Firmware upgrade

General remarks

At naneos, we are committed to continuously improving our products, including the firmware of the devices. Whenever you send an instrument back for service, we will upgrade it to the latest firmware with the latest features and bugfixes. It is also possible to upgrade the firmware in the field by our customers, and this page describes how to do it.

Note: Not all devices can be upgraded easily (sometimes an upgrade requires a hardware change or a recalibration), and therefore, you cannot simply download firmware from our webpage and upgrade. We always require you to contact us, and we need to know the serial number of your device and its current firmware version. The easiest way to provide us with all necessary information is to send us a recent data file of the instrument.

Known firmware bugs

Unfortunately, like everyone else, we sometimes produce bugs in our firmware code. The most relevant known bugs that may affect your device are:

• In the Partector 2 standard version, or the Partector 2 pro operating in standard mode, for firmware versions <422, an internal variable overflows after 248 consecutive days of operation, and particle diameter and number are no longer accurate if the setting adaptive DV is on. In the pro mode, or with adaptive DV off in standard mode, this doesn't happen.
• For both Partector 2 standard and pro, in firmware versions <346, the deposition voltage could oscillate at very high altitudes (> ~3000 masl; only with the setting adaptive DV on, and only for diameters < 25nm)
• For Partector 2 pro firmware <343, the signal is noisier than necessary at very low concentration levels (below ~1000 pt/cm³).
• For both Partector 2 standard and pro firmware versions between 270 and 314, a correction factor for low pressure was inaccurate, affecting the accuracy of diameter and number measurements. If you have such a version, you can analyze the data with our java software, which will correct for this.
• For both Partector 2 standard and pro firmware versions below 308, an internal variable overflows after 248 days of consecutive operation, leading to wrong measurements.

If any of these bugs affect your measurements (e.g. because you need to run the devices for over 248 days without restart, or want to measure at high altitudes), please contact us for an update. If you are unsure which firmware version you have, it is displayed on the screen during the instrument startup.