Product Data Sheet 8312 HL-156
11/05/2014 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 section 3.5
a.) Operation condition:
4.200 1/min at free air flow
Optimal operating point 53,0 m3/h @ 25 Pa
Sound power level at the optimal operating
point
5,8 bel(A)
Sound pressure level at free air flow,
measured in rubber bands
43,0 dB(A)
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 heat, constant; according to DIN EN 60068-2-
78, 14 days
Water exposure None
Dust requirements None
Salt fog requirements None
*) Permittet 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
