Agilent Technologies Graphite Tube Atomizer GTA 120 User manual

Agilent Graphite Tube
Atomizer GTA 120
(Including GTA Viewing and Fume
Extraction Apparatus)
User’s Guide

2 Agilent Graphite Tube Atomizer GTA 120 User’s Guide
Notices
© Agilent Technologies, Inc.
1993, 1995-1997, 2003, 2004, 2010 and
2012, 2016, 2018
No part of this manual may be
reproduced in any form or by any
means (including electronic storage
and retrieval or translation into a
foreign language) without prior
agreement and written consent from
Agilent Technologies, Inc. as governed
by United States and international
copyright laws.
Manual Part Number
8510118500
Edition
Tenth edition, April 2018
Agilent Technologies Australia [M] Pty
Ltd
679 Springvale Road
Mulgrave, VIC, 3170, Australia
www.agilent.com
Warranty
The material contained in this
document is provided “as is,” and is
subject to being changed, without
notice, in future editions. Further, to
the maximum 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 particular purpose.
Agilent shall not be liable for errors
or for incidental or consequential
damages in connection with the
furnishing, use, or performance 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.
Technology Licenses
The hardware and/or software
described in this document are
furnished under a license and may be
used or copied only in accordance
with the terms of such license.
Restricted Rights Legend
If software is for use in the
performance of a U.S. Government
prime contract or subcontract,
Software is delivered and licensed as
“Commercial computer software” as
defined in DFAR 252.227-7014 (June
1995), or as a “commercial item” as
defined in FAR 2.101(a) or as
“Restricted computer software” as
defined in FAR 52.227-19 (June 1987)
or any equivalent agency regulation or
contract clause. Use, duplication or
disclosure of Software is subject to
Agilent Technologies’ standard
commercial license terms, and non-
DOD Departments and Agencies of the
U.S. Government will receive no
greater than Restricted Rights as
defined in FAR 52.227-19(c)(1-2) (June
1987). U.S. Government users will
receive no greater than Limited Rights
as defined in FAR 52.227-14 (June
1987) or DFAR 252.227-7015 (b)(2)
(November 1995), as applicable in any
technical data.
Safety Notices
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.
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.
WARNING
CAUTION

Contents
Agilent Graphite Tube Atomizer GTA 120 User’s Guide 3
Contents
1. Safety Practices and Hazards 7
General 7
Verifying Safe State 8
Warning Symbols 9
Notes 11
Color Coding 11
Electrical Hazards 11
Compressed Gas Hazards 13
Chemical Hazards 13
Other 14
Electromagnetic Compatibility 14
EN55011/CISPR11 14
ICES/NMB-001 15
South Korean Class A EMC declaration 16
2. Introduction 17
Working Environment 18
Specifications 18
Environmental Conditions 18
Power 18
Gas Supplies 19
Water Supply 20
Weights and Dimensions 21

Contents
4 Agilent Graphite Tube Atomizer GTA 120 User’s Guide
3. Getting Started 23
GTA Control Unit 24
Front View 24
Back View 25
GTA Furnace 26
Water Supplies 26
Gas Supplies 27
4. Using Your GTA 29
Installation 29
Moving the Accessory 30
Installing the Control Unit 30
Installing the Furnace 30
Non-Zeeman GTA 30
Zeeman GTA 32
Setting the Gas Supply 34
Turning on the Water Supply 34
Installing the Tube-CAM Camera Option – Agilent 240/280 AA Only35
Installing the Mirror 35
The Optional GTA Viewing/Fume Extraction Accessory 36
Installing the Programmable Sample Dispenser (PSD) 36
Graphite Tubes and Platforms 36
Types of Available Graphite Tubes 36
Types of Available Graphite Platforms 37
Inserting a Graphite Tube 38

Contents
Agilent Graphite Tube Atomizer GTA 120 User’s Guide 5
Removing a Graphite Tube 40
Removing Your GTA Furnace 40
5. The GTA Viewing/Fume Extraction Accessory (Optional) 43
Requirements for Fume Extraction 44
Installing the GTA Viewing/Fume Extraction Accessory 45
Installing the GTA Viewing/Fume Extraction Accessory to
the Instrument 45
Installing the Extraction System to the Laboratory Exhaust
System 48
Operation and Maintenance 51
6. Maintenance 53
General 53
Graphite Shroud and Electrodes 53
Hoses and Connections 54
Cleaning the Quartz Windows 54
Removing and Replacing Electrodes 55
Non-Zeeman Electrode Removal 55
Non-Zeeman Electrode Replacement 58
Zeeman Electrode Removal 59
Zeeman Electrode Replacement 62
Fuses 63

Contents
6 Agilent Graphite Tube Atomizer GTA 120 User’s Guide
This page is intentionally left blank.

