Extech CO240 Carbon Dioxide Meter with Temperature, USB Data Logger, 0-9999 ppm

The Extech CO240 carbon dioxide meter measures CO2 from 0 to 9999 ppm and includes a temperature measuring function. Its NDIR sensor delivers accurate readings, while the built-in data logger stores up to 32,000 readings for later analysis via USB.

Advantages

User-settable audible CO2 alarm, adjustable sampling rate from 1 second to 24 hours, and a backlit LCD for clear readings in any light.

Suitable for

• Indoor air quality monitoring in offices, schools, and homes
• HVAC system verification and balancing
• Greenhouse and agricultural CO2 control
• Industrial safety and confined space monitoring

Key specifications

• CO2 measurement range: 0 to 9999 ppm
• CO2 accuracy: ±75 ppm + 5% of reading (0-2000 ppm), ±150 ppm + 5% of reading (>2000 ppm)
• CO2 resolution: 1 ppm
• Temperature measurement range: -10 to 60°C (14 to 140°F)
• Temperature accuracy: ±1°C (±1.8°F)
• Data logging capacity: 32,000 readings (16,000 CO2, 16,000 temperature)
• PC interface: USB
• Display: LCD with backlight
• Power source: 4 x AA batteries or optional AC adapter
• Response time: <30 seconds
• Operating conditions: 0 to 50°C (32 to 122°F), 0 to 95% RH (non-condensing)

Recommendations

For long-term monitoring, use the included software to download and analyze logged data. Calibrate periodically for best accuracy.