3B Scientific Pressure Balance - Manual (Page 3)

3
The pressure balance is for experiments that clearly illus-
trate key concepts of force and pressure
.
1 ..... Safety instructions
• Risk of injury! The plungers and cylinders of the
pressure balance are made of glass
. If the glass breaks
the shards can cause cuts . Glass components should
be checked to make sure they are in a safe condition
before performing any experiment
. The plastic buff-
ers inside the two glass syringes prevent the plungers
colliding heavily with the glass and may not be re-
moved
.
• The tray
1 on the large plunger may not be loaded
with more than 500 g and that of the smaller cylinder
can take a maximum of 200 g
.
• Risk of flying components! The small plunger
9 is
fastened by a safety cord bl to prevent it flying out
of the cylinder . You should check to see that the safety
cord is tightly fastened
.
• Appropriate usage: The pressure balance should only
be used for demonstration or student experiments
that are supervised by a teacher
.
1 Tray
2 Carrier plate
3 Large cylinder
4 Stand rod
5 Base plate
6 Rod for weights
7 Air inlet
8 Connecting hose
9 Small cylinder
bl Safety cord
bm Weights
6
9
bm
4 8
5
7
2
bl
3
1
3B SCIENTIFIC® PHYSICS
U10355 Pressure balance
Instruction sheet
07/05 MH