Material (material temperature)
Plastics: PE, PP, PVC
Paint, blue on aluminum foil
Paint, black, matt
Paint, yellow, 2 coats on aluminum foil
Paint, white
Marble, white
Masonry
Brass, oxidized
Oil-based paints (all colors)
Paper
Porcelain
Sandstone
Steel, heat-treated surface
Steel, oxidized
Steel, cold-rolled
Clay, fired
Transformer paint
Brick, mortar, plaster
Zinc, oxidized
6.4
Notes on the measuring conditions
▶ Highly reflective or shiny surfaces (e.g. shiny tiles or bright metals) can badly falsify or impair the
displayed results. If necessary, mask the surface to be measured with a dark, matt and thermally
conductive adhesive tape. Wait briefly to allow the adhesive tape to adjust to the temperature to the
surface.
▶ When surfaces are reflective, be sure to use an appropriate measuring angle so that reflected thermal
radiation from other objects does not falsify the result. For example when measuring perpendicular to
the surface from in front, the reflection of your own body heat can impair measurement. If the surface is
smooth the outlines and temperature of your body (reflected value) that do not correspond to the actual
temperature of the measured surface (emitted value or real value of the surface) might be displayed.
▶ On account of the principle employed, measurement through transparent materials (e.g. glass or
transparent plastics) is not possible.
▶ The better and more stable the measuring conditions, the more accurate and reliable the measured
results will be. Not only strong temperature fluctuations of the ambient conditions but also strong
fluctuations in the temperatures of the measured object can impair accuracy.
▶ Infrared temperature measurement is impaired by smoke or vapor in the air, high air humidity or dusty
air.
•
Approach as close as possible to the object to be measured, in order to minimize interference factors
between you and the surface to be measured.
•
Ventilate enclosed spaces before taking measurements, particularly if the air is dirty or very vapor-laden.
After ventilating, wait until the temperature inside the room has returned to normal.
6.5
Size of area scanned
The distance between object to be measured and measuring tool influences the size of the area scanned per
pixel. The greater the distance from the object, the larger the objects you can scan.
Guide values
Distance
0.3 m
0.55 m
1 m
2 m
*2356162*
Material temperature
20 ℃
40 ℃
80 ℃
40 ℃
90 ℃
40 ℃
40 ℃
200 ℃
90 ℃
20 ℃
20 ℃
40 ℃
200 ℃
200 ℃
93 ℃
70 ℃
70 ℃
20 ℃
•/•
Size, infrared pixel
1 mm
2 mm
3 mm
6 mm
2356162
Emissivity ε
0.94
0.78
0.97
0.79
0.95
0.95
0.93
0.61
0.92 - 0.96
0.97
0.92
0.67
0.52
0.79
0.75 - 0.85
0.91
0.94
0.93
0.1
Infrared area width x height
0.22 m x 0.16 m
0.40 m x 0.29 m
0.73 m x 0.54 m
1.46 m x 1.07 m
English
35