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2 Instrument Overview

Rear inside view

22 Agilent 990 Micro GC User Manual

Figure 8. Combined carrier gas and vent plate, exposed view

Figure 9. Top assembly LCD cable connector and port connection for COM 2 and COM 3

Carrier 1

Carrier 2

Backflush vent

Sample vent

Ana/Ref vent

DEGC vent

Ana/Ref vent

Sample vent

Backflush vent

Lower channel vent

Upper channel vent

Sample vent

Backflush vent

COM 2 and COM 3 ports

(inside the breakaway)

LCD cable

connector

Table of Contents3
Introduction9
Safety Information10
Important Safety Warnings10
Hydrogen Safety10
Safety Symbols11
Safety and Regulatory Information12
General Safety Precautions12
Shipping Instructions Cleaning14
Instrument Disposal14
Instrument Overview15
Principle of Operation16
Front View17
Front Inside View18
Rear View19
Rear Inside View21
Communication Ports23
Connecting a Channel Extension Cabinet24
Carrier Gas Connection26
Power27
Power Source27
Power Requirements27
Disposal28
Specifications28
Ambient Pressure29
Ambient Temperature29
Maximum Operation Altitude29
Storage Requirements29
Micro GC Cycle with Constant Pressure30
Micro GC Cycle with Ramped Pressure31
Installation and Use33
Pre-Installation Requirements34
Inspect the Shipping Packages34
Unpack the Micro GC34
Review the Packing List35
Agilent 990 Micro GC Installation36
Step 1: Connect Carrier Gas36
Step 2: Connect to Calibration Gas or Checkout Sample36
Step 3: Install Power Supply36
Step 4: Connect to Computer or Local Network37
Step 5: Install the Chromatography Data System37
Step 6: Assign an IP Address37
System39
Create the Test Method39
Perform a Series of Runs40
Shut down Procedure41
Long Storage Recovery Procedure41
Sample Gas Handling43
Installing Sample Inlets44
Installing and Configuring a Sample Inlet Manifold44
Sample Inlet Configurations46
Using the External Filter Unit47
Heated Zones48
Connecting a Sample to the 990 Micro GC49
Front Inlet49
Connecting Sample Inlet Accessories49
990 Micro GC Optional Pressure Regulators50
G3588-6886350
G3588-6886453
Manual Injection56
Manual Injection Guidelines56
Injection Procedure56
Manual Injection Flow Diagram58
Manual Injection Kits58
Micro GC Channels61
Carrier Gas62
Dynamic Electronic Gas Control (DEGC)63
Inert Sample Path63
Injector63
Column64
Molsieve 5Å Columns65
CP-Sil 5 CB Columns66
CP-Sil 13 CB and CP-Sil 19 CB Columns67
Poraplot 10 M Column68
Hayesep a 40 CM Heated Column69
CO X and al70
Volamine Column71
MES (NGA) and CP-WAX 52 CB Columns72
Column Conditioning73
Replacing Channel Column, Injector Die, and TCD74
Backflush Option75
Tuning the Backflush Time (Except on a Hayesep a Channel)77
Tuning the Backflush Time on a Hayesep a Channel78
Backflush to Detector79
CP-Sil 5 CB Backflush to Detector79
Al2O3 Backflush to Detector79
Tuning the Backflush Time80
To Disable Backflush81
Set Invert Signal Time82
Checkout Information83
C6+ Calorific Value Calculation84
TCD Detector84
Channel Exchange and Installation85
Replacement Procedure for Micro GC Channel86
Tools Required86
Channel Removal Procedure86
Channel Installation Procedure91
Replacement Procedures93
Removing the Covers94
Removing the Front Cover94
Removing the Rear Covers95
Sample Line Replacement97
Tools Required97
Replacement Procedure for Micro GC Sample Line97
RTS Filter Replacement100
Tools Required100
Replacement Procedure for Micro GC RTS Filter100
Septum Replacement for Manual Injection103
Septum Injection Port103
Genie Filter Membrane Replacement104
Tools Required104
Replacement Procedure for Genie Filter Membrane104
Connecting the External LCD106
LCD Touch Screen106
Communications111
Access the Connection Ports112
990 Chromatography Data Systems115
Ethernet Networks116
IP Addresses116
Example Network Configurations117
Subnet 1119
Subnet 2119
USB Wi-Fi120
Frequently Asked Questions (FAQ)121
Glossary of Network Terms121
External I/O123
Errors127
Error Handling128
Error List129
Micro GC Biogas Analyzers135
Biogas Analyzer135
Biogas Analyzer Extended135
Checkout Information136
CP-Molsieve Channel137
CP-Poraplot U Channel138
CP Sil 5 CB Channel139
Certificate of the Universal Gas Calibration Standard140
The Biogas Analyzer Method141
Micro GC Natural Gas Analyzer143
Agilent 990 Micro GC - Natural Gas Analyzers144
Introduction144
Types of Agilent 990 Micro GC - Natural Gas Analyzers144
Agilent 990 Micro GC - Natural Gas Analyzer a and the Extended Version144
Agilent 990 Micro GC - Natural Gas Analyzer B and the Extended Version145
Checkout Information146
Introduction146
Natural Gas Analyzer a and the a Extended Version147
Natural Gas Analyzer B and B Extended Version154
Certificate of the NGA Gas Calibration Standard160
Certificate of the Universal Gas Calibration Standard161
Typical Method Settings for Natural Gas Analyzers162
Carrier Gas Type Configuration164
Procedure to Change the Carrier Gas Type165
Method for CP-Molsieve 5A Channel with Carrier Gas Argon168

Brand	Agilent Technologies
Model	990
Category	Laboratory Equipment
Language	English

Agilent Technologies 990 User Manual

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