Smart Meter AZ-7755 CO2 Detector Humidity Dew Point Temperature Detection RH Temp CO2 Tester

الوصف

Low cost portable meter checking indoor air quality Big LCD displays CO2 ,temp. & humidity simultaneously Designed with NDIR (non-dispersive infrared) waveguide technology CO2 sensor Manual calibration is recommended Warning carbon dioxide level programmable Backlight function for working in dark place Long time drift compensation Audible alarm (~80db)threshold setting Max ,min, average functions included PC output every 2 seconds for on line analysis Hold function freezes current readings Display 8 hrs TWA value (time-weighted average) or 15 minutes STEL value (short-term exposure limit) Housing design surrounds with rails to help air ventilation for quick and accurate response Easy to calibrate at fresh air around 380-420ppm Measuring range:0~9999 ppm, (2001~9999 ppm out of scale range) Temperature:-10~60 C (14~140 F) Relative Humidity:0.1%~99.9%RH DP(Dew point temp.):-20.0~59.9 C WB(Wet bulb temp.):-5.0~59.9 C Resolution:1ppm , 0.1 C/ F, 0.1%RH Accuracy:+50ppm+5% of reading(0~2000ppm) Other ranges are not specified Temperature:+0.6 C/+0.9 F Relative Humidity:+5%RH (at 25 C , others) Response time Meter size (LxWxH,mm):205x70x56 200g