Agilent Technologies 7890A Manuale utente

Agilent Technologies

Agilent 7890A

Gas Chromatograph

Operating Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or transla-

tion into a foreign language) without prior

agreement and written consent from Agi-

lent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

G3430-90011

Edition

Third edition, June 2010

Second edition, September 2008

First edition, March 2007

Printed in USA or China

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610 USA

Agilent Technologies, Inc.

412 Ying Lun Road

Waigoaqiao Freed Trade Zone

Shanghai 200131 P.R.China

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 connection

with the furnishing, use, or perfor-

mance 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 sep-

arate agreement shall control.

Safety Notices

CAUTION

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. 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 performed or adhered to,

could result in personal injury or

death. Do not proceed beyond a

WARNING notice until the indicated

conditions are fully understood and

met.

Operating Guide 3

Contents

1 Introduction

Where to Find Information 8

Online User Documentation 8

Chromatography Using a GC 10

The Front View of the Agilent 7890A GC 11

The Back View of the Agilent 7890A GC 11

The Inlets 12

The GC Column and Oven 15

Capillary Flow Technology 16

Detectors 17

The Operating Panel 18

The display 18

Status lights 19

Beeping instrument 19

Blinking setpoint 20

The keypad 21

2 Operating Basics

Overview 24

Instrument Control 25

Correcting Problems 26

To Start Up the GC 27

To Shut Down the GC for Less Than a Week 28

To Shut Down the GC for More Than a Week 29

3 Running a Method or a Sequence from the Keypad

Loading, Storing, and Running Methods from the Keypad 32

To load a method 32

To store a method 32

To manually inject a sample with a syringe and start a run 32

To run a method to process a single ALS sample 32

To abort a method 33

Loading, Storing, and Running Sequences from the Keypad 34

To load a sequence 34

To store a sequence 34

4Operating Guide

To start running a sequence 34

To pause a running sequence 35

To resume a paused sequence 35

To stop a running sequence 35

To resume a stopped sequence 35

Aborting a sequence 35

To resume an aborted sequence 36

4 Keypad Operation

The Run Keys 38

The Service Mode Key 38

The GC Component Keys 39

The Status Key 40

The Info Key 41

The General Data Entry Keys 42

The Supporting Keys 43

Method Storage and Automation Keys 44

Keypad Functionality When the GC Is Controlled by an Agilent Data

System 45

About GC Status 46

Status Board 46

Alert tones 46

Error conditions 47

Blinking setpoint 47

About Logs 48

Maintenance log 48

5 Operating the 7693A Automatic Sampler

Placing Vials in the 7693A ALS 50

Placing vials in the sample tray 51

Placing vials in the turret (no sample tray) 52

Placing vials for sandwich injections 52

To Park the Injector 54

To Install a Syringe on the 7693A ALS 55

To Remove the Syringe on the 7693A ALS 58

To Configure Solvent/Waste Vials 59

7693A ALS Prerun Checklist 60

Operating Guide 5

To Move the 7693A ALS to the Other GC Inlet 61

Check your work 62

Impact on your data system 62

To Adapt the 7693A ALS for the COC Inlet 63

6 Operating the 7683 Automatic Sampler

7683 ALS Turret Types 66

To Change the 7683 ALS Turret 67

To Move the 7683 ALS to the Other GC Inlet 69

To Park the Injector 71

To Install a Syringe on the 7683 ALS 72

To Remove the Syringe on the 7683 ALS 74

To Configure Solvent/Waste Vials 75

To Load Vials in the 7683 ALS Turret 77

To Load Vials in the 7683 ALS Sampler Tray 77

7683 ALS Prerun Checklist 78

To Adapt the 7683 ALS for the COC Inlet 79

To Install a 200-µm Column With the COC Inlet 80

To Manually Inject Onto a 200-µm Column With the COC Inlet 80

7 About Methods, Sequences, and Data Analysis

What Is a Method? 82

What Is Saved in a Method? 82

What Happens When You Load a Method? 83

What Is a Sequence? 83

Automating Data Analysis, Method Development, and Sequence

Development 83

6Operating Guide

Agilent 7890A Gas Chromatograph

Operating Guide

Agilent Technologies

Introduction

Where to Find Information 8

Chromatography Using a GC 10

The Front View of the Agilent 7890A GC 11

The Back View of the Agilent 7890A GC 11

The Inlets 12

The GC Column and Oven 15

Capillary Flow Technology 16

Detectors 17

The Operating Panel 18

This document provides an overview of the individual

components that make up the Agilent 7890A Gas

Chromatograph (GC).

8Operating Guide

1Introduction

Where to Find Information

In addition to this document, Agilent provides several

learning products that document how to install, operate,

maintain, and troubleshoot the Agilent 7890A GC.

Before operating your GC, be sure to read the safety and

regulatory information included on the Agilent GC and

GC/MS Hardware User Information & Utilities DVD. The

most common safety hazards when working on the GC are:

•Burns caused by touching heated areas on or in the GC

•Release of pressurized gas containing hazardous chemical

compounds caused by opening inlets

•Glass cuts or puncture wounds caused by sharp capillary

column ends

•Use of hydrogen as a GC carrier gas

Online User Documentation

Now your Agilent instrument documentation is in one place,

at your fingertips.

The Agilent GC and GC/MS Hardware User Information &

Utilities DVD that ships with your instrument provides an

extensive collection of online help, videos, and books for

current Agilent gas chromatographs, mass selective detectors,

and GC samplers. Included are localized versions of the

information you need most, such as:

•Getting Familiar documentation

•Safety and Regulatory guide

•Site Preparation information

•Installation information

Introduction 1

Operating Guide 9

•Operating guides

•Maintenance information

•Troubleshooting details

10 Operating Guide

1Introduction

Chromatography Using a GC

Chromatography is the separation of a mixture of

compounds into individual components.

There are three major steps involved with separating and

identifying components of a mixture using a GC. They are:

1Injecting a sample into the GC. (This takes place at the

inlet.)

2Separating the sample into individual components. (This

takes place inside the column in the oven.)

3Detecting what compounds were in the sample. (This is

done in the detector.)

During this process, status messages from the Agilent 7890A

GC are displayed, and user changes to parameter settings

can be made through the operating panel.

Each part of this process is described in brief on the

following pages of this document. Refer to the Advanced

User Guide for more details.

Inlet

Oven

Detector

Operating panel

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