Regulating damper Property The blade is set via a knob in a protec- × × × × tive cup. The setting of the blade is read against × × × × an embossed scale at the rim of the cup. The blade is locked with two screws, × × × × type Pozidriv (PZD2). The blade has reinforced locking with a × sturdy wing nut. The blade is reinforced. ×× The blade is additionally reinforced. × With sturdy handle. ××× With additionally reinforced handle. × With reinforced stop beads. ×× The axle is reinforced. × The damper can be delivered prepared × × × × for motor. The damper can be delivered with mo- × × × × × tor. Ø 80–315 Ø 400 Ø 500 Ø 630 Ø 710×1000 lindab | dampers and measure units DRU Technical data Pressure drop graphs with noise data for dimensioning The solid curves show the pressure drop, Δ p t , over the damper as a function of flow q, and setting angle α . The dashed curves give the A-weighted sound power data, L WA , in dB to the duct. Example Given Dimension Ø100 Flow 60 l/s Pressure drop 200 Pa Obtained from graph Setting angle 40° Sound power level 63 dB (A) Δ p t L WA [dB] Ø80 [Pa] 500 300 200 100 50 30 20 5 1 90 80 70 60 50 α [°] 40 75 70 30 65 60 20 55 50 45 40 10 35 10 20 30 40 50 75 [l/s] q 2 3 45 v 10 15 [m/s] Δ p t L WA [ dB] Ø100 [Pa] 500 300 200 100 50 30 20 8 10 90 80 70 60 50 α [°] 40 75 30 70 65 60 20 55 50 35 30 20 45 40 30 q 40 50 10 120 [l/s] 1 2 3 45 10 15 [m/s] v DUCT-MC Identification number 17.11.002 Lindab reserves the right to make changes without prior notice 2 2022-02-15
Download PDF file