Extech Instruments CO230, CO240, CO250, EA80, SD800 Catalog Page

Indoor Air Quality Carbon Dioxide Monitors/Meters Indoor Air Quality Carbon Dioxide Meters/Dataloggers

N Indicates products that are available with optional calibration traceable to NIST. See page 160 for a complete listing.

CO230 Indoor Air Quality CO2 Monitor

Automatic Baseline Calibration (ABC) with disable for use in areas with
continuously elevated CO

• Maintenance free NDIR (non-dispersive infrared) CO2 sensor

• Desktop or wall mount with triple LCD displays CO2, Temperature,
and Humidity; Calculates Dew Point and Wet Bulb values

• Visible/Audible CO

• 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

• Complete with Universal AC adaptor and multiple plug
types (US, EU, UK, AUS); 1 year warranty

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 5.1x3.4x2.4" (130x85x60mm)
Weight 7.2oz (204g)

levels (>400ppm)

2

warning alarm when level exceeds high or low user set point

2

CO250 Portable Indoor Air Quality CO2 Meter

Measures Carbon Dioxide (CO2) , Temperature, Humidity, Dew Point, and Wet
Bulb and calculates statistical 8 hour and 15 minute time weighted averages

• Checks for Carbon Dioxide (CO2) concentrations, measures Temperature
and Relative Humidity, and displays calculated Dew Point and Wet Bulb

• Calculates statistical weighted averages of TWA (8 hour time weighted
average) and STEL (15 minute short term exposure limit)

• Maintenance free NDIR (non-dispersive infrared) CO

• Backlit triple LCD display and user programmable audible alarm

• RS-232 interface, software and cable included to analyze data on a PC

• Optional 33% and 75% RH calibration bottles (RH300-CAL)

Measure CO2 level in office
buildings to ensure proper
ventilation. Includes software
and cable, 4 AA batteries,
and case; 1 year warranty

SPECIFICATIONS RANGE RESOLUTION

Carbon Dioxide (CO2) 0 to 5,000ppm 1ppm
Temperature 14 to 140°F (-10 to 60°C) 0.1°F/°C
Humidity 0.0 to 99.9% 0.1%
Dimensions/ Weight 7.9x2.7x2.3” (200x70x57mm)/ 6.7 oz. (190g)

ORDERING

CO250 Portable Indoor Air Quality CO2 Meter $399.99
RH300-CAL 33% and 75%RH Calibration Kit $59.99

sensor

2

ORDERING

CO230 Indoor Air Quality CO2 Monitor $299.99

CO240 Handheld Indoor Air Quality CO2 Meter

Dual display of CO2 level and 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

• Software for on-line (real-time) data streaming to a PC

• Automatic Baseline Calibration function

• Data hold, Low battery indicator, and Auto Power Off (with disable) function

• Tripod mount (tripod sold separately)

• Complete with six AAA batteries, USB cable, PC software, Universal AC
adaptor (with 4 plugs US, EU, UK, AUS), and soft case; 1 year warranty

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 8.3x2.4x1.6" (211x60x40mm)
Weight 6.4oz (181.4g)

EA80 Indoor Air Quality CO2 Meter/Datalogger

Measures CO2 level, Temperature, Humidity, Dew Point and Wet Bulb

• Checks for Carbon Dioxide (CO2) concentrations, measures Temperature
and Relative Humidity, and displays calculated Dew Point and Wet Bulb

• Maintenance free dual wavelength NDIR (non-dispersive infrared) CO

• Continuous (20,000 sets) or manual (99 sets) datalogging

• Data hold, Max/Min with Time stamp, Alarm, and Auto Power Off

• Easy calibration in fresh air

Includes 6 AAA batteries,
RS-232 cable, and

®

Windows
software; 1 year warranty

compatible

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)

ORDERING

EA80 Indoor Air Quality CO2 Meter/Datalogger $789.00

SD800 CO2/Humidity/Temperature Datalogger

Records data on an SD card in Excel® format to transfer to a PC for analysis

• 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

• Selectable data sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or Auto

sensor

2

ORDERING

CO240 Handheld Indoor Air Quality CO2 Meter $279.99

106

Includes 6 AAA batteries,
SD memory card,
Universal AC adaptor,
and mounting bracket;
1 year warranty

SPECIFICATIONS RANGE MAX. RESOLUTION BASIC ACCURACY

Carbon Dioxide (CO2) 0 to 4,000ppm 1ppm ±40ppm (<1000ppm);

Temperature 32 to 122°F (0 to 50°C) 0.1°F/°C ±1.8°F/0.8°C
Humidity 10 to 90% 0.1% ±4%RH
Datalogging Datalogs using 4GB SD memory card (included)
Dimensions/ Weight 5.2 x 3.1 x 1.3" (132 x 80 x 32mm)/ 9.9oz (282g)

ORDERING

SD800 CO

/Humidity/Temperature Datalogger $409.99

2

±5% rdg (>1000ppm)

107