Description
The Schneider Electric (Barber Colman) ETD500-8 Averaging Duct Sensor features an 8-inch sensing element to monitor average air temperature across duct airflow passages in ventilation and air distribution equipment. It operates by detecting temperature variations along the sensing length and transmitting the measured value to connected control assemblies for regulated operation. Used in air handling and duct-mounted control applications, it supports temperature monitoring and airflow management in HVAC systems. Installed inside duct sections, the sensing element extends into the airstream while connected wiring links the sensor to compatible controllers for continuous temperature measurement and system regulation.









