7 in1 Air flow/Velocity/Temp/Humidity/Dew Point/Wet Bulb/BTU PSYCHROMETER / ANEMOMETER 840034 BTU (British Thermal Units) Wet Bulb Dew Point Humidity Air Speed Air Volume Air Temperature This unique instrument combines the features of an anemometer and a psychrometer. Also calculates air volume and BTU capacity. Excellent for HVAC, IAQ and environmental work. Auto ranging with air velocity in m/sor ft/s, air volume in CFM or m³/sec and temperature in ºC or ºF. Features min/max/ave, hold, auto power off, LCD backlight and a computer interface. The probe detaches for easy replacement and repair. Comes in a hard carrying case complete with a probe, tripod mounting screw and 4 AAA batteries. Weight: 10oz (280g). Dim: meter 7” x 3” x 1½” (175 x 75 x 35mm), sensor head diameter 3” (75mm). SPECIFICATIONS Range Resolution Accuracy Air Volume m³/sec 0 ~ 99999 0.1 (0 ~ 999.9) 1 (1000 ~ 99999) ±5% Air Volume CFM (ft3/min) Airspeed m/s 0.3 ~ 35 0.1 Airspeed ft/s 1 ~ 114 Air Temperature ºC -20 ~ 60º ±0.6ºC Air Temperature ºF -4 ~ 140º ±1ºF RH 0 ~ 100% ±3%@10 ~ 90%RH (cal temp.), otherwise ±5% Dew Point ºC -68 ~ 70º - Dew Point ºF -90 ~ 158º Wet Bulb ºC -22 ~ 70º Wet Bulb ºF -7.6 ~ 158º Capacity BTU/H 0 ~ 99999 kw 0.1 (0 ~ 999.9) 1 (1000 ~ 99999) 7 in 1 meter 840034 Anemometer Humidity SPER Scientific Temperature à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´»ÃÔÁÒµÃÅÁ à¤Ã×èͧÇÑ´ÍѵÃÒ¤ÇÒÁàÃçÇÅÁ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ ¤ÇÒÁª×é¹