

Extech AN300 Anemometer
The Extech AN300 is a versatile handheld instrument designed to measure air velocity, airflow (CFM/CMM), and air temperature. Featuring a 4-inch (10 cm) vane, it provides accurate readings for HVAC professionals and environmental engineers, especially when assessing larger ducts and ventilation systems.
Description
The Extech AN300 Large Vane CFM/CMM Thermo-Anemometer is engineered for precision in airflow measurements across various applications, including HVAC system diagnostics, environmental monitoring, and industrial airflow assessments. Its 4-inch (10 cm) vane allows for more precise readings on larger ducts, ensuring accurate data collection in challenging environments.
This instrument simultaneously displays air velocity and temperature, providing real-time insights into airflow conditions. The built-in thermistor measures air temperature within a range of -4 to 140°F (-20 to 60°C), with an accuracy of ±0.6°C. For airflow measurements, the AN300 offers a wide velocity range from 40 to 5900 ft/min (0.2 to 30 m/s), with an accuracy of ±1.5%, and can compute air volume in both cubic feet per minute (CFM) and cubic meters per minute (CMM) up to 99,999 units.
The device features a dual-function LCD display, allowing users to view multiple parameters simultaneously. It also includes functions such as data hold, min/max readings, and auto power-off to conserve battery life. The AN300 is powered by four AAA batteries and comes with a hard carrying case for portability and protection.
For enhanced measurement capabilities, the optional AN300-C airflow cone and funnel adapter kit provides a quick and easy means of airflow measurement for common duct sizes, streamlining the process and improving measurement accuracy.
Features
- Large Vane Design: 4-inch (10 cm) vane for accurate readings in larger ducts.
- Dual LCD Display: Simultaneously shows air velocity and temperature.
- Wide Measurement Range: Velocity from 40 to 5900 ft/min (0.2 to 30 m/s); temperature from -4 to 140°F (-20 to 60°C).
- High Accuracy: ±1.5% for air velocity; ±0.6°C for temperature.
- Airflow Calculation: Computes air volume in CFM and CMM up to 99,999 units.
- Data Hold and Min/Max Functions: Capture and display peak readings.
- Auto Power-Off: Conserves battery life when not in use.
- Portable Design: Includes a hard carrying case for easy transport.
- Optional Adapter Kit: AN300-C kit for measuring airflow in common duct sizes.
- User-Friendly Interface: Intuitive controls for ease of operation.
Includes
- Carrying Case