Agilent Technologies G1888 Operation manual

Agilent Technologies
Agilent G1888 Network
Headspace Sampler
User Information
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2User Information
Notices
© Agilent Technologies, Inc. 2004
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.
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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.
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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
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