Software

The LI-840A is configured with a Windows^® software application, which is provided with the instrument.

LI-840A software features include:

• Scalable, linear Digital to Analog Converters (DACs). You can scale the LI-840A outputs for increased flexibility and resolution.
• Wide calibration of 0-20,000 ppm CO₂ and 0-60 ppt H₂O.

The configuration software is used for configuration, control, data collection, and graphical data display. Your choice of parameters (CO₂, H₂O, cell pressure, or cell temperature) can be output via linear voltage or current outputs. In addition, 0-5V alarm outputs can be connected to audible alarms, relay switches, automatic dialers, pumps, or valves in industrial applications. The LI-840A is connected to a computer with the RS-232 DB9 serial cable connection.

For complete integration of the LI-840A into other equipment controls for OEM applications, the instrument also features a communication protocol based on the extensible Markup Language (XML). XML is a simple text-based language that allows you to communicate with the LI-840A using simple text strings sent bi-directionally between your computer and the instrument over the RS-232 port. Using XML, the LI-840A can be polled for data at user-defined intervals, configured from remote locations, or set up to perform automatic calibration routines, for example.

Contact LI-COR if you use an LI-840 and would like to upgrade to an LI-840A.

LI-840A Software Downloads

Future upgrades of all LI-840A software will be available through this page.

The LI-840A software consists of instrument (embedded) and Windows® Interface Software. To avoid a configuration error upon initial connection, update both embedded (instrument) and Windows interface software.

NOTE: The LI-840 has been replaced with the LI-840A. The LI-840A Windows Interface and embedded instrument software are required for use with the LI-840A. Contact LI-COR if you would like to upgrade an existing LI-840 to an LI-840A.

LI-840A Windows^® Interface Software: