Extech Instruments CO240 User Manual

7 CO240-en-US_v1.9 10/22
Specifications
Display
Dual multifunction LCD
CO
2
measure range
0 to 9,999ppm
CO
2
accuracy
± (75ppm + 5% of reading) 0 to 2,000ppm
Operating Temperature
32 to 122°F (0 to 50°C); 0.1° resolution
Temperature Accuracy
± 1.8°F (1.0 °C)
Operating Relative Humidity
0 to 95%RH (avoid condensation)
Relative Humidity Accuracy
± 5% of rdg at 77°F (25°C) otherwise ±7% RH
Dew Point Temperature range
-99.22 to 118°F (-72.9 to 47°C); 0.1° resolution
Wet Bulb Temperature range
12.2 to 118.8°F (-11 to 48.2°C); 0.1° resolution
Storage Temperature
-4 to 122°F (-20 to 50°C)
Storage Humidity
0 to 95%RH (avoid condensation)
Power
AAA batteries x 6 pcs or AC adaptor
Dimensions
8.3 x 2.4 x 1.6” (211 x 60 x 40 mm)
Weight
6.4 oz. (181.4g)

Extech Instruments CO240 Specifications

Display and Measurement

display	Dual multifunction LCD
CO2 measure range	0 to 9, 999 ppm
CO2 accuracy	± (75 ppm + 5% of reading) 0 to 2, 000 ppm

Operating Environment

operating temperature	0 to 50°C (32 to 122°F); 0.1° resolution
operating relative humidity	0 to 95% RH (avoid condensation)
relative humidity accuracy	± 5% of rdg at 25°C (77°F) otherwise ±7% RH

Temperature Ranges

dew point temperature range	‐72.9 to 47°C (‐99.22 to 118°F); 0.1° resolution
wet bulb temperature range	‐11 to 48.2°C (12.2 to 118.8°F); 0.1° resolution
temperature accuracy	± 1°C (1.8 °F)

Storage Conditions

storage temperature	‐20 to 50°C (‐4 to 122°F)
storage humidity	0 to 95% RH (avoid condensation)
dimensions	211 x 60 x 40 mm (8.3 x 2.4 x 1.6")

Power and Weight

power	AAA batteries x 6 pcs or AC adaptor
weight	181.4 g (6.4 oz.)