Agilent Technologies 7890A User manual

Agilent Technologies
Agilent 7890A
Gas
Chromatograph
Quick Reference

2
Notices
© Agilent Technologies, Inc. 2010
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Manual Part Number
G3430-90009
Edition
Third edition, January 2010
Second edition, September 2008
First edition, March 2007
Printed in USA and China
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3
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procedure, practice, or the like that, if not correctly performed or
adhered to, could result in damage to the product or loss of important
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CAUTION
CAUTION
WARNING

4

Quick Reference 5
Contents
1 Introduction
Online User Documentation 8
2 Keypad and Status Board
Keypad for the 7890A GC 10
The Run Keys 11
The Info Key 12
The Status Key 13
The GC Component Keys 14
The General Data Entry Keys 16
The Supporting Keys 18
Method Storage and Automation Keys 20
The Service Mode Key 22
Keypad Functionality When the GC Is Controlled by an Agilent
Data System 23
About GC Status 24
Status board 24
Alert tones 26
Blinking setpoint 26
About Logs 27
Run log 27
Maintenance log 27
System event log 27
3 7890A GC Installation
7890A GC Installation in 10 Steps 30

6QuickReference

7
Agilent 7890A GC
Quick Reference
Agilent Technologies
1
Introduction
Online User Documentation 8
This document provides an overview of the user infor-
mation materials that are available for your system as
well as a quick reference to the 7890A GC keypad and
system installation steps.
Important
See your Agilent GC and GC/MS Hardware User
Information & Utilities DVD that ships with your
instrument for localized versions of Safety and
Regulatory, Operation, Maintenance and
Troubleshooting information.

8QuickReference
Online User Documentation
Now your Agilent instrument documentation is in one
place, at your fingertips.
The hardware user information and utilities DVD that
ships with your instrument provides an extensive
collection of online help, videos, and books for the
Agilent 7890A GC, 7820A GC, 6890N GC, 6850 Series
GC, 7000 MS, 5975 Series MSD, 7693A ALS, and the
7683B ALS. Included are localized versions of the
information you need most, such as:
•Getting Familiar documentation
•Safety and Regulatory guides
•Site Preparation checklists
•Installation information
•Operating guides
•Maintenance information
•Troubleshooting details

9
Agilent 7890A GC
Quick Reference
Agilent Technologies
2
Keypad and Status Board
Keypad for the 7890A GC 10
The Run Keys 11
The Info Key 12
The Status Key 13
The GC Component Keys 14
The General Data Entry Keys 16
The Supporting Keys 18
Method Storage and Automation Keys 20
The Service Mode Key 22
Keypad Functionality When the GC Is
Controlled by an Agilent Data
System 23
About GC Status 24
Alert tones 26
Blinking setpoint 26
About Logs 27

10 Quick Reference
Keypad for the 7890A GC
The next several pages provide an overview of the
Agilent 7890A GC keypad functions. See the Agilent
7890A GC Advanced User Guide along with the
complete suite of documentation included on the
Agilent GC and GC/MS Hardware User Information &
Utilities DVD that shipped with your instrument for
more detailed information.

Quick Reference 11
The Run Keys
[Stop] Immediately terminates the run. If the GC is in the
middle of a run, the data from that run may be lost.
Refer to the Agilent 7890A GC Advanced User
Guide for information on how to restart the GC after
pressing [Stop].
[Prep Run] Activates processes required to bring the GC to the
starting condition dictated by the method (such as
turning off the inlet purge flow for a splitless injec-
tion or restoring normal flow from gas saver mode).
[Start] Starts a run after manually injecting a sample.
(When you are using an automatic liquid sampler or
gas sampling valve, the run is automatically acti-
vated at the appropriate time.)

12 Quick Reference
The Info Key
For context-sensitive help, press [Info]. For example, if
you press [Info] on a setpoint entry, the help provided
would be similar to: Enter a value between 0 and 350.
[Info] Provides context-sensitive help for the currently
shown parameter. For example, if Oven Temp is
the active line in the display (has a < next to it),
[Info] will display the valid range of oven tempera-
tures. In other cases, [Info] will display definitions
or actions that need to be performed.

Quick Reference 13
The Status Key
[Status] Toggles between setpoint/actual values for most
commonly reviewed parameters and displays
“ready,” “not ready,” and “fault” information.
When the Not Ready status light is blinking, a
fault has occurred. Press [Status] to see which
parameters are not ready and what fault has
occurred.

