Datasheet

Product Data Sheet 8550 VW
07/10/2017 page 7 of 9
3.4 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)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:
2.700 1/min at free air flow Frequency: 50 Hz
Optimal operating point 38,0 m3/h @ 6 Pa
Sound power level at the optimal operating
point
4,7 bel(A)
Sound pressure level at free air flow,
measured in rubber bands
30,0 dB(A)
b.) Operation condition:
3.200 1/min at free air flow Frequency: 60 Hz
Optimal operating point 45,0 m3/h @ 8 Pa
Sound power level at the optimal operating
point
5,0 bel(A)
Sound pressure level at free air flow,
measured in rubber bands
35,0 dB(A)
4 Environment
4.1 General
Min. permitted ambient temperature TU min.
-10 °C / 50 Hz
-10 °C / 60 Hz
Max. permitted ambient temperature TU max.
70 °C / 50 Hz
75 °C / 60 Hz
Min. permitted storage temperature TL min. -40 °C
Max. permitted storage temperature TL max. 80 °C
4.2 Climatic Requirements*)
Humidity requirements humid heat, constant; according to DIN EN 60068-2-
78, 14 days
Water exposure None
Dust requirements None
Salt fog requirements None
Permitted application area:
The product is intended for use in sheltered rooms with controlled temperature and controlled humidity. Directly
exposure to water must be avoided.
Pollution degree 1 (according DIN EN 60664-1)
There is either no pollution or it occurs only dry, non-conductive pollution. The pollution has no negative impact.