lindab | dampers and measure units Damper with flow meter DIRU Technical data for DIRU, DIRBU and DIRVU l = straight distance before and after disturbances Method error ± 7% l ≥ 1 D Dimensioning The dimensioning graphs show the pressure drop over the damper with flow meter, Δ p t . They should be used to deter- mine the pressure drop and to provide information about sound effect levels at different settings. Δ p t Balancing The balancing graphs show the flow as a function of the measured pressure, Δ p m . These graphs should be used to balance the system. l l ≥ 1 D Δ p m l ØD ØD l ØD l ØD l l ≥ 3 D l ≥ 3 D l DUCT-MC Identification number 17.11.002 Lindab reserves the right to make changes without prior notice 2 2018-12-11
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