NDT
320 330 340 350 360 370 380 390 400
800
600
400
200
lmax=365,2nm
+D1/2=5,2nm
-D1/10=8,3nm
D1/10=20,9nm
320 330 340 350 360 370 380 390 400
according to the complete requirements of
the standards Helling has set up an air
conditioned laboratory, which includes
calibrated measurement devices,
spectrometers, a UV-A-LED, a colour
temperature source with stabilized power
supply and a cooling/heating chamber for
10 to 50°C.
In compliance with:
Rolls Royce RRES 90061
Airbus AITM6-1001
ASTM E3022-18
EN ISO 9934-3
EN ISO 3059
Irradiation μW/(cm2nm)
1004199_ATI_Helling GmbH.indd 1 22/08/2019 17:24
AEROSPACETESTINGINTERNATIONAL.COM // SHOWCASE 2020 137
not decrease more than 40% every 25cm
until an intensity of 100 MicroW/cm2 is
achieved. The operational conditions have
to be guaranteed between 10 and 50 °C. If
these temperatures are undercut or
exceeded, the LED lamp has to be
switched off automatically. In order to be
able to measure and certify UV-A-LEDs
Parameter Set value Actual value
l max. 365±5 365.2 nm
D1/2 <20 nm 9.0 nm
-D1/2 <10 nm 3.8 nm
+D1/2 <10 nm 5.2 nm
D1/10 <30 nm 20.9 nm
-D1/10 <15 nm 8.3 nm
+D1/10 <15 nm 12.6 nm
Spectral irradiation El(l) of a ZERO 500/5 AITM UV LED lamp
0
D1/2=9,0nm
-D1/2=3,8nm
Wavelength (nm)
+D1/10=12,6nm
This laboratory is not only used for the
certification with respect to the
corresponding standard of its own
production for UV-LEDs but is also offered
as a service to other interested institutions
and different UV light sources. \\
Prof. Nathanael Riess is CEO of Helling GmbH
3 // Measurement values
of the intensity spectrum of
Helling Inspector 150
3
/AEROSPACETESTINGINTERNATIONAL.COM
link
/www.helling.de