Air flow regulator RN

FOR THE PRECISE CONTROL OF CONSTANT VOLUME FLOW RATES Circular self-powered volume flow controllers for the control of supply air or extract air in constant air volume systems Volume flow rate can be set using an external scale, no tools required High control accuracy No on-site test measurements required for commissioning Suitable for airflow velocities of up to 12 m/s Any installation orientation; maintenance-free Casing air leakage to EN 1751, class C Optional equipment and accessories Acoustic cladding for the reduction of case-radiated noise Secondary silencer Type CA, CS or CF for the reduction of air-regenerated noise Hot water heat exchanger Type WL and electric air heater Type EL for reheating the airflow Actuator for switching between setpoint values sizes. Ready-to-commission unit consists of the casing containing a damper blade with low-friction bearings, bellows, external cam plate and leaf spring. Volume flow controllers without actuators are factory set to a reference volume flow rate (customers can set the required volume flow rate on site). SPECIAL CHARACTERISTICS - Setting the volume flow setpoint without tools from the outside on a scale - High control accuracy of the set volume flow - Any installation orientation MATERIALS AND SURFACES - Casing made of galvanised sheet steel - Interior parts: - - Nominal size 80 – 125: Stainless steele 1.4301 - - Nominal size 160 – 400: Galvanised sheet steel - Polyurethane bellows - Plain bearings with PTFE coating - Leaf spring made of stainless steel