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7.3.3 Example 3: Calculation of the Temperature Coefficient
•
Set the DMA 35
•
Fill the sample at temperature 1.
•
Immediately after filling, read the density and temperature from the display and
note down the values as ρ
•
Fill the sample at temperature 2.
•
Immediately after filling, read the density and temperature from the display and
note down the values as ρ
•
Calculate the coefficient using the following formula:
Temperature coefficient
•
To set the temperature coefficient in the DMA 35
calculation, e.g. 3·10
B46IB01
to g/cm
(°C).
3
N
Information:
Choose a temperature lower than the typical measuring
temperature (e.g. 28 °C). Cool down the sample and fill it.
and t
, e.g. 0.9968 at 22.9 °C.
1
1
Information:
Choose a temperature higher than the typical measuring
temperature. Warm up the sample and fill it.
and t
, e.g. 0.9932 at 34.8 °C.
2
2
ρ
–
1
=
----------------- -
t
–
1
g·cm
·K
.
-4
-3
-1
ρ
0.9968 0.9932
–
2
=
----------------------------------------- -
t
22.9 34.8
–
2
, use the result of the
N
-4
×
=
3.02
10
25
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