What is the heating or cooling load
for a house or the cooling requirement for an automobile or aircraft
engine?
In order to answer these questions, the thermophysical properties of
the materials must be known over the temperature range of interest.
One of the most important of these properties is the thermal diffusivity,
which can be measured with the NETZSCH LFA 427 over the temperature
range of -40 to 2000°C.
The thermal diffusivity values can be converted to thermal conductivity
using the specific heat and bulk density. A high degree of reproducibility
and accuracy, along with fast measurement times, simple sample geometries
and small sample sizes, are some of the advantages of thermal diffusivity
measurements over the so-called direct thermal conductivity measurement
methods. The fact that materials with thermal diffusivity values ranging
from 0.001 to 10 cm2/s can be accurately measured is an additional
advantage.
The completely enclosed system, with its space-saving design, meets
the highest safety req uirements (class 1) and can be operated with
no special safety precautions. The advanced software allows the instrument
to be operated in the manual or fully-automatic mode. Additional holders
are available for the measurement of powder, liquid, slag, fiber and
sandwich samples.
NETZSCH offers
precision thermal analysis instruments including advanced dilatometers (with
a new basic R&D/QC dilatometer),
classical DSC & TGA (with
a new economical DSC), high temperature DSC
to 1650°C for specific heat, very high temperature STA
(TGA-DSC/DTA) to 2400°C (featuring the new STA
409-PC Luxx®), thermal
/ evolved gas analysis with fully-integrated FTIR & MS, plus
high resolution TMA and DMA.
We also feature leading technology for thermal conductivity and diffusivity measurement
as well as refractories testing including HMOR, CIC, and RUL.
Temperature
range:
-70°C to 2000°C