à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ TM-4001 Hot Wire Anemometer TM-4001 TENMARS Description Fast response telescoping probe. Air flow volume. CFM , CMM Large LCD display. Displays air (wind) speed in meters/second,feet/minute, kilometers/hr, knots, and miles/hr. Displays maximum and minimum readings and holds any reading. Manual Data Memory and read fucntion (99 records). Specifications Air Flow (volume) Calculation Unit Range Resolution Accuracy CMM 0~9999 0.1 - CFM 0~9999 0.1 - Temperature Measurement Unit Range Resolution Accuracy °C -20~50 0.1 ±1°C °F -4~122 0.1 ±1.8°F Humidity Unit Range Resolution Accuracy %RH 20~80 0.1 ±3.5%RH %RH 80 0.1 ±5%RH Air Velocity Measurement Unit Range Resolution Accuracy m/s 0.1 to 40 m/s 0.01 ±3% of reading ±1%fs km/hr (kph) 0.02 to 144 km/hr 0.1 mph 0.12 to 89.5 mph 0.1 knots (kts) 0.01 to 77.75 knots 0.01 ft / min (fpm) 0 to 7874.0 ft/min 0.1 Beaufort 1~12 1 - Size : 156×73×35mm (L×W× H) Weight : 250g. Power : LR6 (AA) 1.5V×6 batteries Anemometer Hotwire Hotwire Anemometer TENMARS TM-4001 à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´ÅÁ