lindab | we simplify construction Circular straight low-built silencerKVDPX Model 1 and 2 Pressure loss and sound generation for 1000 and 1250 mm long attenuators (Ød 1 400 - 630 → (l) = 1250 mm) ' p t [Pa] Ø100 Ø125 Ø160 Ø200 Ø250 Ø315 Ø400 Ø500 Ø630 50 8 45 8 7 6 30 Lw 45 dB(A) 7 6 540 20 6 5 40 5 4 10 35 4 35 4 30 3 25 30 3 m/s 5 25 2 m/s 3m/s 2 Lw 20 dB(A) 2 m/s 2 10 20 30 50 50 100 100 200 500 500 1000 1000 2000 5000 10000 5000 [l/s] [m 3 /h] q v K woct correction tables model 1 and 2. Ød 1 [mm] Correction, K Woct (dB) for centre frequency [Hz] 63 125 250 500 1k 2k 4k 8k 63 1 5 1 -2 -5 -14 -20 -31 80 0 3 2 -1 -7 -12 -17 -28 100 2 5 -1 1 -9 -19 -24 -42 125 7 6 2 0 -9 -15 -21 -41 160 8 3 1 0 -8 -14 -19 -37 200 4 4 4 -1 -9 -13 -20 -31 250 5 3 1 -2 -5 -10 -16 -28 315 7 5 2 -3 -5 -11 -17 -30 400 12 6 2 -3 -6 -12 -19 -26 500 11 4 0 -2 -5 -11 -18 -27 630 11 4 0 -2 -5 -12 -20 -26 Tol.+/- 3 3 2 3 3 4 4 5 Sound power levels per octave band L Woct are calculated by adding the octave band corrections K oct to the total power level L WA from the graphs. L Woct = L WA + K oct DUCT-MC Identification number 17.11.002 Lindab reserves the right to make changes without prior notice 4 2021-12-15
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