Safety Practices and Hazards
Agilent Graphite Tube Atomizer GTA 120 User’s Guide 7
1. Safety Practices and Hazards
General 7
Verifying Safe State 8
Warning Symbols 9
Notes 11
Color Coding 11
Electrical Hazards 11
Compressed Gas Hazards 13
Chemical Hazards 13
Other 14
Electromagnetic Compatibility 14
General
A Graphite Tube Atomizer, used in conjunction with an Atomic
Absorption spectrometer, uses compressed inert gases and high
voltages. The system generates radiant energy and hazardous wastes
including corrosive fluids and flammable liquids.
Careless, improper or unskilled use of this system can cause death or
serious injury to personnel, or severe damage to equipment and
property.
All users of an AA (Atomic Absorption) and GTA (Graphite Tube
Atomizer) instrument must be familiar with the correct operating
procedures. Appropriate safety practices have been included in this
operation manual and your spectrometer operation manual, to help
you operate the equipment safely. Read all safety practices
thoroughly before attempting to operate your system.
The covers on instruments and accessories must not be removed by
the operator, except as permitted for the routine maintenance tasks
detailed in the relevant operation manuals.
Service is to be performed only by Agilent field support engineers.

Safety Practices and Hazards
8Agilent Graphite Tube Atomizer GTA 120 User’s Guide
The safety practices described below are provided to help you
operate your instrument safely. Read these safety practices
thoroughly before attempting to operate the instrument and always
operate the spectrometer in accordance with these safety practices.
The GTA uses interlocks and covers which are designed to prevent
accidental contact with any of the potential hazards. It is good
practice, however, to develop safe working habits which do not
depend upon the correct operation of the interlocks for safe
operation. It is essential that no interlock or cover is bypassed,
damaged or removed.
Fumes generated by the GTA can be hazardous, and must be
extracted by an exhaust system. Ensure that an exhaust of the
appropriate type is fitted, as specified in the pre-installation
instructions. It must be vented to the outside air, never within the
building. Regularly check the exhaust system by smoke test to ensure
that it is functioning correctly. Always switch the exhaust fan on
before operating the instrument.
WARNING
Noxious Gas
An exhaust system must be used with an Agilent AA flame and furnace
instruments to remove hazardous and toxic gases.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
Verifying Safe State
The following general safety precautions must be observed during all
phases of operation, maintenance and service of this instrument.
To ensure continued safety of the instrument after maintenance or
service procedures verify the instrument is returned to a safe state
for the user. This includes running performance checks to verify the
instruments safety systems are functioning correctly. Check the
general condition of the instrument during operation for wear or
signs of corrosion that are likely to inhibit function or safety.

Safety Practices and Hazards
Agilent Graphite Tube Atomizer GTA 120 User’s Guide 9
Failure to comply with these precautions or with specific warnings
elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Agilent
Technologies assumes no liability for the customer’s failure to
comply with these requirements.
Warning Symbols
The following is a list of symbols that appear in this manual in
conjunction with warnings on the instrument. The hazard they
describe is also shown.
A triangular symbol indicates a warning. The meanings of the
symbols that may appear alongside warnings in the documentation
or on the instrument itself are as follows:
Corrosive liquid
Electrical shock Explosion hazard
Eye hazard Fire hazard
Heavy weight
(danger to feet)
Heavy weight
(danger to hands)
Hot surface
Magnetic hazard
Moving parts
Noxious gas Toxic hazard

Safety Practices and Hazards
10 Agilent Graphite Tube Atomizer GTA 120 User’s Guide
The following symbol may be used on warning labels attached to the
instrument or in this manual. When you see this symbol, refer to the
relevant operation or service manual for the correct procedure
referred to by that warning label.
The following symbols appear on the instrument for your
information.
I Mains power on
0Mains power off
Fuse
Single phase alternating current
Disconnect all power plugs
Inlet gas
Inlet for cooling liquid
Outlet for cooling liquid