Agilent Technologies LTM II Series Bedienungsanleitung
Agilent LTM Series II Rapid Heating/Cooling System for
Agilent 8890 GCs
User Guide
User Guide
Notices
© Agilent Technologies, Inc 2019
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Manual Part Number
G6680-90000
Edition
First edition, November 2019
Printed in USA
Agilent Technologies, Inc.
2850 Centerville Road
Wilmington, DE 19808-1610 USA
安捷伦科技 （上海）有限公司
上海市浦东新区外高桥保税区
英伦路 412 号
联系电话：（800）820 3278
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 warran-
ties, either express or implied, with regard to
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herein, including but not limited to the
implied warranties of merchantability and fit-
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not be liable for errors or for incidental or
consequential damages in connection with
the furnishing, use, or performance of this
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herein. Should Agilent and the user have a
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trol.
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.
User Guide 3
Contents
1Introduction
Overview 8
LTM System Components 9
LTM oven door 9
Power supply 9
Transfer line modules 10
Column modules 10
Fan bracket 11
Gasket 12
Union brackets 12
2Safety
Important Safety Warnings 16
Some parts of the LTM system carry dangerous voltages 16
Electrostatic discharge is a threat to GC electronics 16
LTM parts are dangerously hot 16
Hydrogen Safety 17
Safety and Regulatory Certifications 18
Information 18
Symbols 18
Cleaning 20
3 Column Modules
Overview 22
To Attach a CFT Nut and Ferrule to a Capillary Column 23
Available ferrules 23
Tools Required 23
Swage the ferrule onto the column 24
Swaging Quality Inspection 28
To Disconnect Fused Silica Tubing From a CFT Fitting 29
To Select In and Out Column Segments 30
To Install an LTM Column Module onto a Transfer Line Module 31
To Connect the Column to the CFT Unions 38
To Install a Column Module Assembly in the LTM Oven Door 45
To Install an In or Out Segment to the Column Module Union 52
4User Guide
To Remove a Column Module Assembly from the LTM Oven Door 54
To Remove a Column Module Assembly from a Transfer Line Module 56
To Remove the LTM Top Cover 58
To Connect the Column Using Valco ULM Unions 59
4Operation
Operating the LTM System 62
LTM Series II column module configuration 62
Configuring LTM columns 62
LTM Series II columns and Agilent data systems 63
Programming the LTM column modules 63
LTM programming and total run time 63
5 Troubleshooting
Accessing LTM Diagnostic Information at the GC 66
Error Messages 67
Fan LEDs 69
Checking for Leaks 70
Column Configuration Problems 71
6 Consumable and Replacement Parts
Consumables and Replacement Parts 74
7 Site Preparation
Environmental Conditions 78
Benchtop Space Requirements 78
Electrical Requirements 78
8 Installation
Overview 80
Tools and Materials Required 82
Prepare the GC 83
Cool the GC and prepare the MS (if installed) 83
Update GC firmware (GC only) 83
Install the GC metal left side panel 83
Remove the existing oven door 85
Install the LTM System 86
Install the LTM oven door 86
User Guide 5
Connect the power supply and communications cables 86
Install the fan module 89
Install the LTM column modules 91
Install the In and Out segments for each column module 91
Check the cable routing 91
Install the GC covers 91
Configure the column modules 91
Check for leaks 93
Prepare the LTM system for use 94
6User Guide
1Introduction
8User Guide
Overview
The Agilent Low Thermal Mass Series II Rapid Heating/Cooling System for Agilent 8890 GC
(LTM) is designed to enhance the column temperature programming capabilities of the Gas
Chromatograph (GC). The LTM oven door accepts up to two LTM column modules, each of
which contains a GC capillary column that can be independently temperature programmed.
These column modules provide a fast ramp temperature programming capability compared to
the standard GC oven. The column modules interface through the existing oven to the GC’s
existing samplers, inlets, detectors, and other accessories.
The Agilent LTM system achieves its ramp rates by packaging a capillary GC column into the
LTM column module. Within a module, the GC column is formed into packed coils using
resistively heated wire and a temperature sensor. The high efficiency of this proprietary design
provides fast heating and cooling of the GC columns with greatly reduced power requirements
compared to a conventional GC oven. Mounting the modules outside the conventional GC
oven allows them to cool rapidly with ambient air. The GC oven heats the columns which
connect the LTM column module to the inlet or detector. This system provides great flexibility
to configure the GC oven in different ways using the available inlet, detector, and capillary flow
technology (CFT) flow-splitting options.
The LTM is compatible with the Agilent 8890 GCs with firmware revision 2.0.0 or greater.
1Introduction
User Guide 9
LTM System Components
The LTM system consists of the major components listed below
LTM oven door
The main component of the LTM System is the LTM oven door. See Figure 1. This door
contains:
•The electronics which control the LTM column module temperatures
•The LTM column modules
•The cooling fans
•The unions and mounting hardware for connecting the LTM column modules to the other
GC components
Figure 1. LTM oven door as installed on a 8890 GC
Power supply
The LTM system requires 1 or 2 separate power supplies, depending on the option ordered.
Two modules can share one power supply. However, when using 5-inch column modules,
optional faster heating requires use of two power supplies. See Figure 2.
Figure 2. LTM power supply (power cord not shown)
LTM oven door
Power supply
Connects to electron-
ics board
1Introduction
10 User Guide
Transfer line modules
The transfer line module provides the interface between the column module and the GC oven.
The transfer line module has two heated tubes (transfer lines) through which the column leads
pass from the LTM column module into the oven. These transfer lines are temperature
programmable to prevent cold spots in the sample path between the GC oven and the LTM
column module. Each LTM column module attaches to a transfer line module, and the
resulting module assembly inserts into slots in the LTM oven door. See Figure 3.
NOTE
The current transfer line module and LTM column module design uses guides in the column
module to correctly position the column module onto the transfer line module. The column
module secures into the transfer line module using two screws.
Figure 3. LTM transfer line module
Column modules
A column module contains the analytical column, column heater, and temperature sensor.
(see Figure 4.). The standard format accommodates a 12.7-cm (5-inch) coil size.
For a single 5-inch module
Inhaltsverzeichnis
