Software Downloads

Here you'll find instrument and interface software for the LI-820.

Thanks for your request

Contact us at if you are unable to complete your request.

We are unable to display the form due to your browser privacy settings. Please fill out the form here.

If you need further assistance contact

When updating, you must update both the Embedded instrument software and in the PC Interface software. The current embedded software is version 2.0.2. The compatible Windows software is version 2.0.0.


LI-820 CO2 Analyzer Instrument (Embedded) Software v2.0.2


LI-820 Instrument (Embedded) Software. See the update instructions.

LI-820 CO2 Analyzer Instrument (Embedded) Software v1.0.6


For use with earlier LI-820 instruments that use interchangeable optical cells (14 cm standard and 5 cm short).


LI-820 CO2 Analyzer Windows Interface Software v2.0.0


LI-820 Windows interface software for use with Windows-based PCs.

LI-820 CO2 Analyzer Instrument (Embedded) Software v1.0.0


Early version of the Windows Interface Software. Use when running LI-820 Instrument (Embedded) Software V1.0.6.