Airflow Sensor Relay DRPV-1, DRPV-1V for Duct Flow Control

The relay sensor is designed to control the presence of air and gas flow on straight sections of circular and rectangular ducts, as well as for two-position control of actuators in case of deviation of flow rate from the specified parameters. The principle of operation of the sensor-relay is based on the equilibrium of forces developed by the dynamic head of air on the damper and forces developed by the elements of the sensor-relay mechanism.