à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ AN25 Heat Index Anemometer Compact indoor/outdoor meter for measuring up to 7 environmental parameters Feature : Built-in multiparameter sensors measure Air Velocity, Heat Index, Wet Bulb Globe Temperature (WGBT), Humidity, Ambient Temperature, Dew Point, Wet Bulb, Temperature, and Windchill MIn/Max/Average (5sec/10sec/13sec) Data Hold, Auto Power Off with disable Replaceable Mini impeller (vane) Complete with CR2032 battery Specifications : Specifications Range Resolution Basic Accuracy Air Velocity ft/min 80 to 4920ft/min 0.1ft/min, 1ft/min (>1000ft/min) ±3%FS m/s 0.4 to 25m/s 0.1m/s ±3%FS km/h 1.4 to 90.0km/h 0.1km/h ±3%FS mph 0.9 to 55.9mph 0.1mph ±3%FS knots 0.8 to 48.6 knots 0.1 knots ±3%FS Temperature/Windchill 5 to 122°F (-15 to 50°C) 0.1°F/C ±2°F/1°C Relative Humidity 5.0 to 95.0% RH 0.1%RH ±3% Wet Buld 5 to 122°F (-15 to 50°C) 0.1°F/C Dew Point -103 to 122°F (-75 to 50°C) 0.1°F/C Heat Index -31 to 401°F (-35 to 205°C) 0.1°F/C WBGT -20.2 to 130°F (-29 to 54.5°C) 0.1°F/C Dimensions/Weight 6×1 .6×0.7" (152×40×18mm) / 2.1oz (60g) Air Velocity Meter AN25 Anemometer Extech Humidity Temperature à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ Ẻ㺾Ѵ