Description
The A.J. Antunes 8021203090 SPDT Air Differential Pressure Switch is used in HVAC systems in measuring as well as regulating airflow. It works based on the pressure difference between two points in an air duct. When the pressure difference is out of the range of 0.17-6 inches of water column, the switch sounds an alarm or operates a control system to change the airflow. The advantages of this switch are increased efficiency of energy, increased performance of the system, and better indoor air quality to ensure that there is adequate fresh air circulation and to avoid damaging the equipment.
