Differential pressure flow controller VRF active

for air

The VRFactive volume flow controllers are used to control a constant or variable volume flow in rectangular air ducts of Comfort Air Technology systems, up to full shut-off, regardless of the inlet pressure. Available with dynamic (VRFactive) and static (VRFactive-s) measuring principle. Activation and control are carried out with external energy (electrical). The housing cross-sections match the recommended edge lengths for rectangular air ducts in accordance with DIN EN 1505. This makes it possible to select the largest possible flow cross-section even in cramped installation conditions. The housing has flanges with slotted holes, with cage nuts for the insulated version. • Highest control accuracy of all known controllers in the low air velocity range due to differential pressure amplification • Energy-efficient – minimal pressure loss due to small differential pressure element • Very short design, insensitive to inflow, simple integration • Optimized construction with particularly high airtightness • Also with static differential pressure measurement – suitable for laboratories and hospital Powerful effect: LTG ActiveControl map measurement • Highest measuring accuracy of all known systems in the low air velocity range. • Combines extremely short installation lengths with maximum control accuracy in the low air velocity range • Insensitive to incident flow due to optimized air routing to the measuring element • Max. 5 % deviation for Vnenn