Name: LI-COR LI-7700
Brand: LI-COR
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LI-7700

Open Path CH

Analyzer

Instruction Manual

Declaration of Conformity3
Table of Contents6
Welcome11
General Information14
Overview of the LI-770014
What's What15
The LI-7700 Open Path CH15
Spares Kit and Cables16
7550-101 Auxiliary Sensor Interface (Optional)18
Sonic Anemometer Interface Cables (Optional)18
LI-7550 Analyzer Interface Unit (Optional)19
LI-7700 Components and Connections20
Basic Setup22
Install the LI-7700 Computer Software22
Power on22
Connect the Ethernet Data Cable23
Launch the Software and Connect to an LI-770024
Mirrors - Cleaning and Care25
Operation26
Introduction to the LI-7700 Interface Software26
Main View26
Tool Bar27
Settings Bar28
Charting Pages28
Configuring the LI-770031
Pc/Network Data Logging (Ethernet Output)31
Logging Status Columns32
Splitting Files32
Operating Temperature Range33
Manual Controls34
Configuring Mirror Heater Controls35
Configuring the Spin Motor Control37
Instrument Name and Address40
Setting the Time41
Output Rate43
Configuration Files44
Creating an Instrument Configuration File44
Implementing a Configuration File44
LI-7700 Analog Inputs45
Auxiliary Sensor Interface Terminals (Option 1)46
Connecting Sensors to the Auxiliary Sensor Interface48
Thermocouple Inputs49
Configuring Auxiliary Inputs (LI-7700)50
Deploying the LI-7700 and Accessories52
Mounting the LI-770052
Vibrations52
Positioning the LI-770053
Grounding54
Mounting the 7550-101 Auxiliary Sensor Interface54
Attaching the Mirror Cleaner/Washer Assembly55
Mounting the Washer Reservoir56
Operation with the LI-7550 Analyzer Interface Unit58
Introduction to the LI-755058
What's What59
Spares Kit and Cables59
Cable Connections61
Basic Setup63
Power on63
Connecting to the LI-7700 and LI-7550 (Ethernet)63
Getting an LI-7700 to Talk to an LI-755064
Using an LI-7700 with an LI-7500A or LI-7200 COO66
Connecting to the LI-7700 and LI-7550 (RS-232 Serial)68
Using the LI-755069
USB Data Logging69
About USB Devices71
USB Storage Capacity71
Analog Inputs (LI-7550)72
Auxiliary Sensor Interface Terminals (Option 2)73
Electrical Connections75
Analog Input Time Delays76
LI-7550 Clock77
LI-7550 Outputs78
Ethernet78
Sdm78
Rs-23282
Analog83
Analog Output Time Delays84
Analog Output Hardware Configuration (Option 3)84
Mounting the LI-7550 Analyzer Interface Unit86
Data Files88
File Header88
Data89
Diagnostics Header91
Status Columns93
Making Flux Measurements with the LI-770094
Computing Fluxes95
Example Calculation98
Full Computation98
Simplified Computation100
Finding Multipliers101
Low Resolution Look-Up Tables101
Parametric Equations104
High Resolution Digital Tables107
Zero Flux Validation112
References113
Theory and Equation Summary114
Absorption of Infrared Radiation by a Gas114
Temperature Dependence of Absorption Line Strength115
Line Broadening Mechanisms115
Wavelength Modulation Spectroscopy117
Compensating for Temperature and Pressure Changes118
Compensating for Water Vapor: Equivalent Pressure, P120
Derivation of Multipliers for Flux Measurements122
References127
Advanced Operation128
Calibration128
Diagnostics130
Laser Temperature Control130
Opening the Laser Temperature Control Dialog131
Manual Line Lock Example132
Re-Enabling Automatic Line Lock134
Networking134
Enabling Ipv6 on Windows XP134
The LI-7700 Finder Application135
Communications Grammar141
Introduction141
LI-7700 Communications141
Element Descriptions142
Grammar142
Configuration File Grammar148
Sending Commands151
Appendices152
Appendix A. Specifications152
LI-7700 Open Path CH 4 Analyzer152
7700-101 Washer Assembly153
LI-7550 Analyzer Interface Unit (Optional)153
7550-101 Auxiliary Sensor Interface (Optional)153
Power Requirements Summary154
Appendix B. Maintenance155
Changing the Internal Desiccant Bottle155
Changing the Thermocouple157
Changing the LI-7700 Fuse158
Changing the LI-7550 Fuse158
Appendix C. Troubleshooting159
Appendix D. Suppliers162
Chemical Sources162
Calibration Gases163
Turck® Cables164
Industrial Rated USB Flash Drives165
Mounting Hardware165
Warranty166
Index168

Brand	LI-COR
Model	LI-7700
Category	Measuring Instruments
Language	English

LI-COR LI-7700 User Manual

Table of Contents

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LI-COR LI-7700 Specifications

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