HD350: Pitot Tube Anemometer + Differential Manometer Features: • Simultaneous display of Pressure, Air Velocity or Air Flow plus Temperature • ±0.7252psi range • 5 selectable units of pressure measurement • Max/Min/Avg recording and Relative time stamp • Data Hold and Auto power off functions • Large LCD display with backlighting • Zero function for offset correction or measurement • Store/Recall up to 99 readings in each mode • USB port includes software • Includes Windows® compatible software with cable,9V battery, pitot tube with two 33.5” (85cm) connection hoses, and hard carrying case Specifications: Specifications Range Resolution Accuracy Pressure psi 0.7252psi 0.0001psi ±0.3%FS mbar 50.00mbar 0.01mbar ±0.3%FS inH2O 20.07inH2O 0.01inH2O ±0.3%FS mmH2O 509.8mmH2O 0.01mmH2O ±0.3%FS Pa 5000Pa 1Pa ±0.3%FS Repeatability ±0.2% (Max. ±0.5%FS) Linearity/Hysteresis ±0.29FS Maximum Pressure 10psi Response Time 0.5s typical Air Velocity ft/min 200 to 15733 1 ±3% rdg m/s 1 to 80.00 0.01 ±3% rdg km/h 3.5 to 288.0 0.1 ±3% rdg MPH 2.25 to 178.66 0.01 ±3% rdg knots 2.0 to 154.6 0.1 ±3% rdg Air Flow CFM 0 to 99,999 0.001 ±3% rdg CMM 0 to 99,999 0.001 ±3% rdg Temperature °F 32.0 to 122.0°F 0.1° ±2°F °C 0 to 50°C 0.1° ±1°C Dimensions/Weight Meter: 8.2 x 2.9 x 1.9" (210 x 75 x 50mm) / 12oz (340g) Pitot Tube: 15.4 x 7.7” (390 x 195mm) / 7.2oz (204g) Anemometer Extech HD350 Pilot Tube à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ à¤Ã×èͧÇÑ´ÍѵÃÒ¡ÒÃäËÅ