77597 Digital 4-in-1 Indoor Air Quality IAQ Meter CO2 + CO + RH% + Temperature Data Logger Tester


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Model : 77597 

The portable CO2 meter uses NDIR (non-dispersive infrared) technology to ensure the reliability and long term stability. It's useful in verifying HVAC system performance and air ventilation control.
 
Poor indoor air quality is considered unhealthy because it causes tiredness, loss of ability to concentrate, and even illness (ex. Sick Building Syndrome). IAQ monitoring and survey, especially on CO2 level and air ventilation become widely applied in public areas such as offices, classrooms, factories hospitals and hotels. It also suggested in regulations of industrial in some countries.
 
CO is colorless, odorless, and tasteless gas which is slightly lighter than air. It is highly toxic to humans and animals.

 

Features:
  • Big LCD display with blue backlight to use in dark area
  • One touch to display CO2 / Dew point temperature / Wet bulb temperature / Air temperature / Humidity / CO in turns.
  • Designed with NDIR ( non-dispersive infrared ) Waveguide technology CO2 sensor
  • Programmable warning CO level
  • Long time drift compensation on CO2 sensor
  • Audible alarm (~80db) threshold setting
  • Max, Min, TWA, STEL functions included
  • Mini USB for PC download function for analysis
  • 99 points manually recording
  • 32000/24000 points auto recording
  • Review 99 points manual record
  • Hold function freezes current readings
  • Housing design sorrounds with rails to help Air ventilation for quick & accurate response
  • Easy to manually calibrate C02 at fresh air around 380-420ppm
 
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
  • Resolution : 1ppm,0.1°C/°F, 0.1%RH
  • Accuracy :
    • CO2 : ±30ppm ±5% of reading ( 0~5000ppm)
    • other ranges are not specified
    • CO : +/-10ppm for les than 100ppm
      • +/-10% or reading for 101~500ppm
      • +/-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)
    • Temp : <2 mins (90% step change)
    • RH  : <10 minutes (90% step change)
  • LCD Meter size (mm) : 26(H) x 44(L), 205(L) x 70(W) x 56(H)
  • Operating condition : -20 to 50°C (C02 sensor),0 to 50°C (CO sensor)
    • (avoid condensation)  -20 to 60°C (for the rest parameters
  • Storage condition: -20~60°C , 10~90%RH (avoid condensation)
  • Power supply : AA x 4pcs (not included) or 9V adaptor (not included)
  • battery life : >24 hours (alkaline battery)
  • Weight : 200g
 
Set includes:
  • 1 x  4-in-1 IAQ Meter
  • 1 x English Manual
  • 1 x USB cable
  • 1 x CD software
  • 1 x Carrying case