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Magnetic Suspension Balance - Layout

Electromagnet. Permanent magnet. Δζ zp. Δζ mp. Measuring load decoupling. Sensor core. Sample. Measuring-point position. Zero-point position. Magnetic Suspension Balance - Layout. Magnetic system. Magnetic Suspension Balance. Position control system. Control system.

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Magnetic Suspension Balance - Layout

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  1. Electromagnet Permanent magnet Δζzp Δζmp Measuring load decoupling Sensor core Sample Measuring-point position Zero-point position Magnetic Suspension Balance - Layout Magnetic system

  2. Magnetic Suspension Balance Position control system Control system Set-point controller PID controller Position trasducer PID Modulates voltage on electromagnet to held the suspension magnet in vertical position

  3. Magnetic Suspension Balance Temperature control system High temperature control: Up to 500 °C Set point Sample temperature Set point resistance Resistance value Cascade control Thermocouple value

  4. Magnetic Suspension Balance Temperature control system • Low temperature control: • Below Room temperature • Up to 100°C Jacket

  5. Sorption equipment Gas inlet : H2 CO N2 burner Gas chromatograph Vacuum pump 8 Thermocouple 9 Pressure transducer ( 150 bar) 10 Pressure transducer ( 1000 mbar)

  6. Example of Sorption Isotherm • PDMS-CO2 at 35°C Kinetics of Sorption Sorption Isotherm Legend: Exp. Data Fick law

  7. Other applications: Thermogravimetric analysis of polymers Study of water loss during the heating of Hyflon-Ion in hydrated state 5 Membrane fully hydrated 30°C 4 3 Weigth loss (%) molH2O/molSO3H 2 Heating 1 Evacuation at 30°C 0 Evacuation at 120°C Time (h) Temperature (°C) Legend: Desorption 30°C Heating up to 120°C

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