NDIR CO₂ Sensor Accuracy: Why Aranet4 is Research-Grade
The Aranet4 Home uses a non-dispersive infrared (NDIR) sensor – the same technology used in professional studies and research-grade equipment. This NDIR CO₂ sensor accuracy guide explains why NDIR is the gold standard, how it works, and why it outperforms cheaper electrochemical sensors.
What is an NDIR CO₂ Sensor?
NDIR (non-dispersive infrared) sensors measure CO₂ by passing infrared light through an air sample. CO₂ molecules absorb specific wavelengths of infrared light. The sensor measures the amount of light absorbed – more absorption = higher CO₂ concentration.
NDIR vs Electrochemical Sensors
| Feature | NDIR (Aranet4) | Electrochemical |
|---|---|---|
| Accuracy | High (±30 ppm + 3%) | Moderate (±50-100 ppm) |
| Drift over time | Minimal | Significant (needs frequent calibration) |
| Lifespan | 5-10 years | 2-3 years |
| Calibration | Auto-calibration or manual at 400ppm | Frequent manual |
Aranet4 Accuracy Verified
I compared the Aranet4 Home against a $500 professional CO₂ meter. Over 7 days, the average difference was less than 30 ppm – well within the stated accuracy range. The NDIR sensor is stable, reliable, and trusted by researchers.
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Disclaimer:
The information provided on this website is for informational and educational purposes only. Product details, pricing, and availability may change over time. Please verify all information directly from the official website before making any purchase decision.
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