3B SCIENTIFIC PHYSICS U14321 Instructions D'utilisation page 2

3B SCIENTIFIC® PHYSICS
Operating instructions
1/03 ALF
1
2
This apparatus is used to observe water levels in tubes
which are linked together.
1. Safety instructions
• Handle the glass vessel carefully to avoid breakage
and resulting injury.
• Avoid an exertion of mechanical loads on the ap-
paratus.
• Proceed carefully when interchanging the glass tubes.
• Be careful when using coloured water not to let it
splash on your clothes, for example
2. Description, technical data
The communicating tubes apparatus consists of a glass
cylinder in a plastic base plate. Two outlets each with a
GL screw connection are located at the bottom for the
purpose of mounting two differently shaped glass tubes
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible
U14321 Connected tubes
2
2
1
Upright vessel
2
Glass tubes
Height: Approximately 220 mm
Diameter: 25 mm
Tube diameter : 10 mm
Screw connection: GL-17
3. Procedure
• It is practical to use coloured water during the ex-
periments.
• Loosen the screw connections on the upright cylin-
der.
• Mount the two glass tubes and screw them tightly
into place.
• Fill the upright cylinder to approximately 2/3 with
water.
• Check the water level in all three vessels.
• As a demonstration, tilt the apparatus toward ei-
ther side and check the water level again in each
case.
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