Reference only — this item is no longer available. This product has been discontinued and cannot be ordered. We keep the page online so the specifications and documentation stay available to anyone still running the equipment. Current replacements are listed further down.

Discontinued

Extech Air Quality Meter (EA80) CO2, Temp, RH, Dew Point & Wet Bulb

Reference only — not for sale

Model	EA80
Manufacturer	Extech
Category	Air Quality
Status	Discontinued

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Product details (archived)

The information below is retained for reference only. This item is discontinued and cannot be ordered.

Indoor Air Quality Meter with Internal Datalogger

Measures CO2 , Temperature, Humidity, Dew Point, and Wet Bulb
Checks for Carbon Dioxide (CO2) concentrations
Maintenance free dual wavelength NDIR (non-dispersive infrared) CO2 sensor
Continuous (20,000 sets) or Manual (99 sets) data logging

Specifications:

Relative Humidity Range: 10 to 95%RH
Resolution: 0.1%RH
Accuracy:
- ±3%RH at 25°C (77°F) and 30 to 95% RH
- ±5%RH at 25°C (77°F) and 10 to 30% RH
Sensor type: Precision capacitance sensor
Response time:
- 45 to 95%RH ≤ 1 minute
- 95 to 45%RH ≤ 3 minutes
Temperature Range: -20° to 60°C (-4° to 140°F)
Resolution: 0.1°
Accuracy: ±0.5°C, ±0.9°F
Sensor type: Thermistor
Response time: approximately 2 seconds at 10°C
Display: LCD triple display
Display Rate: One time per second
Low Battery Indication: The '+' is displayed when the battery voltage drops below the operating voltage
Power Supply: (6) AAA batteries or Regulated AC adapter
Battery Life: Approx. 8 hours by using alkaline batteries (without backlight or Alarm function). If data logging over a long period of time, use an AC adapter.
Manual Data Memory Capacity: 99 sets.
Auto Data logging Capacity: 20,000 sets (maximum 99 blocks)
Operating Temperature Range: 5° to 50°C (41° to 122°F)
Storage Temperature Range: -10° to 60°C (-14° to 140°F)
Operating Humidity Range: 10 to 90%RH
Storage Humidity Range: 10 to 90%RH
Dimensions: 6.22" x 2.83" x 1.38"
Weight: approx 255g (including batteries)

CO2 Specifications:

Sensing Range: 0 to 6000ppm
Resolution: 1ppm
Accuracy: ±3% of reading at 101.4 kPa (29.92 inHg) and 25°C (77°F) or ±50ppm, whichever is greater
Sensing Method: Dual wavelength detector with non-dispersive infrared (NDIR) sensor
Gas Sampling Mode: Diffusion
Warm up time: 10 seconds
Response time: <10 minutes in still air
Temperature Coefficient: Add 0.36% of reading per °C (±0.2% of reading per °F) away from calibration temperature

Supplied with: