TESTO 830-T3, Инструкция по эксплуатации

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11. Information on infrared measurement 14
Apply emissivity enhancing layers such as varnish or emission
adhesive tape (Item no. 0554 0051) to the object being
measured. If this is not possible, measure with the contact
thermometer.
Emissivity table of the most important materials
(typical values)
11.3 Measurement spot, Distance
A specific spot is determined depending on the distance from the
measuring instrument to the object being measured.
Measurement optics (Ratio Distance : Measurement spot)
Material (Temperature)
ε
Heat sink, black anodised (50°C/122°F) 0.98
Copper, lightly tarnished (20°C/68°F)
0.04
Copper, oxidised (130°C/266°F) 0.76
Plastics: PE, PP, PVC (20°C/68°F) 0.94
Brass, oxidised (200°C/392°F) 0.61
Paper (20°C/68°F) 0.97
Porcelain (20°C/68°F) 0.92
Black paint, matt (80°C/176°F) 0.97
Steel,
heat-treated surface (200°C/392°F) 0.52
Steel, oxidised (200°C/392°F) 0.79
Clay, fired (70°C/158°F) 0.91
Transformer paint (70°C/158°F) 0.94
Brick, mortar, plaster (20°C/68°F) 0.93
Material (Temperature)
ε
Aluminium, bright-rolled (170°C/338°F) 0.04
Cotton (20°C/68°F)
0.77
Concrete (25°C/77°F) 0.93
Ice, smooth (0°C/32°F) 0.97
Iron, polished (20°C/68°F) 0.24
Iron with cast skin (100°C/212°F) 0.80
Iron with rolled skin (20°C/68°F) 0.77
Plaster (20°C/68°F) 0.90
Glass (90°C/194°F) 0.94
Rubber, hard (23°C/73°F) 0.94
Rubber, soft grey (23°C/73°F) 0.89
Wood (70°C/158°F) 0.94
Cork (20°C/68°F) 0.70
testo 830-T3
25 mm
500 mm
1000 mm
2000 mm
Ø792mm
Ø 390 mm Ø 190 mm
Ø 2 mm
Ø 16 mm
Laser
Laser