Help and Documentation

Welcome to the LI-6251 CO2 Analyzer help and documentation.

Manuals

LI-6251 CO2 Analyzer Instruction Manual

Instruction manual for the legacy LI-6251 CO2 Analyzer.

All Documents

Summary

Air Pumps and Accessories for LI-COR Gas Analyzers: Suggested Parts and Vendors

Suggested parts and vendors for air pumps and other accessories needed to flush the sample cells of many LI-COR closed-path gas analyzers.

application note

Internal Soda Lime/Desiccant Bottle Replacement Instructions for the LI-6251, LI-6252, and LI-6262

Instructions for replacing the internal soda lime/desiccant bottles in the LI-6251, LI-6252, and LI-6262 infrared gas analyzers.

install guide

Effects of temperature and pressure on CO2 infrared absorption with special emphasis on problems resulting from operation at high flow rates.

Article describing the effects of temperature and pressure on absorption of infrared energy by carbon dioxide.

publication

LI-6251 CO2 Analyzer Cannot Communicate Using an RS-232 Serial Port or Serial Cable

This FAQ describes how to use an external device to convert analog signals from the LI-6251 into a digital format for conversion in a computer.

tech tip

LI-6251 CO2 Analyzer with drifting problems or unable to zero or span

This FAQ describes how to zero and/or span the LI-6251 when it has drifted excessively.

tech tip

Scrubbing Chemicals in LI-COR Gas Analyzers

Note describing a change in chemical scrubbers used in gas analyzers.

technical note