eGauge Systems LLC (eGauge) has determined that devices with serial numbers of the form:
as shipped may not be able to operate over the full temperature range (-30 to 70 degrees celsius, -22 to 158 F). In particular, if these devices operate at an internal temperature significantly over 50 degrees celsius (as reported by the Device Status page), they are likely to experience corruptions that can lead to the device becoming inoperable or unable to record any new data.
eGauge has developed a firmware fix for this issue that fully restores the affected devices to being able to operate over the entire temperature range. eGauge therefore recommends upgrading affected devices to firmware version 2.16.4 at the earliest convenience. It is recommend to perform the firmware upgrade when the internal device temperature is below 55 C (as reported on the device status page) and to reboot/power-cycle the device first to confirm that it's still working fine. To protect the integrity of already deployed devices, eGauge will proactively upgrade the firmware on affected devices that are accessible via the Internet.
Where to find the serial number of a device:
- Label on the bottom of the device.
- Device Status page (View -> Device Status).
- Certificate of Calibration.
- Installation information sheet from the device sleeve.
If you can't locate the serial number of a device, please feel free to contact firstname.lastname@example.org and provide the device name (for example, "eGauge123456").