Coefficient Of Local Pressure Loss - Mandik FDMR 60 Manual

Coefficient of local pressure loss

2,736 2,099 1,781
0,531 0,455 0,393
Level of acoustic output corrected with filter A.
L = L + 10 log(S) + K
WA W1
L [dB(A)] level of acoustic output corrected with filter A.
WA
L [dB] level of acoustic output L
W1
S [m²] duct cross section
K [dB] correction to the weight filter A (see Tab. 10.3.2.)
A
Level of acoustic output in octave ranges.
L = L + 10 log(S) + L
Woct W1
L [dB] spectrum of acoustic output in octave range
Woct
L [dB] level of acoustic output L
W1
S [m²] duct cross section
L [dB] relative level expressing the shape of the spectrum (see Tab. 10.3.3.)
rel
(-)
1,527 1,272 0,929
0,344 0,307 0,273
A
related to the 1 m² section (see Tab. 10.3.1.)
W1
rel
related to the 1 m² section (see Tab. 10.3.1.)
W1
39
0,636 0,892 0,747
0,243 0,111 0,099
0,627