1

Introduction to the LI-7820

What's what

Optional accessories

2

Getting started

Powering on the instrument

Power options

Connecting with the instrument

Enabling and disabling Wi-Fi

Instrument display

Status codes

Powering off the instrument

Storing the instrument

Storing lithium-ion batteries

Shipping the instrument

3

Applications of the LI-7820

Flow schematic

Soil gas flux measurements

Connecting the air inlet and outlet

Plumbing a subsample

Configuration options

Installing the reduced flow rate kit

Retrieving data from the instrument

Installing the instrument in a rack mount

4

Software overview

Home page

Settings

Calibration

Diagnostics

Layouts

Thresholds

Export

5

Troubleshooting

Connection problems

Measurement problems

Interface issues

Status and warning messages

6

Maintenance

Instrument calibration

Replacing the air inlet filter

Replacing the purge dry-down chemical

Software updates

7

Communication with the MQTT protocol

A

Measurement overview

B

Additional safety information

C

Specifications