 |
Infrared
Emissivity |
 |
发射率指导表
了解目标的发射率，或者它的"辐射"特性，这是红外测量的关键构成。简单地说，发射率就是一个表面或者黑体发出的辐射的比率，它的辐射理论由普朗克的定律预测。[W(L,T)=C1/(L^5*(exp(C2/LT)-1))。当直接观察一种材料表面的发射率就是表面大量的能源的测量。有很多因素影响具体目标的发射率，例如波长，视野，黑体的几何形状，以及温度。然而，对于红外测温仪使用者的目的和应用来说，更希望得到一张全面反映发射率在各种各样的物体表面和目标上的相应温度的表。有关发射率更详细的技术说明，请直接与ZyTemp联系。
|
 |
 |
Material
(Non Metal) |
|
|
 |
 |
 |
 |
 |
|
Material(Non-Metals) |
Temp degF(degC) |
Emissivity |
|
Adobe
|
68 (20)
|
0.9
|
|
Asbestos
|
|
|
Board
|
100 (38)
|
0.96
|
|
|
Cement
|
32-392 (0-200)
|
0.96
|
|
|
Cement, Red
|
2500 (1371)
|
0.67
|
|
|
Cement, White
|
2500 (1371)
|
0.65
|
|
|
Cloth
|
199 (93)
|
0.9
|
|
|
Paper
|
100-700 (38-371)
|
0.93
|
|
|
Slate
|
68 (20)
|
0.97
|
|
|
Asphalt, pavement
|
100 (38)
|
0.93
|
|
|
Asphalt, tar paper
|
68 (20)
|
0.93
|
|
Basalt
|
68 (20)
|
0.72
|
|
Brick
|
|
|
Red, rough
|
70 (21)
|
0.93
|
|
|
Gault Cream
|
2500-5000 (1371-2760)
|
.26-.30
|
|
|
Fire Clay
|
2500 (1371)
|
0.75
|
|
|
Light Buff
|
1000 (538)
|
0.8
|
|
|
Lime Clay
|
2500 (1371)
|
0.43
|
|
|
Fire Brick
|
1832 (1000)
|
.75-.80
|
|
|
Magnesite, Refractory
|
1832 (1000)
|
0.38
|
|
|
Grey Brick
|
2012 (1100)
|
0.75
|
|
|
Silica, Glazed
|
2000 (1093)
|
0.88
|
|
|
Silica, Unglazed
|
2000 (1093)
|
0.8
|
|
|
Sandlime
|
2500-5000 (1371-2760)
|
.59-.63
|
|
Carborundum
|
1850 (1010)
|
0.92
|
|
Ceramic
|
|
|
Alumina on Inconel
|
800-2000 (427-1093)
|
.69-.45
|
|
|
Earthenware, Glazed
|
70 (21)
|
0.9
|
|
|
Earthenware, Matte
|
70 (21)
|
0.93
|
|
|
Greens No. 5210-2C
|
200-750 (93-399)
|
.89-.82
|
|
|
Coating No. C20A
|
200-750 (93-399)
|
.73-.67
|
|
|
Porcelain
|
72 (22)
|
0.92
|
|
|
White Al2O3
|
200 (93)
|
0.9
|
|
|
Zirconia on Inconel
|
800-2000 (427-1093)
|
.62-.45
|
|
Clay
|
68 (20)
|
0.39
|
|
|
Fired
|
158 (70)
|
0.91
|
|
|
Shale
|
68 (20)
|
0.69
|
|
|
Tiles, Light Red
|
2500-5000 (1371-2760)
|
.32-.34
|
|
|
Tiles, Red
|
2500-5000 (1371-2760)
|
.40-.51
|
|
|
Tiles,Dark Purple
|
2500-5000 (1371-2760)
|
0.78
|
|
Concrete
|
|
|
Rough
|
32-2000 (0-1093)
|
0.94
|
|
|
Tiles, Natural
|
2500-5000 (1371-2760)
|
.63-.62
|
|
|
Brown
|
2500-5000 (1371-2760)
|
.87-.83
|
|
|
Black
|
2500-5000 (1371-2760)
|
.94-.91
|
|
Cotton Cloth
|
68 (20)
|
0.77
|
|
Dolomite Lime
|
68 (20)
|
0.41
|
|
Emery Corundum
|
176 (80)
|
0.86
|
|
Glass
|
|
|
Convex D
|
212 (100)
|
0.8
|
|
|
Convex D
|
600 (316)
|
0.8
|
|
|
Convex D
|
| |
