Portable Air Quality Monitor CO2, CO, Temp, Humidity

IAQ Features

  • Simultaneously measures and data logs multiple parameters such as: CO, CO2, Temperature, and Relative Humidity to monitor indoor air quality conditions.
  • Calculates Dew Point, Web Bulb Temperature, Absolute Humidity, Humidity Ratio and % Outside Air.
  • Built-in memory allows user to store up to 1500 measurements.
  • Easy user calibration with built-in calibration function.
  • Capable of continuously monitoring parameters via PC.
  • Large LCD shows multiple parameters at a glance.
  • Calculates dew point, wet bulb temperature, absolute humidity and humidity ratio.
  • RS232 with USB adapter


  • IAQ Investigation
  • Industrial Hygiene
  • Ventilation Testing
  • Thermal Comfort Control
  • Monitoring Toxic Gas

The 2212 (formerly 2211) is self contained portable instrument for indoor air quality monitoring (IAQ) Ideal for inspectors, regulators, contractors and others concerned with occupational health and comfort. The instrument can used for making spot checks or more comprehensive studies over time using the data logging capabilities of the unit. The kit includes everything needed and is ready to use out of the box. The software allows for statistical analysis - average - maximum and minimum values and download to PC via an RS232 or USB connection.


Carbon Monoxide
Range 0 to 500ppm
Accuracy ±3% of reading or ±3ppm whichever is greater
Resolution 0.1ppm: 0-99ppm, 1ppm: 100-500 ppm
Carbon Dioxide
Range 0 to 5000ppm
Accuracy ±3% of reading or±50ppm whichever is greater
Resolution 1ppm
Temperature Range -4 to 140F (-20 to 60C)
Accuracy >+/-1F (±0.5C)
Resolution 0.1F (0.1C )
Relative Humidity Range 2 to 98%RH
Accuracy 2 to 80%RH:±2%RH, 80 to 98%RH:±3%RH
Resolution 0.1%RH
Function Normal Mode Normal measuring (does not store and calculate the data.) Relative humidity, CO, CO2, Dew point, Wet bulb temperature, Absolute humidity and Humidity Ratio
Calculation Mode Store the data, and calculate the maximum, minimum and average value
% OA Mode Measure ventilation ratio (Ask for ventilation ratio by calculating from temperature and CO2 value)
Data Output Mode re-calculation of stored data and output of data to PC and Printer.
Calibration Mode Calibration of CO and CO2.
Output Digital RS232C (USB with included adapter)
Analog (options) DC 0 to 1V
Power Supply   AAA Battery x 4 (Mn, Alkaline, or Ni-Cd)
Dimensions Unit 3.5" x 7.5" x 2.0"
Probe Length: 12.5 inch / Diameter: 1.0 inch
Weight (including batteries) Approx. 1.2 lbs (500g)

Ordering Information

IAQ2212 IAQ 2212 (formerly IAQ2211) includes probe, meter, case, probe stand, software and NIST traceable calibration certificate $1880.00
  order online at instrumentsonline.com