Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample...
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![Page 1: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/1.jpg)
Magnetic Suspension Balance - Layout
Magneticsystem
Δζzp
Measuringload
decoupling
Sample
Zero-point position
Δζmp
Measuring-point position
Sensor core
Electromagnet
Permanent magnet
![Page 2: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/2.jpg)
Magnetic Suspension Balance
Position trasducer
PID controller
Set-point controller
Control system
PID Modulates voltage on electromagnet to held the suspension magnet in vertical position
Position control system
![Page 3: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/3.jpg)
Magnetic Suspension Balance
Cascade control
Set point Sample temperatureSet point resistance
Thermocouple value
Resistance value
Temperature control system
High temperature control:
Up to 500 °C
![Page 4: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/4.jpg)
Magnetic Suspension Balance Temperature control system
Low temperature control:
Below Room temperatureUp to 100°C
Jacket
![Page 5: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/5.jpg)
Sorption equipmentSorption equipment
Vacuum pump
burner
Gas chromatograph
8 Thermocouple
9 Pressure transducer ( 150 bar)
10 Pressure transducer ( 1000 mbar)
Gas inlet :
H2
CO
N2
![Page 6: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/6.jpg)
Example of Sorption IsothermExample of Sorption Isotherm
2.34 bar
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0 5 10 15 20 25 30 35 40 45 50
t 0̂.5 (s 0̂.5)
[M(t)
-M(0
)]/[M
(inf)-
M(0
)]
Step 2
PDMS-CO2 at 35°C
Legend:
Exp. Data
Fick law
Kinetics of Sorption
Sorption Isotherm
0
0.002
0.004
0.006
0.008
0.01
0.012
0.014
0.016
0.018
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70
Pressure (Mpa)
Sol
ubilit
y (g
/g_p
ol)
Rubotherm Data (I)
Grazia's data
Rubotherm Data (II)
![Page 7: Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample Zero-point position Δζ mp Measuring-point position Sensor core.](https://reader036.fdocuments.net/reader036/viewer/2022062421/56649ca45503460f94964ed4/html5/thumbnails/7.jpg)
Other applications: Thermogravimetric analysis of polymers Other applications: Thermogravimetric analysis of polymers
Desorption 30°CHeating up to 120°C
Legend:
Study of water loss duringthe heating of Hyflon-Ion in hydrated state
88
90
92
94
96
98
100
0 20 40 60 80 100 120
1.2 %
0.9 %
m
olH
2O/m
olS
O3H
Wei
gth
loss
(%
)
Time (h) Temperature (°C)
Membrane fully hydrated 30°C
Evacuation at 30°C
Heating
Evacuation at 120°C
0
1
2
3
4
5