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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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Electromagnet Permanent magnet Δζzp Δζmp 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 Set-point controller PID controller Position trasducer PID Modulates voltage on electromagnet to held the suspension magnet in vertical position
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
Magnetic Suspension Balance Temperature control system • Low temperature control: • Below Room temperature • Up to 100°C Jacket
Sorption equipment Gas inlet : H2 CO N2 burner Gas chromatograph Vacuum pump 8 Thermocouple 9 Pressure transducer ( 150 bar) 10 Pressure transducer ( 1000 mbar)
Example of Sorption Isotherm • PDMS-CO2 at 35°C Kinetics of Sorption Sorption Isotherm Legend: Exp. Data Fick law
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