à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ AN300 Extech AN300 Large Vane CFM/CMM Thermo-Anemometer The new AN300 Large Vane Anemometer from Extech makes quick work of scanning large HVAC vent and grill openings. "Painting" back and forth in rows across the grill, the AN300 yields an accurate measurement of airflow (ft/min) and volume (CFM). Or use the optional Air Flow Cone Kit (AN300-C) to adapt the AN300 to completely cover ducts and eliminate "painting" altogether using the 8.26" round and 13.6" square flow cones. 4" (10cm) low friction vane head Accurately measure Air Velocity Calculate Air Volume with duct dimensions Measure air temperature with the built-in thermistor Multipoint and averaged readings available Min/Max, Data Hold Auto power off Specifications: Velocity m/s 0.2 to 30m/s ft/min 40 to 5900ft/min Accuracy ±1.5% Volume CFM/CMM 0 to 99999 Temperature Range -4 to 140°F (-20 to 60°C) Accuracy ± (0.6°C) Humidity Range — Accuracy — Wet Bulb — Dew Point — CO2 — Dimensions 10.6x4.2x2” (269x106x51mm) Weight 7oz (200g) Includes: AN300 Large Vane Thermo-Anemometer, four AAA batteries and hard case AN300 Anemometer Extech Extechà¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ Thermo-Anemometer à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