressures 62

4 Advanced Functions

Using an Advanced Function 64

List of Advanced Functions 65

Advanced Function Descriptions 67

Stabilize Time 67

Parameter Increment 68

Vial number and location 70

Keyboard Lock 71

Manual Operation 72

Pressure Units 73

Stored Method 74

Multiple Headspace Extraction 75

Check for Ready 76

Reset 78

Valve Count 79

Vial Size 80

Zone Calibration 81

LAN Configuration 82

MAC Address 83

Enable RS232 83

Vent Valve purging 84

Leak test 86

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8User Information

Diagnostic 87

5 Preparing a Sample

Sample Preparation 90

Loading the Sample Tray 92

6 Entering a Method

Entering a Method 94

How to create a method 94

Entering Zone Temperatures 95

Setting Event Times 97

Setting Vial Parameters 100

Storing and Loading Methods 102

Storing a method 102

Loading a method 103

Chaining Methods 104

Activate a Method Chain 104

Deactivate a Method Chain 105

Using a Method Chain for MHE 106

7 Developing Methods

Developing Methods 108

Varying Oven Temperature 110

Varying Event Times 111

Vial equilibration time 111

Loop fill time 111

Matrix Effects 113

Changing the Sample Loop 114

Sample Size 115

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User Information 9

Vial Pressurization and Time 116

Vial pressurization 116

Vial pressurization time 116

Optimizing Carrier Gas Flow 117

8 Running a Sample

Running a Sample 120

Setting Conditions 121

Flow rates 121

Setting the carrier gas flow rate using MPC 122

Setting the vial pressurization gas pressure using MPC 123

Setting carrier flow using EPC 123

Setting vial pressurization flow using EPC 124

9 Maintaining the Instrument

Maintenance Schedule 126

Common Replacement Parts and Consumables 127

Removing the Loop Cover 130

Changing the Sampling Probe 132

Changing the Sample Loop 134

Replacing the Tubing Assembly 136

Checking Alignments 139

Checking the tray chain tension 139

Checking the position 1 sensor alignment 140

Checking the tray/shutter motor group alignment 140

Aligning the carousel 142

Leak Testing: General Information 144

Leak Test 148

Required tools 148

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10 User Information

Setup 148

Running the restriction test 149

Pressure decay test 150

Zone Calibration 156

Recommended tools 157

Procedure 157

Fuse locations 160

10 Troubleshooting and Error Messages

Table of Errors 165

Chromatographic Results 168

No peaks or reduced sensitivity 168

Poor retention time reproducibility 169

Poor area count reproducibility 170

Carryover in air or solvent blanks 171

Unwanted background noise or peaks 172

Vial Handling 173

Vial not dropped 173

Remove all vials 173

210 Tray too slow error 173

211 Tray motor encoder error 173

212 Tray position 1 error 174

220 Shutter error 174

230 Tray lifter error 174

240 Sample probe lifter error 175

250 Carousel error 175

260 6-port valve error 175

Vial not found in oven 176

Tray full! 176

Recovering from a vial delivery error 177

Heated Zone Temperatures 178

medium_standard.book Page 10 Tuesday, February 17, 2004 10:14 AM

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