Calibration History: Farmer 1572 + Unidos 10396
| Date | NW | U | ppol (60Co) | ps (60Co) | NW' [Gy/C] | Laboratory |
|---|---|---|---|---|---|---|
| 27.04.2012 | 1.015 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 15.04.2014 | 1.018 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 25.04.2016 | 1.013 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 21.06.2018 | 1.013 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 14.09.2020 | 1.011 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 21.06.2022 | 1.014 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 19.06.2024 | 1.013 | 0.014 | 5.315E+07 | Seibersdorf |
Calibration History: Farmer 1572 + Unidoswebline 11
| Date | NW | U | ppol (60Co) | ps (60Co) | NW' [Gy/C] | Laboratory |
|---|---|---|---|---|---|---|
| 20.04.2006 | 1.014 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 13.06.2008 | 1.013 | 0.014 | 5.315E+07 | Seibersdorf | ||
| 06.09.2010 | 1.014 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 27.04.2012 | 1.013 | 0.014 | 0.999 | 1.000 | 5.315E+07 | Seibersdorf |
| 15.04.2014 | 1.016 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 25.04.2016 | 1.013 | 0.014 | 1.001 | 1.000 | 5.315E+07 | Seibersdorf |
| 21.06.2018 | 1.013 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 14.09.2020 | 1.012 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 21.06.2022 | 1.014 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 19.06.2024 | 1.014 | 0.014 | 1.000 | 1.000 | 5.315E+07 | Seibersdorf |
| 18.06.2026 | 1.014 | 0.014 | 5.315E+07 | Seibersdorf |
Calibration History: Farmer 1582 + Unidos 10398
| Date | NW | U | ppol (60Co) | ps (60Co) | NW' [Gy/C] | Laboratory |
|---|---|---|---|---|---|---|
| 20.11.2009 | 1.012 | 0.014 | 1.000 | 1.000 | 5.381E+07 | Seibersdorf |
| 27.06.2011 | 1.015 | 0.014 | 1.001 | 1.000 | 5.315E+07 | Seibersdorf |
| 16.04.2013 | 1.016 | 0.014 | 1.000 | 1.000 | 5.381E+07 | Seibersdorf |
| 30.06.2015 | 1.011 | 0.014 | 0.999 | 1.000 | 5.381E+07 | Seibersdorf |
| 13.06.2017 | 1.016 | 0.014 | 1.001 | 1.000 | 5.381E+07 | Seibersdorf |
| 19.11.2019 | 1.015 | 0.014 | 1.001 | 1.000 | 5.381E+07 | Seibersdorf |
| 22.06.2021 | 1.015 | 0.014 | 1.001 | 1.000 | 5.381E+07 | Seibersdorf |
| 19.06.2023 | 1.015 | 0.014 | 1.001 | 1.000 | 5.381E+07 | Seibersdorf |
| 18.06.2025 | 1.016 | 0.014 | 1.001 | 1.000 | 5.381E+07 | Seibersdorf |
Note: U = k uc is the expanded uncertainty with the coverage factor k = 2.
Logbook
| Date | Event |
|---|---|
| 10.06.2005 | S/N 1572 initial calibration by PTW: NW = 5.315E+07 Gy/C (U = 2.2%). |
| 10.06.2005 | S/N 1582 initial calibration by PTW: NW = 5.381E+07 Gy/C (U = 2.2%). |
| 2026 | Due to increasing costs for verification and calibration, we phased out Unidos 10396 in 2026. For the remaining electrometer/chamber combinations in use, we stopped ordering the correction factors ppol (60Co) and ps (60Co). These factors are very stable (see tables). |