3B Scientific Vacuum Experiment Plate - Manual (Page 2)

3B Scientific GmbH ▪ Rudorffweg 8 ▪ 21031 Hamburg ▪ Germany ▪ www.3bscientific.com
Technical amendments are possible
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2.2 Vacuum Bell Jar
Vacuum bell jar made of glass with grip knob
and polished flange to be set on top of the vac-
uum experiment plate
3. Technical data
Vacuum experiment plate
Diameter: 250
mm
Height: 90 mm
Current feed-through: 2-pole with 4-mm safety
sockets
Power feed: via 2 cables approx. 1 m
in length with 4-mm sa-
fety plugs
Electrical limit specs.: max. 48 V, max. 12 A
Vacuum connection:
2 hose nozzles
12 mm and 8 mm Ø
Vacuum bell jar
Inner diameter::
190 mm
Height: 220 mm
4. Operation
To perform experiments the following equipment
is also required:
1 Rotary-Vane Vacuum Pump, Two-Stage
1003317
1 Vacuum Hose 8 mm
1002619
• Before performing the experiment check for
any damage to the vacuum bell jar.
• Make sure that the sealing disc as well as
the polished edge of the bell jar are dust-
free.
• At the start of the experiment, press the
vacuum bell jar against the plate until air
pressure provides sufficient force against
the rubber seal, then let the bell jar go.
• After performing the experiment ventilate the
chamber with the pump switched off and the
evacuation valve closed.