VVSR compact flow rate controller

The VVSR is a variable flow rate controller available in round (-RU) or square (-RE) models. The compact control unit consists of a control/multi-leaf damper also suitable for shutting off air flow and a tube body with an integrated optimized measuring rod. Adjustment is done by the Belimo compact controller LMV/NVM-D2-MP. The controller is universally usable for supply and exhaust air in high and low pressure systems. The range of operation is between air flow velocities of 2 m/s to 10 m/s, air temperatures between -20°C to +60°C as well as ambient temperatures between 0°C to 50°C. The minimum response pressure is 50 Pa, the control range is between 50 Pa and 1000 Pa. Throughout the whole pressure range the expected deviation is +/- 10°C. Because of the measuring rod and the type of pressure recording the controller is nearly impervious to inflow, making installation near a deflection or junctions with short run-up distances possible.