Datasheet

Product Data Sheet REF175-30/18/2TDA-161
02/01/2019 page 11 of 13
3.7 Sound Data
Measurement
conditions:
Sound pressure level: 1 meter distance between microphone and the air intake.
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:
4.400 1/min at free air flow U Contr. 10 V
4 Environment
4.1 General
Min. permitted ambient temperature TU min. -20 °C
Max. permitted ambient temperature TU max. 60 °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.