14 Quick Reference
The GC Component Keys
These keys are used to set the temperature, pressure,
flow, velocity, and other method operating parameters.
To display the current settings, press any one of these
keys. More than three lines of information may be
available. Use the scroll keys to view additional lines, if
necessary.
To change settings, scroll to the line of interest, enter
the change, and press [Enter].

Quick Reference 15
[Oven] Sets oven temperatures, both isothermal and
temperature programmed.
[Front Inlet]
[Back Inlet]
Controls inlet operating parameters.
[Col 1]
[Col 2]
[Aux Col #]
Controls column pressure, flow, or velocity.
Can set pressure or flow ramps.
[Front Det]
[Back Det]
[Aux Det #]
Controls detector operating parameters.
[Analog Out 1]
[Analog Out 2]
Assigns a signal to the analog output. The
analog output is located on the back of the
GC.
[Front Injector]
[Back Injector]
Edits injector control parameters such as
injection volumes and sample and solvent
washes.
[Valve #] Allows for configuration or control of the gas
sampling valve (GSV) and/or switching valves
1 to 8 on or off. Sets multiposition valve posi-
tion.
[Aux Temp #] Controls extra temperature zones such as a
heated valve box, a mass selective detector,
an atomic emission detector transfer line, or
an “unknown” device. Can be used for tem-
perature programming.
[Aux EPC #] Provides auxiliary pneumatics to an inlet,
detector, or other device. Can be used for
pressure programming.
[Column Comp] Creates a column compensation profile.

16 Quick Reference
The General Data Entry Keys

Quick Reference 17
[Mode/
Typ e ]
Accesses a list of possible parameters associated
with a component’s nonnumeric settings. For
example, if the GC is configured with a split/split-
less inlet and the [Mode/Type] key is pressed, the
options listed will be split, splitless, pulsed split, or
pulsed splitless.
[Clear] Removes a misentered setpoint before pressing
[Enter]. It can also be used to return to the top line
of a multiline display, return to a previous display,
cancel a function during a sequence or method, or
cancel loading or storing sequences and methods.
[Enter] Accepts changes you enter or selects an alternate
mode.
Scrolls up and down through the display one line at
a time. The < in the display indicates the active
line.
Numeric
Keys
Enters settings for the method parameters (Press
[Enter] when you are finished to accept the
changes.)
[On/Yes]
[Off/No]
Sets parameters, such as the warning beep,
method modification beep, and key click or for turn-
ing on or off a device like a detector.
[Front]
[Back]
Identifies configuration settings. For example,
when configuring a column, use these keys to iden-
tify the inlet and detector to which the column is
attached.
[Delete] Removes methods, sequences, run table entries,
and clock table entries. [Delete] also aborts the
adjust offset process for nitrogen-phosphorus
detectors (NPD) without interrupting other detec-
tor parameters. See the Agilent 7890A GC
Advanced User Guide for more details.

18 Quick Reference
The Supporting Keys

Quick Reference 19
[Time] Displays the current date and time on the first line.
The two middle lines show the time between runs,
the elapsed time and time remaining during a run,
and the last run time and post-time during a
post-run.
The last line always displays a stopwatch. While
on the stopwatch line, press [Clear] to set the
clock to zero and [Enter] to start or stop the stop-
watch.
[Post Run] Programs the GC to do something after a run, such
as bakeout or backflush a column. See the Agilent
7890A GC Advanced User Guide for details.
[Logs] Toggles among three logs: the Run Log, the Main-
tenance Log, and the System Event Log. The infor-
mation in these logs can be used to support Good
Laboratory Practices (GLP) standards.
[Options] Accesses the instrument parameters setup option,
such as keypad, display, and diagnostics. Scroll to
the desired line and press [Enter] to access the
associated entries. See the Agilent 7890A GC
Advanced User Guide for details.
[Config] Sets up components that are not automatically
detectable by the GC but are essential to running a
method, such as column dimensions, carrier and
detector gas types, makeup gas configurations,
sample tray settings, and column plumbing to
inlets and detectors. These settings are part of,
and are stored with, the method.
To view the current configuration for a component
(such as the inlet or detector), press [Config], then
the component key of interest.

20 Quick Reference
Method Storage and Automation Keys
These keys are for loading and storing methods and
sequences locally on your GC. They cannot be used to
access methods and sequences stored by your Agilent
ChemStation.