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Material properties
Dewar flask calorimeter
Ref :
253 081
*Noted: if the introduction of
the thermometer is difficult, to
use
a
little
Vaseline
facilitate the passage and
avoid the risks of accidental
breakage.
ENGLISH
1 Description
The calorimeter is made up of a double-walled glass flask bright dipped in
vacuum, covered with a plastic outer cover, an internal plastic vessel and a
closing cover.
The calorimeter's cover consists of the following elements:
•
1 guided non-removable plastic stirrer, with a rectangular cross-
section
•
1 ∅ 11 mm port for a thermometer or a probe
•
1 ∅ 6 mm guide for an expansion thermometer or a temperature
probe
•
1 central circular opening that can be plugged by a cover to insert
resistances
•
Two 2 and 4 Ω resistances connected in series on sheathed
aluminium rods, connected to an insulating cover with ∅ 4mm safety
plugs.
To make temperature measurements, the calorimeter can be used with :
•
to
A fairly long glass expansion thermometer*
•
A temperature probe with a diameter less than 7 mm, such as the
®
Initio
Thermometer part no. 251 040 or the Initio
Thermometer with analog output part no. 251 045 (a retaining clip
for the temperature probe is provided for these 2 devices).
2 Technical characteristics
•
Effective volume:
•
Internal dimensions of the vessel:
•
External dimensions:
•
Heat capacity:
(with protective vessel)
•
Power supply:
Caution!! The resistances must always be submerged when they are powered
on.
950 ml
∅ = 85 mm x 180 mm
∅ = 130 mm x 270 mm
negligible, < 30 J/C°
12 V max DC
6
®
SA
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