Air Velocity Transmitter Controls Drying Oven Air Flow

The flow of heated air is held to a constant predetermined velocity in this carefully controlled low temperature process drying oven. The constant temperature air supply is modulated by a set of inlet louvers operated by a servo-driven actuator. A Series 641 Air Velocity Transmitter has an optional LED display for local indication of air flow. The LED display provides a quick, visual acknowledgement of proper system performance. The controller compares the Series 641’s signal to the set point in the controller and continuously signals appropriate louver adjustments to the actuator.