5
Performing the measurement
16
5
Performing the measurement
CAUTION
High thermal radiation (e.g. due to sun, fire, furnaces)
Detector may be damaged!
-
Do not point the camera at objects with temperatures > 650 °C.
Ideal framework conditions
•
Building thermography, investigating the building shell:
Considerable temperature difference between inside and outside required
(ideal: ≥
15 °C
/ ≥
27 °F).
•
Consistent weather conditions, no intensive sunlight, no precipitation, no
strong wind.
•
To ensure maximum accuracy, the camera requires an adjustment time of
10 minutes after it is switched on.
Important camera settings
•
Emissivity and reflected temperature must be set correctly in order to
precisely determine the temperature. Subsequent adjustment is possible via
the PC software, if required.
•
When auto-scaling is activated, the colour scale is continuously adjusted to
the min./max. values of the current measurement image. This means that
the colour assigned to a specific temperature is changing constantly! To be
able to compare multiple images based on the assigned colour, scaling must
be set manually to fixed values, or must be subsequently adjusted to uniform
values using the PC software.
5.1
Setting measuring functions
1
- Open the
Measurement settings
submenu.
The submenu with the measurement settings opens:
•
Pixel mark
:
o
Center spot
: the temperature measuring point in the
centre of the image is marked with white crosshairs and
the value is displayed.
o
Coldspot
,
Hotspot
: the lowest or highest temperature
measuring point is marked with blue or red crosshairs and
the value is displayed.
o
Show all
: All measuring points are displayed.
•
Differential temperature
: identifies the difference between two
temperatures.
•
IFOV
: the IFOV warner shows what can be measured
accurately from a specific distance.
