à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ áʧ ÃØè¹ 45170CM Brand Extech à¤Ã×èͧÇÑ´ÅÁ, ÍسËÀÙÁÔ, ¤ÇÒÁª×é¹, áʧ 45170CM 45170CM: 5-in-1 Environmental Meter Measures Air Velocity, Air Flow, Humidity, Temperature and Light Features: Ideal for professional or home use in testing the environmental quality in a building Ergonomic housing with large dual LCD Low friction vane wheel improves accuracy of Air Velocity and Air Flow measurements Utilizes precision photo diode and color correction filter for light measurements Thin-film capacitance humidity sensor for fast response Thermistor measures ambient Temperature Type K input allows to measure temperature up to 2372°F (1300°C). Type K thermocouple probe sold separately! Data Hold, Min/Max, Auto Power Off Complete with built-in sensors, wrist strap, and 9V battery Specification Range Resolution Accuracy Air Velocity 80 to 5910 ft/min 0.4 to 30 m/s 1.4 to 108 km/h 0.9 to 67 MPH 0.8 to 58.3 knots 1 ft/min 0.1 m/s 0.1 km/h 0.1 MPH 0.1 knots ±3% Full Scale Air Flow 0.01 to 1908400 CFM 0.001 to 54 000 CMM 0.001 CFM 0.001 CMM n/a Light Level 0 to 1860 fc 0 to 20000 lux 0.1 fc 1 lux ±(5% rdg + 8 digits) Relative Humidity 10 to 95% RH 0.1% RH ±4% RH of rdg Temperature (Thermistor) 32 to 122 °F 0 to 50 °C 0.1 °F 0.1 °C ±2.5°F (1.2°C) Temperature (Type K) -148 to 2372 °F -100 to 1300 °C 0.1 °F 0.1 °C ±(1%+2°F)/ (1%+1°C) of rdg Functions Recall of highest/lowest reading, data hold, auto power off Operating Conditions 0 to 50 °C (32 to 122 °F); < 80% RH Power Supply 9 Volt Battery Dimensions Instrument: 156 x 60 x 33 mm (6.1 x 2.4 x 1.3 in) Vane Diameter: 31 mm (1.2 in) Weight 160 g (5.7 oz) 45170CM Anemometer Extech Light meter Lux meter Thermometer ¤ÇÒÁª×é¹ ÍسËÀÙÁÔ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ à¤Ã×èͧÇÑ´áʧ