à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ áÅÐÍسËÀÙÁÔ > à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ áʧ ÍسËÀÙÁÔ ¤ÇÒÁª×é¹ EN300: Hygro-Thermo-Anemometer-Light-Sound Meter EN300: Hygro-Thermo-Anemometer-Light-Sound Meter Measures Humidity, Temperature, Air Velocity, Light and Sound Features: Rugged 5-in-1 environmental meter with tripod mount and RS-232 PC interface Large dual LCD simultaneous display of Temperature and Air Velocity or Relative Humidity Characters on display reverse direction depending on Hygro-Thermo-Anemometer or Light-Sound Mode Data Hold, Min/Max, Auto power off, Low Battery/Overrange indication Built-in low friction vane wheel improves accuracy of air velocity in ft/min, MPH, m/s, km/h, and Knots Built-in precision thin-film capacitance humidity sensor for fast response Built in thermistor for ambient temperature measurements Type K input measures temperature to 2372° (1300°C) Utilizes precision photo diode and correction filter for Cosine and color corrected light measurements Sound Level measurement meets IEC 61672 class 2 using A frequency weighting and fast response time Complete with Type K thermocouple probe, pouch case, and six 1.5V AAA batteries Specification: Measurements Range Resolution Basic Accuracy Air Velocity ft/min 80 to 5910 ft/min 1ft/min ±3% FS m/s 0.4 to 30m/s 0.1m/s ±%FS km/h 1.4 to 108km/h 0.1km/h ±3% FS MPH 0.9 to 67MPH 0.1MPH ±3% FS knots 0.8 to 58.3 knots 0.1 knots ±3% FS Light Foot Candles 0 to 1860Fc 0.1Fc ±(5% rdg + 8d) Lux 0 to 20000Lux 1Lux ±(5% rdg + 8d) Relative Humidity 10 to 95%RH 0.1%RH ±4%RH of rdg Temperature Thermistor 32 to 122 °F (0 t0 50°C) 0.1° ±2.5°F/1.2°C Type K -148 to 2372°F (-100 to 1300°C) 0.1 ±(1%+2°F1°C/) of rdg Sound dB 35 to 130dB 0.1dB ±1.4dB Frequency 31.5 to 8000Hz Weighting/Response A weighting/fast response Power 6 x AAA batteries Dimensions Meter: 9.8 x 2.8 x 1.3" (248 x 70 x 34mm); Vane: 1.2" (31mm) Weight 11.8oz (335g) For complete specs please download the product datasheet (not available for some accessories) Anemometer EN300 Extech Humidity Lux meter Temperature Thermo-Hygrometer ÇÑ´ËÅÒ¤èÒã¹à¤Ã×èͧà´ÕÂÇ à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ à¤Ã×èͧÇÑ´ÍѵÃÒ¡ÒÃäËÅ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ-¤ÇÒÁª×é¹ à¤Ã×èͧÇÑ´áʧ Ẻ¾¡¾Ò Ẻ㺾Ѵ