Change log

The LI-8250 updater will install updated firmware for all components in a system.

Version 2.1.10 (current version; released November 29, 2024)

Interface firmware v1.5.19:
- Added support for the LI-7825 CO₂ Isotopes/NH₃ Trace Gas Analyzer.
- Added support for the 8250-02 Calibration Manifold.
- Interface terminology refinements and configuration options in support of the 8250-02.
Multiplexer firmware v2.1.10
- Added support for the LI-7825 CO₂ Isotopes/NH₃ Trace Gas Analyzer.
- Added support for the 8250-02 Calibration Manifold.
8250-02 Calibration Manifold firmware v1.0.1 (initial release)
Extension Manifold firmware v1.0.11 (no change)
Chamber firmware v1.1.10 (no change)

Support for version 3 printed circuit boards. Adds support for power sequencing the an internal temperature sensor. No changes to the interface or operation.

Support for an updated System-on-Module (SOM), the components of the embedded processing system. No changes to the interface or operation.

New Features

Bugs Fixed

Set limit for pre-purge to 5 seconds and post-purge for 0 seconds.
Resolved issued with manifold valve state when loading configuration page in the interface.
Improved reporting of chamber status.
Added 15 second delay after a measurement is aborted due to a flow restriction.
Improved system performance following multiplexer reboot scenarios.
Truncated significant digits after a decimal to 2 characters in the interface.
Improved communication between the LI-870 and multiplexer (changes to the LI-870 firmware).
Improved detection and display of trace gas analyzer nodes.
Improved performance of connection when a computer is reconnected to the device network after being connected to a different network.
Improved alignment of Stevens Probe SDI-12 measurements with other chamber measurements to avoid missing soil water content and temperature data.
Additional refinements.

Embedded firmware

Interface changes

Chamber changes

More gracefully handle a close limit or open limit sensor failure
Cache measurement set configuration info while SDI-12 device is performing measurement
Report -9999 for SDI-12 fields that are not reported by device due to a misconfiguration
Does a full SDI-12 measurement reinitialization on start command even if already in measurement mode