à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ ÃØè¹ AN500 Extech AN500 Hot Wire Thermo-Anemometer The new Extech AN500 Hot Wire Anemometer provides a compact, accurate way to measure air velocity and volume, even at low flow rates. The telescoping 8mm probe can extend up to 7' (2.1m), while a clever handle design makes it easy to keep the sensor oriented correctly. Measures air velocity and air temperature Calculates air volume in CFM or CMM Small 8mm sensor will fit in a 3/8" hole Adjustable for altitude and GAIN correction Store and recall 36 readings Min/Max/Average, Data hold Auto Power off with disable Specifications: Specifications Range Max Resolution Basic Accuracy m/s 0.2 to 20m/s 0.01m/s ±3% ft/min 40 to 3940ft/min 1ft/min ±3% MPH 0.5 to 45MPH 0.1MPH ±3% Knots 0.4 to 40knots 0.1knots ±3% km/h 0.7 to 75km/h 0.1km/h ±3% CFM/CMM 0 to 999,999 CFM/CMM 0.01 Temperature 32 to 140°F (0 to 60°C) 0.1 deg ±2°F (±1°C) Dimensions 7.1 x 2.8 x 1.3" (180 x 72 x 32mm) Weight 12.5oz (355g) Includes: AN500 Hot Wire Anemometer with telescoping probe with cable, 100V-240V AC Universal Adaptor with 4 plugs, 6 x 1.5V AA batteries, and hard carrying case AN500 Anemometer Extech à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ à¤Ã×èͧÇÑ´ÍѵÃÒ¤ÇÒÁàÃçÇÅÁ