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General| Gas Measured | CH4, CO2, H2O |
|---|---|
| Measurement Technique | Off-axis Integrated Cavity Output Spectroscopy (OA-ICOS) |
| Category | Gas Analyzer |
| Data Output | Ethernet |
| Power Requirements | 100-240 VAC, 50/60 Hz, 100W |
| Accuracy | CH4: ±1% of reading, CO2: ±1% of reading, H2O: ±1% of reading |
| Power Supply | 100-240 VAC, 50/60 Hz, 100W |
| Output | Ethernet |
| Operating Temperature | 5°C to 40°C |
| Operating Temperature Range | 5°C to 40°C |
Details and descriptions of the various components included with the LI-7820 analyzer.
Details the instrument's web interface, including the home page, indicators, buttons, graphs, remarks, and layout customization.
Covers software settings, time configuration, network setup, Wi-Fi management, and LI-8100/A communication.
Explains how to perform instrument calibration and access diagnostic information for performance monitoring.
Instructions for turning the LI-7820 analyzer on and its startup sequence.
Details on using the universal power adapter, rechargeable batteries, and external power sources.
Steps to establish a connection to the LI-7820 using wired or wireless network interfaces.
Guide to connecting to the instrument's local wireless network using Wi-Fi.
Instructions for connecting the instrument to a network via an Ethernet cable.
Procedure for configuring the Wi-Fi setting on the LI-7820 through the instrument's interface.
Explanation of the information displayed on the instrument's panel, including status and measurements.
Lists and defines the status codes displayed by the instrument for normal operation and errors.
Steps for safely powering down the LI-7820, including sleep mode and proper shutdown procedures.
Guidelines for short-term and long-term storage of the LI-7820 analyzer.
Instructions on how to properly package and prepare the LI-7820 for shipping.
Diagram and explanation of the internal air flow path during measurement and shutdown.
Details on using the LI-7820 for soil gas flux measurements, including required accessories.
Instructions for connecting sample tubing to the instrument's air inlet and outlet ports.
Guidance on setting up plumbing for subsampling gas from a main sample line.
Methods for transferring logged data from the LI-7820 using TCP/IP or MQTT protocols.
Steps to export data from the instrument via the web interface by specifying date and time ranges.
Description of the file header, data header, and units within the exported data files.
Guidelines for securely mounting the LI-7820 instrument in a standard equipment rack.
Solutions for problems connecting to the instrument via wired, wireless, or Android OS network rejection.
Addresses drifting readings, unstable pressures, data oscillations, and interface display problems.
Guidance on resolving status/warning messages and specific error codes like Code 128.
Covers setting zero/span, recovering from calibration errors, and related plumbing configurations.
Instructions for removing and replacing the air intake filters to maintain instrument performance.
Steps for replacing the silica gel beads in the purge chemical column.
Information on checking for, downloading, and installing software updates for the LI-7820.
Explains MQTT terminology and provides basic commands for terminal and Python script usage.
Details streaming data, downloading data, setting calibrations, rebooting, and powering off the instrument.
Explains the V-shaped optical cavity, laser injection, and photon circulation for gas measurement.
Details Class I laser product certification, safety warnings, and label locations.
Information on Wi-Fi capabilities, channel frequencies, and radio transmission power.
Safety precautions and proper disposal methods for lithium-ion and coin-cell batteries.
Details measurement technique, rate, flow, weight, dimensions, operating ranges, and connectivity.
Specifies response time, range, and precision for N2O concentration measurements.
Specifies range and precision for H2O concentration measurements.
Details LI-COR's warranty obligations, conditions for repair, and exclusions.
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