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The instrument is designed primarily for the dosimetry of cabin crew and flight attendants of commercial flights. A detailed description of the use is in the [user manual](https://docs.dos.ust.cz/airdos/AIRDOS04).\n\n## Design features \n\n  - Rechargeable accumulators integrated with data storage in the hot-swap module called [BATDATUNIT01](https://docs.dos.ust.cz/airdos/BATDATUNIT01)\n    - The changeable module allows new possible features in the future, like GNSS-based position logging with a revised module \n  - One month of continuous logging for a single accumulator charge\n  - Easy measurement activation by insertion of the BATDATUNIT module\n  - Data download without special software (Mass storage media)\n  - Continuously incrementing time marks (Unique logging time from every measurement) \n\n## Where to get it?\n\nPurchase AIRDOS04, the open-source device designed for versatility, from [Universal Scientific Technologies s.r.o.](https://www.ust.cz). For sales inquiries, contact sale@ust.cz. Developed and maintained by UST, it comes with full commercial availability and dedicated technical support. The device is released under the GPLv3 license.\n\n## Technical parameters\n\n  * Silicon PIN diode detector with 44 mm³ detection volume\n  * The effective number of energy channels is 886 ± 3\n  * Deposited energy ranges from 36 keV to 7 MeV\n  * Energy measurement resolution 15 ± 2 keV\n  * Service interface:  USB-C connector (charging and data download)\n  * Energy source: 18650 Li-ion cells conforms with [≤ 100 Wh / 2g restrictions](https://www.iata.org/contentassets/6fea26dd84d24b26a7a1fd5788561d6e/passenger-lithium-battery.pdf)\n  * Radiation spectra integration time 10 s\n  * Maintenance interval (data download, battery recharge)  30 days\n  * Maintenance duration under 5 minutes\n  * Approx size LxWxH 166 mm x 107 mm x 57 mm (two  of these should fit into the Aircraft printed manual bay)\n  * Weight is 0.88 kg (With five accumulator cells in [BATDATUNIT01](https://github.com/mlab-modules/BATDATUNIT01))\n  * Environmental operational conditions\n    * Device protection: IP30 rating (fully assembled)\n    * Operation temperature range: 0°C to 50°C (32°F to 122°F)\n    * Operation humidity conditions: non-condensing, 20% to 80% RH\n\n## Example data\n\n![AIRDOS04 radiation spectra measurement](doc/img/AIRDOS04_radiation_spectra.png)\n\n![AIRDOS04 flight dose rate measurement](doc/img/AIRDOS04_doserate.png)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Funiversalscientifictechnologies%2Fairdos04","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Funiversalscientifictechnologies%2Fairdos04","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Funiversalscientifictechnologies%2Fairdos04/lists"}