1. MUPUS Team Meeting, Graz, 24-25 Oct-2013 A. Schaffer, G. Kargl, N. Kömle Space Research Institute Austrian Academy of Sciences Calibration strategy for the PEN Flight Spare

2. Infrared images  VarioCam HR research 600  Resolution: 640x480 IR-pixel  Accuracy: ± 0.8°C  Distance to probe: 1.5m  Env. temp.: 24 to 25°C  Rel. humidity: 55 – 60%  Trigger interval: 30sec  Captured: approx. 1200 images Attenuation coeff.: 0.85 (VarioCam)

3. Infrared images Sensor 12 Powerlevel 30All sensors Powerlevel 30 Time

4. Infrared images Max. T and IR-pic Sensor 10  Example: Sensor 10 max. temperature graph and corresponding IR-picture  „Thermal middle“ or „Hot spot“ – region determined for each sensor

5.  Usefull for:  model purposes  layer detection  graphical representation Conclusion Infrared images

6. Heat sink

7.  Aluminium  Dim.: 425 x 60mm  Cooperation MFL Liezen  Cut with water jet  Copper cooling tubes Heat sink

10. Assembled condition

11. Measurement setup NEW calibration file Thermal control Refrigeration bath circulator Huber CC-902 Heat sink Agilent data acquisition 6x PT100 class A 4x PT100 class B Vaccum chamber High performance rotary vane pump DUO 20 M Small yet turbopump HiPace@ 80 Operation range: 10E-6 mbar EXTASE system SON10#MP02 EXTASE data logger

12. Measurement setup

15.  Planned temperature profile, can be programmed in CC-902  Constant temperature level kept for 1h, except 0°C for 2h  Av. change of temperature in ramps : ±0.35 K/min ±0.02 K/min

16. Measured data  First measurement series  Date: 10.10.2013 to 11.10.2013  Range: +30°C to -50°C in 3 stages (CC-902 limitations)  Chamber pressure: air pressure (≈1013 mbar)  no heating of the probe  REFPT100: mean of HSE1 to 5 (ΔT ≅ 0.6°C @0°C)

17. Calibration approach Mathematical background

18. Measured data

19. Sensor 5: R 0 = 73.74 Ω

20. Measured data

24. Comparison of OLD and NEW EXTASE calibration data

25. Measured data

28.  Second measurement series - VACCUM conditions  Date: 15.10.2013 to 16.10.2013  Range: +30°C to -50°C in 3 stages (CC-902 limitations)  Chamber pressure: High vaccum: 2.6e-6mbar to 7.0e-6mbar  No heating of the probe  REFPT100: mean of HSE1 to 5 (ΔT ≅ 0.6°C @0°C)

29. Measured data

32. VACUUM - Comparison of OLD and NEW EXTASE data

33. Measured data

36.  Unique calibration file for vacuum conditions  Correction factor for sensors 1 to 3  Conductivity test measurements (air pressure and HV)  Temperature gradient measurement to get information about the conductivity of the probe  Heating in high vacuum with no sample  Measurements at temperatures below -50°C  Softwareupgrade for CC-902 Outlook and conclusion Measured data