Model:AM4836C 1.APPLICATION Widely used in data collection for boiler, refrigeration industry, ventilation duct, environment monitor, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire department 2. SPECIFICATIONS 2.1 General Specifications Display: 0.5" (13 mm) 4-digit LCD Measurement units: Air Velocity: m/s, km/h, ft/min, knots Air Flow: CMM (m³/min); CFM (ft³/min) Beaufort Scale: Force Wave Height: m Direction: °from the North direction Data hold: Maximum Value Data memorized:24 groups Sampling rate: reading per second approx Sensors:Air velocity/flow sensor: 3-cup probe; Direction probe: Low friction probe Temperature sensor: Precision thermistor Automatic Power off: 0-9 minutes set by users Data Output : RS 232 C serial interface Operating Temperature: 32°F to 122°F (0°C to 50°C) Operating Humidity : Max. 80% RH Power Supply : 4x1.5AAA size Weight: 260g (0.57lb) including batteries & probe Dimensions:Main instrument: 156x67x28mm (6.1x2.6x1.1") Velocity sensor: 65x65x115mm Direction sensor: 86x69x115mm Optional Accessorry: Cable+Software for RS232C or USB 2.2 Range Specifications Air Velocity Range Resolution Accuracy m/s (meters per sec) 0.4-45.0 0.1 m/s ± (2%+0.1m/s) km/h (kilo-meters/hour) 1.4-162.0 0.1 km/hr ±(2% +0.1km/hr) ft/min (feet per minute) 80-8860 0.1 ft/min ±(2% + 1ft/min) knots (nautical MPH) 0.8-88.0 0.1 knots ±(2% +0.1 nots) Air Flow CMM (cubic meters/min) 0-9999 0.001 to1 ±(2% +1m³/min) CFM (cubic ft/min) 0-9999 0.001 to1 ±(2% +1ft³/min) Beaufort Scale 0-12 0.1 ±0.5 Direction 0-360° 22.5° ±22.5° Wave Height 0-14 0.1 ±0.1 Air Temperature 32 - 140℉ 0.1 ℉ 0.9 ℉ 0-60 ℃ 0.1 ℃ 0.5 ℃