Indoor CO2 Meter/Datalogger


Extech EA80: EasyView™ Indoor Air Quality Meter/Datalogger

Measures CO2

The EA80 checks for Carbon Dioxide concentrations using a maintenance-free dual wave NDIR (non-dispersive infrared) CO2 sensor with a range of 0 to 6,000 PPM. It can automatically data log up to 20,000 data sets or you can manually enter up to 99 sets for later recall. Additional features include: auto power off, data hold, max/min with time stamp and alarm. Comes complete with six AAA batteries, Windows 95/98/NT/2000/ME/XP compatible software and an RS-232 interface cable.

  • Checks for Carbon Dioxide (CO₂) concentrations
  • Maintenance free dual wavelength NDIR (non-dispersive infrared) CO₂
  • CO₂ measurement range: 0 to 6,000ppm
  • Temperature measurement range: -4 to 140°F (-20 to 60°C)
  • Humidity measurement range: 10 to 95%RH
  • Continuous (20,000 sets) or Manual (99 sets) datalogging
  • Complete with (6) AAA batteries, RS-232 cable, and Windows® compatible software
Specifications Range Resolution
Carbon Dioxide (CO₂) 0 to 6,000ppm 1ppm
Temperature -4 to 140°F (-20 to 60°C) 0.1°F/°C
Humidity 10 to 95% 0.1%
Dimensions/ Weight 5.3 x 2.8 x 1.2″ (135 x 72 x 31mm)/ 8.2oz (235g)

Extech SD800: CO2, Humidity and Temperature Datalogger

Records data on an SD card in Excel® format

SD800 monitors air quality in schools, office buildings, greenhouses, hospitals and anywhere that high levels of carbon dioxide are generated. Selectable data sampling rate of 5, 10, 30, 60, 120, 300, 600 seconds or automatic. Maintenance free dual wavelength NDIR (non-dispersive infrared) CO2 sensor. Triple LCD simultaneously displays CO2, Temperature and Relative Humidity. Complete with six AAA batteries, 2G SD memory card, universal AC adaptor, and mounting bracket.

  • Checks for Carbon Dioxide (CO2) concentrations
  • Maintenance free dual wavelength NDIR (non-dispersive infrared) CO2 sensor
  • Triple LCD simultaneously displays CO2 , Temperature and Relative Humidity
  • Measurement ranges: CO2 – 0 to 4,000ppm; Temperature – 32 to 122°F (0 to 50°C); Humidity – 10 to 90%RH
  • Datalogger stores readings on an SD card in Excel® format for easy transfer to a PC
  • Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or Auto
  • Complete with six AAA batteries, 2G SD memory card, universal AC adaptor, and mounting bracket
Specifications Range
CO2 0 to 4,000ppm
Accuracy ±40ppm ( <1000ppm); ±5% rdg (>1000ppm)
Resolution 1ppm
Temperature 32 to 122°F (0 to 50°C)
Accuracy ±1.8°F/0.8°C
Resolution 0.1°F/°C
Humidity 10 to 90%
Accuracy ±4%RH
Resolution 0.1%
Datalogging 20M data using 2G SD memory card
Dimensions 5.2 x 3.1 x 1.3″ (132 x 80 x 32mm)
Weight 9.9oz (282g)

Extech CO240: Indoor Air Quality, Carbon Dioxide (CO2)

Measures Carbon Dioxide (CO2)

The CO240 measures Carbon Dioxide (CO2), Air Temperature and Humidity, as well as Dew Point and Wet Bulb calculations. The user settable high alarm with audible beeper is perfect for conducting a quick check of CO2 level to help adjust the environmental conditions in an enclosed area, such as a greenhouse or nursery, to insure optimal plant grown. Complete with six AAA batteries, USB cable, PC software and soft case.

  • Dual display of Carbon Dioxide (CO₂) concentrations and Relative Humidity, Temperature, Dew Point, or Wet Bulb
  • Maintenance free NDIR (non-dispersive infrared) CO₂ sensor
  • Audible CO₂ warning alarm when concentration level exceeds high user set point
  • Min/Max CO₂ value recall function
  • Includes software and cable for on-line (real-time) datalogging to a PC
  • Automatic Baseline Calibration function
  • Data Hold, Auto Power Off (with disable), Low battery indicator
  • Tripod mount (tripod sold separately)
  • Complete with six AAA batteries, USB cable, PC software, and soft case
Specifications Range Resolution Basic Accuracy
Carbon Dioxide (CO₂) 0 to 9,999ppm 1ppm ±(5%rdg + 75ppm)
Temperature (Air) 14 to 122°F (-10 to 50°C) 0.1°F/°C ±2.0°F (1.0°C)
Relative Humidity 10 to 90%RH 0.1%RH ±5%RH @ 25°C
Dew Point -99.2 to 118°F (-72.9 to 47°C) 0.1°F/°C
Wet Bulb 12.2 to 118.8°F (-11 to 48.2°C) 0.1°F/°C
Dimensions 8.3×2.4×1.6″ (211x60x40mm)
Weight 6.4oz (181.4g)

Extech CO230: Indoor Air Quality, Carbon Dioxide (CO2) Monitor

Measures Carbon Dioxide (CO2), Air Temperature and Humidity

The CO230 measures Carbon Dioxide (CO2), Air Temperature and Humidity, plus calculates Dew Point and Wet Bulb. Features Automatic Baseline Calibration (ABC) with disable for use in areas with continuously elevated CO2 levels. Its alarm function with user settable high/low CO2 level is perfect for monitoring air quality and ensuring proper air ventilation in conference rooms, schools, greenhouses, factories, hotels, hospitals and anywhere that high levels of carbon dioxide are generated. The CO230 also calculates Dew Point and Wet Bulb values, Min/Max CO2 value recall function, statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit), Alarm relay output for ventilation control and wall mount. Complete with Universal AC adaptor and multiple plug types (US, EU, UK, AUS).

  • Checks for Carbon Dioxide (CO₂) concentrations
  • Maintenance free NDIR (non-dispersive infrared) CO₂ sensor
  • Automatic Baseline Calibration (ABC) with disable feature for use in areas with continuously elevated CO₂ levels (>400ppm)
  • Triple LCD simultaneously displays CO₂, Temperature and Humidity
  • Visible and Audible CO₂ warning alarm when concentration level exceeds high or low user set point
  • Calculates Dew Point and Wet Bulb values
  • Min/Max CO₂ value recall function
  • Calculates statistical weighted averages of TWA (8 hour Time Weighted Average) and STEL (15 minute Short Term Exposure Limit)
  • Alarm relay output for ventilation control
  • Desktop or wall mount
  • Complete with Universal AC adaptor and multi-plugs (US, EU, UK, AU)
Specifications Range Resolution
Carbon Dioxide (CO₂) 0 to 9,999ppm 1ppm
Temperature (Air) 14 to 140°F (-10 to 60°C) 0.1°F/°C
Relative Humidity 0.1 to 99.9%RH 0.1%RH
Wet Bulb Calculated
Dew Point Calculated
Dimensions 5.1×3.4×2.4″ (130x85x60mm)
Weight 7.2oz (204g)