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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User Information 11
Open or short 178
Zone at or near ambient 178
Zone does not stabilize 178
Analysis aborted due to temperature error 178
Pressure Readings 179
GC goes not ready during a run 179
GC pressure reading does not match Headspace Sampler
pressure reading 179
Pressures are below normal operating pressures 179
Synchronization With GC Start or GC Ready: GC Does Not
Start 180
Communication Between the PC and Headspace Sampler 181
Internal Communication Serial I/O Errors 182
Memory and Processor Errors 183
Blank Display 184
Power ON, No Response 185
Lost Method in Active Memory 186
Index
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12 User Information
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13
Agilent G1888 Network Headspace Sampler
User Information
Agilent Technologies
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
This chapter gives an overview of the manual and provides
safety information.
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14 User Information
Introduction
About this Manual
The G1888 Network Headspace Sampler User Information manual
explains how to use the G1888 Network Headspace Sampler. It includes
all the basic information the user needs to develop methods, use the
sampler to carry out analyses, and maintain and troubleshoot the
sampler. For site preparation requirements and checkout procedures, see
the G1888 Network Headspace Sampler Site Preparation and
Installation Manual.
Video supplements
Click this icon when it appears throughout the manual to view
video supplements to certain procedures.
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Introduction
User Information 15
Intended User
This manual is intended for users who understand the basics of
gas chromatography. Although the manual contains some
headspace theory, it primarily provides operating, maintenance,
and troubleshooting information for the G1888 Network
Headspace Sampler.
This manual describes using the Headspace Sampler in
standalone mode. However, many of the procedures covered in
this manual also apply to users operating the Headspace
Sampler with an Agilent integrated data system such as the
Agilent Chemstation.
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16 User Information
Introduction
Conventions
The following conventions are used in this manual:
1Braces { } enclose a generic name for which you should substitute
specific information. For example, {setpoint} means you should key
in the numeric value you desire for the setpoint.
2Text in Bold means that you should press the key by that name. Be
careful how you enter information. For example, the key sequence
Menu, ., 1, Enter indicates that you should press the Menu key, the .
key, the 1 key, and then Enter. It does not mean that you should press
a comma (“,”). There is no comma on the sampler’s keypad.
3Text in Courier indicates the message you will read on the
sampler display.
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Introduction
User Information 17
Important Safety Warnings
Before moving on, there are several important safety notices
that you should always keep in mind when using the Headspace
Sampler.
Many internal parts of the instrument carry dangerous voltages
If the instrument is connected to a power source, even if the
power switch is off, potentially dangerous voltages exist on:
•The wiring between the instrument power cord and the AC
power supply, the AC power supply itself, and the wiring
from the AC power supply to the power switch
With the power switch on, potentially dangerous voltages also
exist on:
•All electronics boards in the instrument
•The internal wires and cables connected to these boards
•The wires for any heater (such as the oven)
Electrostatic discharge is a threat to instrument electronics
The printed circuit (PC) boards in the instrument can be
damaged by electrostatic discharge. Do not touch any of the
boards unless it is absolutely necessary. If you must handle
WARNING All these parts are shielded by covers. With the covers in place, it
should be difficult to accidentally make contact with dangerous
voltages. Unless specifically instructed to, never remove a cover
unless the heated zones are turned off.
WARNING If the power cord insulation is frayed or worn, the cord must be
replaced. Contact your Agilent service representative.
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18 User Information
Introduction
them, wear a grounded wrist strap and take other antistatic
precautions. Wear a grounded wrist strap any time you must
remove the electronics cover.
Many parts are dangerously hot
Many parts of the instrument operate at temperatures high
enough to cause serious burns. These parts include but are not
limited to:
•The carousel and its contents
•The sample probe/loop assembly
You should always cool these areas of the instrument to room
temperature before working on them. They will cool faster if you
first set the temperature of the heated zone to room
temperature. Turn the zone off after it has reached the setpoint.
If you must perform maintenance on hot parts, use a wrench
and wear gloves. Whenever possible, cool the part of the
instrument that you will be maintaining before you begin
working on it.
Gases
•Do not use flammable carrier gases.
•Do not use hydrogen as a carrier gas in the Headspace
Sampler. Hydrogen creates a potential explosion hazard due
to the venting of gases during operation and “standby”.
•Wear eye protection when using compressed gas to avoid eye
injury.
•Fasten all compressed gas cylinders securely to an
immovable structure or permanent wall.
•Store and handle compressed gases in accordance with
relevant safety codes.
•Do not put gas cylinders in the path of a hot air vent
(including a GC oven exhaust).
WARNING Be careful when working behind the instrument. During cool-down
cycles, the instrument emits hot exhaust which can cause burns.
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Introduction
User Information 19
General warnings
•Perform periodic leak checks on supply lines, fittings, and
pneumatic plumbing to prevent a potentially hazardous
condition.
•To avoid a potential shock hazard when using liquid solution
to locate leaks, turn the main power switch off and
disconnect the main power cord. Be careful not to spill leak
solution on electrical leads.
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20 User Information
Introduction
Safety and Regulatory Certifications
The Headspace Sampler conforms to the following safety
standards:
•Canadian Standards Association (CSA): C22.2 No. 1010.1
•CSA/Nationally Recognized Test Laboratory (NRTL):
UL 61010A–1
•International Electrotechnical Commission (IEC): 61010–1
•EuroNorm (EN): 61010–1
The instrument conforms to the following regulations on
Electromagnetic Compatibility (EMC) and Radio Frequency
Interference (RFI):
•CISPR 11/EN 55011: Group 1, Class A
•IEC/EN 61326
•AUS/NZ
This ISM device complies with Canadian ICES-001. Cet appareil
ISM est conforme a la norme NMB—001 du Canada.
The instrument is designed and manufactured under a quality
system registered to ISO 9001.
Information
The Agilent Technologies Headspace Sampler meets the
following IEC (International Electro-Technical Commission)
classifications: Safety Class I, Transient Overvoltage
Category II, Pollution Degree 2.
This unit has been designed and tested in accordance with
recognized safety standards and is 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
Headspace Sampler has been compromised, disconnect the unit
from all power sources and secure the unit against unintended
operation.
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