3B Scientific Magdeburg Plates User Manual

Page 6

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6

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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