• Measures carbon dioxide levels, air temperature and relative humidity
• Calculates dew point and wet bulb
• Continuous (20,000 sets) or manual (99 sets) datalogging
• Measures CO2 levels from 0 to 6000ppm with 1ppm resolution
• CO2 accuracy is ±3% of reading or ±50ppm, whichever is greater

The Extech EA80 measures Carbon Dioxide levels, ambient Temperature and Relative Humidity (%RH). It will also calculate dew point and wet bulb temperatures based on those results. It can automatically data log up to 20,000 data sets, or 99 manually entered sets for later recall. Logged data can be later transferred to a PC via an included RS-232 cable. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

The sensor for Temperature, Humidity, Dew Point, and Wet Bulb measurements is located in the remote probe. Hold the probe in the air in the area to be tested. DO NOT immerse in liquid. The sensor for CO2 measurements is located at the top of the meter.

Following sensor warm up and stabilization, the meter’s primary display will indicate the CO2 reading in parts per million (ppm). The second display indicates temperature, the third shows relative humidity.

1. Display

2. Gas exhaust

3. Gas inlet port

4. PC Interface jack

5. AC adapter socket (9V, 300mA)

6. Power Button

7.Data Hold Button

8.Backlight Button

9. MX/MN Button

10. SET Button

11. ALARM button

12. MEM (memory) button

13. (Enter)  button

14. READ button

15. TIME button

16. °C/°F button

17. DEW button

18. WET button

19. Temperature / Humidity sensor probe