Datasheet

Product Data Sheet REF100-11/14/2U
02/01/2019 page 8 of 10
3.5 Sound Data
Measurement
conditions:
Sound pressure level: 1 meter distance between microphone and the air intake.
Sound power level: Acc. to DIN 45635 part 38 (ISO 10302)
Measured in a semianchoic chamber with a background noise level of Lp(A) < 5 dB(A)
For further measurement conditions see chapter aerodynamics.
a.) Operation condition:
5.400 1/min at free air flow
Optimal operating point 44,0 m3/h @ 164 Pa
Sound power level at the optimal operating
point
6,3 bel(A)
Sound pressure level at free air flow,
measured in rubber bands
4 Environment
4.1 General
Min. permitted ambient temperature TU min. -20 °C
Max. permitted ambient temperature TU max. 75 °C
Min. permitted storage temperature TL min. -40 °C
Max. permitted storage temperature TL max. 80 °C
4.2 Climatic Requirements
Humidity requirements humid temperature, cyclic; according to DIN EN 60068-2-38, 10
cycle and condensation water check; according to DIN EN ISO
6270-2, 14 days
Water exposure Splash water check IPX4; according to DIN EN 60529 VDE 0470,
not certified
Dust requirements Dust check IP5X; according to DIN EN 60529 VDE 0470, not
certified
Salt fog requirements None
Permitted application area:
The product is for the use in partial sheltered rooms or open, roofed areas. Direct exposure to water is allowed
provided that this does not prevent the normal operation. Saline ambient conditions must be avoided.
Pollution degree 3 (according DIN EN 60664-1)
It occurs conductive pollution or dry non-conductive pollution which becomes conductive due to condensation.
Please require severity levels and specification parameters from the responsible development departments.