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General| Gas Analyzers | CO2 and H2O |
|---|---|
| Measurement Principle | Non-dispersive infrared (NDIR) |
| Operating Temperature Range | 0-45 °C |
| Outputs | Analog (0-2.5 V), RS-232 |
| Type | Portable |
| Light Source | Infrared |
| Gas Exchange Measurement | Yes |
| Display | LCD |
| Power Supply | External |
Check received items upon delivery.
Key capabilities and design aspects of the LI-840A.
Important safety and handling advice for the LI-840A.
Basic steps for setting up the LI-840A.
Details high/low alarm configurations and settings.
Install software, connect, set parameters, cabling.
Settings Window, Heater, Pressure Comp, Filter, DAC Output.
Charting Window, Logging Data, Diagnostic Window.
Zero/Span, Two Point Span, Coefficients, Advanced Page.
Connect analyzer to datalogger for data collection.
Explains the NDIR principle.
Details optical bench components and function.
Step-by-step guide for cleaning.
Instructions for locating and replacing the fuse.
Info on replacing infrared source and recalibration.
Guidelines for proper storage to maintain performance.
Mathematical equations for H2O measurement.
Mathematical equations for CO2 measurement.
Lists suppliers for zero gas generation chemicals.
Lists suppliers for Ascarite II.
Lists suppliers for electronic relay switches.
Explains the XML grammar for instrument communication.
Details XML commands for performing zero and span calibrations.
Reference for XML tags and their usage.
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