LI-COR LI-820 - Page 8

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Section 4. Theory of Operation
System Overview................................................................................................................................................................................. 4-1
Optical Bench System ......................................................................................................................................................................... 4-2
Equation Summary .............................................................................................................................................................................. 4-5
Measuring CO
2
Absorptance ....................................................................................................................................................... 4-5
Computing CO
2
Mole Fraction ........................................................................................................................................................... 4-9
Zeroing (Set Z)..................................................................................................................................................................................... 4-11
Single Point Scanning (Set S
o
)............................................................................................................................................................ 4-12
Two Point Scanning (Set S
o
and S
1
) ................................................................................................................................................... 4-13
Section 5. Maintenance
Cleaning the Optical Bench ................................................................................................................................................................ 5-1
Changing the Fuse ............................................................................................................................................................................... 5-5
Storing the LI-820................................................................................................................................................................................ 5-5
Appendix A. Specifications
Appendix B. Pin Assignments
Appendix C. List of Suppliers
Appendix D. Configuration Grammar
Warranty