3B Scientific Pascal's Vane Apparatus - Manual

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3B SCIENTIFIC 3B SCIENTIFIC 3B SCIENTIFIC 3B SCIENTIFIC 3B SCIENTIFIC® PHYSICS PHYSICS PHYSICS PHYSICS PHYSICS
Instruction sheet
08/05 ALF
Pascal’s vane apparatus U15070
1 Level indicator
2 Scale
3 Double-arm lever and scale
4 Slotted weight
5 Piston for transmitting
forces
6 Rubber diaphragm
7 Sealing rings
8 Acrylic tube
9 Locking screws for tube
nozzle
bl Outlet pipe at rear
bm Glass vessels
2 3 4
1
5
6
7
8
9
bl
bm
Pascal’s vane apparatus is used for demonstrating the
hydrostatic paradox and for quantitative measurements
of pressure at the bottom of a fluid column as a function
of its height.
1. Safety instructions
•
Insert the glass vessels with care.
•
Do not expose the glass vessels to any mechanical
stress. They could break.
•
Only use liquids that will not corrode the rubber dia-
phragm and sealing rings. Coloured water is recom-
mended.
2. Description, technical data
Pascal’s vane apparatus consists of a metal base plate,
on the right-hand side of which is mounted a bracket for
an acrylic plastic tube
8 with sealing rings 7 and a
rubber diaphragm 6 for supporting various glass ves-
sels bm . The liquid in the glass vessels exerts a force on
the rubber diaphragm. The force is transmitted from the
diaphragm to the short arm of the lever
3 via a piston
5 . The lever action means that the displacement due to
the force can be seen enlarged at the end of the long
arm. This displacement is indicated on a large scale and
acts as a measure of the force. The height of the scale can
be adjusted. By moving a slotted weight
4 along the
. . . g o i n g o n e s t e p f u r t h e r
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