Software Downloads

Here you'll find embedded and interface software for the LI-840A.

When updating, you must update both the Embedded instrument software and in the PC Interface software. The current embedded software is version 2.1. The compatible Windows software is version 2.0.1.

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LI-840A Instrument (Embedded) Software v2.1.0


Instrument (embedded) software v2.1.0 for the LI-840A CO2/H2O Gas Analyzer. See the update instructions.


LI-840A Windows Software v2.0.1


Windows software version v2.0.1 for the LI-840A CO2/H2O Gas Analyzer.