Data Sheet

Product Data Sheet 4412/2HHP
01/30/2019 page 8 of 10
3.6 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:
5.000 1/min at free air
flow
PWM 100 %;
Optimal operating point
170,0 m3/h @ 81 Pa
Sound power level at the optimal operating
point
6,4 bel(A)
Sound pressure level at free air flow,
measured in rubber bands
55,0 dB(A)
4 Environment
4.1 General
Min. permitted ambient temperature TU min.
-20 °C
Max. permitted ambient temperature TU max.
70 °C
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.
Please require severity levels and specification parameters from the responsible development departments.