Appendix
31
Hydromette BL Compact TF-IR
Material
Condition
Temperature*
EM factor
Rubber
Dark
95
Bright
86
Hard
88-95
Soft
67-84
Casting**
Cast iron
94
Cast iron,
polished
21
Skin
38
98
Wood
80-90
Lime
30-40
Lime mortar
93
Copper**
Highly polished
7
Heavily oxidised
78
Marble
93
Brickwork
95
Brass**
Polished
5
Oxidised
60
Nickel**
Polished
5
Oxidised
32
Porcelain
93
Plaster
Lime plaster
92
Sand
90
Snow
-10
85
Smooth
95
Bolts**
85
Silver**
3
Steel**
Oxidised
80
Rolled
24
Tar
83
Water
96
Brick
Clay brick
93
Tin**
5
*(No value given in the "Temperature" field indicates, that the values shown
are valid for a nominal temperature of 20 °C.)
**(Because of their surface, metals cannot be measured precisely (e.g.:
oxidised/polished surface
EM factor between 2 and 100%). We therefore
recommend using the paper label (IR 30/E95
item no. 5833
) showing a
factor of 95%. This label provides for exact object temperature
measurements.