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Extech
Extech CO240 Indoor Air Quality Meter
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Extech CO240: CO2 0–9999 ppm handheld IAQ meter. RFQ.
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Key parameters
Measuring range
CO2 0–9,999 ppm; temperature 14–122°F (−10 to 50°C); humidity 10–90% RH; dew point −99.22 to 118°F; wet bulb 12.2–118.8°F
Accuracy
CO2 ±(75 ppm + 5% of reading); temperature ±2.0°F/1.0°C; humidity ±5% RH @ 25°C
Supply
6 × AAA (1.5 V) batteries; universal AC adaptor included
Approvals
CE
Sensor type
Maintenance-free NDIR CO2 sensor with Automatic Baseline Calibration
Resolution
CO2 1 ppm; temperature/dew/wet bulb 0.1°F/°C; humidity 0.1% RH
Fits portable indoor air quality surveys where you need an Extech CO240—handheld IAQ meter covering CO2 from 0 to 9999 ppm with temperature and humidity class functions for offices, schools, and commissioning walks.
Key advantages
- CO2 — 0–9999 ppm
- Platform — Extech CO240 handheld IAQ
- Params — CO2 with temperature and humidity class functions
- Form — Portable IAQ meter
- Use — Indoor air quality spot checks
Typical applications
- Office IAQ walks.
- Classroom CO2 surveys.
- HVAC commissioning spot checks.
Selection guide
- Handheld vs desktop CO220
- Logging need
- Alarm thresholds
Common mistakes
- Breathing into sensor.
- Ignoring warm-up.
- Expecting process gas CO2.
When to RFQ / what to tell us
- Accessories.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 41459 |
| Brand | Extech |
| Model | CO240 |
| Product type | IAQ Meter |
| Type | Handheld IAQ meter (Extech CO240) |
| Range | 0–9999 ppm CO2 |
| Params | CO2 with temperature and humidity class IAQ functions |
| Platform | Extech CO240 |
Documents
FAQ
Q: CO2 range? A: 0 to 9999 ppm.
Q: Form? A: Handheld IAQ meter.
Q: What should I send for a quote? A: Quantity, ship-to.
Links
- Request a Quote
- Get selection help
- Category-Meters/)
| Parameter | Value |
|---|---|
| Measuring range | CO2 0–9,999 ppm; temperature 14–122°F (−10 to 50°C); humidity 10–90% RH; dew point −99.22 to 118°F; wet bulb 12.2–118.8°F |
| Accuracy | CO2 ±(75 ppm + 5% of reading); temperature ±2.0°F/1.0°C; humidity ±5% RH @ 25°C |
| Supply | 6 × AAA (1.5 V) batteries; universal AC adaptor included |
| Approvals | CE |
| Sensor type | Maintenance-free NDIR CO2 sensor with Automatic Baseline Calibration |
| Resolution | CO2 1 ppm; temperature/dew/wet bulb 0.1°F/°C; humidity 0.1% RH |
| Functions | Dual display CO2 with RH/temp/dew/wet bulb; audible high-CO2 alarm; Min/Max; USB real-time PC streaming; data hold; APO |
| Dimensions | 8.3 × 2.4 × 1.6 in (211 × 60 × 40 mm) |
| Weight | 6.4 oz (181.4 g) |
| Warranty | 2 years |