Example 3: Calculation Of The Temperature Coefficient - Anton Paar DMA 35N Betriebsanleitung

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
EN