Davis Instruments Air Flow Cone, 8" X 8"

These handheld meters simultaneously display air velocity (m/s, fpm, Km/h) and temperature (°F or °C) on a large, backlit LCD. The units also features detection of flow direction, Hold function, min/max and average readings, and auto shut-off. Choose from three vane diameters ranging from 0.55" (14 mm) to 4" (100 mm)-allowing you to fit the vane probe either into/outside almost any duct, conduit, grille, or wall space. The retractable cable measures up to 8-feet (2.4 m). All three Davis Instruments models measure air velocity, temperature and calculate volumetric flow rate without the need for density correction factorization. They also feature an average reading mode which provides one overall average measurement for a single area. The DAFM4000 model is compatible with an airflow cone (sold separately) for proper air flow balancing. Airflow cones are a fast and accurate method of maximizing the usefulness of your 4'' (100mm) rotating vane anemometer, also an excellent choose for small grilles. For a modest investment, you can enhance the capability of your rotating vane, turning it into an air volume flow balancing tool. What's Included: Soft carrying case, 9 V battery, and calibration document supplied by the manufacturer. Three different vane sizes let you take measurements even in the tightest areas Smallest vane measures only 0.55" (14 mm) in diameter Automatic CFM measurements Lightweight, robust, and simple-to-use Provides accurate and reliable readings every time Ideal for HVAC commissioning at grilles, ducts, and diffusers