AZ77597 Combo CO2 & CO & Temperature & Relative Humidity Meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.
features:
Low cost portable meter checking indoor air quality
Big LCD w/backlight to display 6 parameters: CO2 ,CO, temperature, humidity, dew point, wet bulb
Manual calibration is available for CO2/CO/RH%
99 points manual & up to 32000 points auto logging memory
Audible alarm (~80db)threshold setting
Max ,min, average, hold functions
Mini USB output to PC for data analysis
Specifications:
Measuring range
CO2 :0~9999 ppm,(5001~9999 ppm out of scale range)
CO :0~1000 ppm
Temperature:-20~60 C (-5~140 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
Accuracy
CO2:+/-30ppm,+/-5% of reading( 0~5000ppm),Other ranges are not specified
CO:+/-10 ppm for less than 100 ppm;+/-10% or reading for 101~500 ppm;+/-20% of reading for 501ppm and above
Temperature:+/-0.6 C/+/-0.9 F
Relative Humidity :+/-3%RH (at 25 C, 10~90%RH) ; +/-5%RH ( at 25 C , other range )
CO2 Warm-up time:30 seconds
Response time CO2:<30 seconds(90% step change)
CO :<60 seconds(90% step change)
Tair:<2 mins (90% step change)
RH:<10 minutes ( 90% step change)
LCD size: 26(H)x44(L)mm
Meter size: 205(L)x70(W)x56(H)mm
Operating condition:-20 to 50 °C (CO2 sensor),0 to 50 C (CO sensor),-20 to 60 C (for the rest parameters)
Storage condition:-20~ 60 C,10~90%RH
Power supply:AA x 4pcs or 9V adaptor
Battery life:> 24 hours (Alkaline battery)
Weight:200g
