lindab | dampers and measure units Damper with flow meter FMDRU Dimensions Ød 1 Ød i l Description Applications The flow meter is suitable both for setting up and for conti- nous flow measurement. It is intended for permanent instal- lation and must therefore be specified at the design stage. There is a separate assembly, measuring, balancing and maintenance instruction for this product. Ø 80–630 fullfills tightness class 0 and pressure class A . Design The flow meter consists of two reducers joined together, with measurement nozzles. Each nozzle has a removable plastic plug which prevents dirt from entering. It also eliminates air leakage when measurement is not done. The unit permits insulation of up to 100 mm thickness to be installed without concealing the measurement nozzles or the label plate. The plate can be rotated for best legibility, irre- spective of the way the unit is installed and can easily be removed, to be located away from the unit. The unit also contains a regulating damper DRU to allow balancing. The cup around the damper knob allows insula- tion up to 50 mm thick to be used. If thicker insulation is needed, add the special insulation cup IK. The unit has components which partly block the duct sys- tem. Ød 1 nom 80 100 125 160 200 250 315 400 500 630 Ød i nom 63 80 100 125 160 200 250 315 400 500 l [mm] 300 300 310 315 380 440 570 660 845 1030 m [kg] 0,78 0,94 1,21 1,52 2,20 3,31 4,92 7,81 12,0 18,2 Flow meters with reductions of two dimension steps can be obtained, to give higher reading pressure in the measure- ment nozzles. This entails higher pressure drop and noise generation, however. Advantages • Has low pressure drop due to good aerodynamic design. • Has low noise generation due to good aerodynamic design. • Suitable for use with insulation. Ordering example FMDRU 160 125 Product Dimension Ød 1 Dimension Ød i DUCT-MC Identification number 17.11.002 Lindab reserves the right to make changes without prior notice 1 2020-07-13
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