Check the match of absorptance of the covered HFT with that of the surrounding area
by comparing the image or radiometer output of each area after a stabilization time of
at least 15 min.
10.3 Mounting the THERM Temperature sensors
10.3.1 Permanent Installation
Flush mount temperature transducers by burying them at the same depth that the sensor
is thick. Use the same paint, or in the case of a natural finish, such as brick or wood, a
powder of that finish material made into a paste and glued around the sensor.
Recommendations for the measurement location
It is recommended to pay attention to the following aspects of the measurement.
Location with exposure to direct solar radiation should be avoided as much as
possible. In the northern hemisphere, north-facing walls are preferred.
Typically, locations exposed to solar radiation are avoided, in particular when
thermal resistance or H-value measurements of a building component are made.
When installing on a wall surface with exposure to strong radiation (for instance,
direct beam solar radiation), the spectral properties of the sensor surface must be
adapted to match those of the wall. This can be done by covering the sensor with
paint or sheet material of the same colour.
For detailed analysis of one building element it can be beneficial to install one heat
flux sensor on one side, and the other on the other side. Measuring in such a way will
allow seeing the thermal response time of a system in more detail.
The location of installation preferably should be a large wall section which is
relatively homogeneous. Areas with local thermal bridges should be avoided.
Whatever the exact setup, the duration of the measurement should be at least 72
hours.
Enabling better research outcomes in soil, plant & environmental monitoring.
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