LI-840 CO2/H2O Gas Analyzer Instruction Manual

Instruction manual for the LI-840 CO2/H2O Gas Analyzer.

Instructions for using the CalAdjust application

Instructions for using the CalAdjust application in older LI-820s, LI-840s, and LI-8100s. Not for new LI-820s, LI-840As, or LI-8100As.


LI-840 CO2/H2O Analyzer Instrument (Embedded) Software v1.0.15

Instrument (embedded) software v1.0.15 for the LI-840 CO2/H2O Analyzer.

LI-840 CO2/H2O Analyzer Windows Interface Software v1.0.2

Windows interface software v1.0.2 for the LI-840 CO2/H2O Analyzer.

Factory Service and Recalibration

Factory calibration is an integral step in the manufacture and repair of all LI-COR measuring instruments.

About LI-840/A Factory Calibration

To request factory service or recalibration for a LI-COR instrument, request factory service or contact your local distributor. Service will be performed at our US office in Lincoln, NE USA, European office (LI-COR GmbH), or by your local distributor.

Frequently Asked Questions

All Documents

Measuring pCO2 and Dissolved Inorganic Carbonates in Water Application note that describes how to use LI-COR analyzers in systems that measure the partial pressure of CO2 (pCO2) and dissolved organic carbonates in water. application note
Communicating with LI-COR instruments using LabVIEW Basic instructions that describe how to communicate with LI-COR instruments using LabVIEW. Includes sample programs to read data. application note
LI-820/LI-840 Gas Analyzers: installation instructions for embedded software Instructions for updating the embedded (instrument) software in the LI-820 CO2 or LI-840 CO2/H2O Analyzers. install guide
LI-840 Source/Detector Replacement Instructions Replacement instructions for the source and detector of the LI-840 CO2/H2O Gas Analyzer. install guide
Source, Detector, and Optical Path Replacement Instructions Instructions for replacing the source, detector, and optical path in the LI-800, LI-820, LI-840, and LI-8100A gas analyzers. install guide
Using the Sable Systems DG-4 to set the H2O span for LI-COR gas analyzers You can adjust the H2O span in many LI-COR gas analyzers with a dewpoint generated by the Sable Systems DG-4 Dewpoint Generator. This tech tip provides some details. tech tip
Frequently Asked Questions About Replacing LI-840 Source and Detector Frequently Asked Questions about replacing LI-840 source and detector. tech tip
Temporary Fix for a Bad Source Tech Tip describing a temporary fix for a bad optical source. tech tip