What instrument is used to measure airflow in a duct system?

The instrument used to measure airflow in a duct system is the anemometer. An anemometer specifically measures the velocity or speed of air moving through a duct, allowing HVAC professionals to assess the effectiveness of the air distribution system. By measuring airflow, technicians can ensure that the system is providing the correct volume of air to different areas, which is crucial for maintaining comfort, efficiency, and indoor air quality.

In contrast, other instruments like the thermometer are designed to measure temperature, the manometer measures pressure in a duct system, and the psychrometer is used for determining humidity levels. While these instruments provide valuable information regarding different aspects of HVAC systems, they do not measure airflow directly like the anemometer does.