DESCRIPTION:
The Extech HD350 is a rugged Pitot tube anemometer and differential manometer engineered for precise measurement of air velocity, air flow (CFM/CMM), differential pressure, and ambient temperature, making it valuable for HVAC system analysis, duct testing, and industrial airflow diagnostics. It features a Pitot tube with two connection hoses to access confined or hard-to-reach air streams and a large backlit LCD that displays pressure, velocity/flow, and temperature concurrently. The unit supports five selectable pressure units, MIN/MAX/AVG recording with time stamps, data hold, zero correction, and USB connectivity with bundled software for data transfer to a PC. Internal memory stores up to 99 readings per mode. 

Key Features:

• Measures differential pressure in five units (psi, mbar, inHO, mmHO, Pa) with ±0.3 % full-scale accuracy. 

• Air velocity range: ~1 to 80 m/s (~200 to 15 733 ft/min). 

• Air flow (CFM/CMM) readings up to 99 999 with resolution to 0.001. 

• Ambient temperature measurement concurrently. 

• Large backlit LCD with data hold and zero offset functions. 

• Memory: store/recall up to 99 readings per measurement mode. 

• Recording: MIN/MAX/AVG with relative time stamp. 

• USB port and bundled Windows® compatible software for PC data download. 

• Includes Pitot tube, two 33.5 in (85 cm) hoses, USB cable/software, 9 V battery, and hard carrying case.