Using EN 410 Optical Standards File with Berkeley Lab WINDOW

Last Updated: 
Friday, September 1, 2017

Software/Versions Affected:

The prEN_410.std file that ships with Berkeley Lab WINDOW  does calculate all of the glazing system properties that can be calculated with the default optical standard (called W5_NFRC_2003.std), because these calculations are not in the EN 410 standard.

If you use the prEN_410.std file in Berkeley Lab WINDOW (set in Preferences, Optical Data tab, Standards file input):

You will see errors for the following calculation methods:

Averaging Method Color_TristimX — ASTM E308 Color calculation method

Averaging Method Color_TristimY — ASTM E308 Color calculation method

Averaging Method Color_TristimZ — ASTM E308 Color calculation method

Averaging Method TDW  — NFRC 300-2003 UV Damage Weighted Transmittance based on CIE 89/3

Averaging Method TKR — Old-style Krochmann damage weighted average

Therefore, the following results will not be calculated when using the prEN_410.std.

Color Properties Tab

Optical Data Tab

These methods are found in the W5_NFRC_2003.std file as follows:

Name : COLOR_TRISTIMX
Description : ASTM E308 Color — not in NFRC 300-2003
Source Spectrum : CIE Illuminant D65 1nm.ssp
Detector Spectrum : ASTM E308 1964 X.dsp
Wavelength Set : Color 5nm.wvl
Integration Rule : Trapezoidal (Normalized, k=1.0)
Minimum Wavelength : 0.38
Maximum Wavelength : 0.78

Name : COLOR_TRISTIMY
Description : ASTM E308 Color — not in NFRC 300-2003
Source Spectrum : CIE Illuminant D65 1nm.ssp
Detector Spectrum : ASTM E308 1964 Y.dsp
Wavelength Set : Color 5nm.wvl
Integration Rule : Trapezoidal (Normalized, k=1.0)
Minimum Wavelength : 0.38
Maximum Wavelength : 0.78

Name : COLOR_TRISTIMZ
Description : ASTM E308 Color - not in NFRC 300-2003
Source Spectrum : CIE Illuminant D65 1nm.ssp
Detector Spectrum : ASTM E308 1964 Z.dsp
Wavelength Set : Color 5nm.wvl
Integration Rule : Trapezoidal (Normalized, k=1.0)
Minimum Wavelength : 0.38
Maximum Wavelength : 0.78

Name : TDW
Description : NFRC 300-2003 UV Damage Weighted Transmittance based on CIE 89/3
Source Spectrum : ASTM E891 Table 1 Direct AM1_5.ssp
Detector Spectrum : UV Action (a=3.6, b=12.0)
Wavelength Set : Source
Integration Rule : Trapezoidal
Minimum Wavelength : 0.3
Maximum Wavelength : 0.7

Name : TKR
Description : Old-style Krochmann damage weighted average — not in NFRC 300-2003
Source Spectrum : ASTM E891 Table 1 Direct AM1_5.ssp
Detector Spectrum : Krochmann
Wavelength Set : Source
Integration Rule : Trapezoidal
Minimum Wavelength : 0.3
Maximum Wavelength : 0.5