3B Scientific Magdeburg Plates - Manual (Page 6)

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• Pump out the air between the plates.
•
The force acting on the Magdeburg plates can be
determined by the equation Force = Pressure x
Area. It should be noted that some residual air
remains between the plates that acts against the
atmospheric pressure. This should be considered
when calculating the force:
Force = (Atmospheric pressure – Residual pressure)
x Area
•
Use the pressure sensor to work out the pressure
due to the residual air between the plates.
• Measure the atmospheric pressure using a barom-
eter.
•
Calculate the area in m² from the inner diameter
of the ring.
• Perform your calculations.
• Repeat the experiment using the second sealing
ring and compare the results.
Also required:
1 Data logger LabPro U44000
1 Pressure sensor U44220
1 Barometer U44300
Fig.2
A: Pressure sensor (e.g. U44220)
B: Connection to data logger (e.g. LabPro U44000)
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible
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A
B
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