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Technical support Weather resistance

The table below shows the comparison data on K-20 vs K-20UVR vs K-75EUV in the accelerated weathering test.

Xenon Weather Meter / Suga Test Instrument XEL-7X-LHP model
Spectral Irradiance / 380
Exposure Time / 1000Hrs
Accumulated Spectral Irradiance / 136680KJ/m=380000
Black Panel Temperature / 63ー
Humidity / 52%RH
Light Source/Angle / D65/10ー

 

250Hrs
500Hrs
750Hrs
1000Hrs
L
a
b
E
L
a
b
E
L
a
b
E
L
a
b
E
K
-
20UVR
0.0
-0.2
0.7
0.8
-0.1
-0.7
1.6
1.7
-0.3
-0.8
3.0
3.1
-1.3
-0.8
4.3
4.6
K
-
75EUV
0.0
-0.3
0.9
1.0
-0.1
-0.7
2.0
2.1
-0.1
-0.9
3.4
3.5
-1.1
-1.0
4.9
5.1
K
-
20
-0.2
-0.5
1.5
1.5
-0.1
-0.9
2.9
3.0
-0.5
-1.1
4.5
4.6
-1.7
-1.1
6.0
6.3
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