NO2-A43F Nitrogen Dioxide Sensor

NO2 Gas Sensor, Electrochemical, A-Series, 0–20 ppm NO2

PPB-level NO2 sensor with integral O₃ filter for portable air quality instruments

The NO2‑A43F delivers ppb‑level NO2 measurement with an integrated ozone filter that reduces O2 cross‑sensitivity to zero. Its A‑Series 4‑electrode format is widely used in portable and handheld air‑quality instruments requiring accurate low‑level NO2 detection. IST variants provide on‑sensor calibration and simplified system integration.




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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

NO2-A43F

Nitrogen Dioxide (NO2)

A-Series, 4‑electrode with O2 filter

0–20 ppm NO2 (ppb-level resolution)

−175 to −500 nA/ppm at 2 ppm NO2

< 80 s (0 to 2 ppm step)

> 24 months (24‑month warranted)

 

Feature

Benefit

PPB-level NO2 measurement

Enables high-resolution urban and roadside air quality mapping.

Integrated O2 filter

Reduces ozone interference for accurate NO2 readings

4‑electrode A-Series footprint

Supports advanced biasing and baseline correction for low-noise operation.

Compatible with Alphasense AFE boards

Reduces sensor count while maintaining comprehensive sulphur coverage.

Proven stability across temperature and humidity ranges

Achieves ppb-level noise with the recommended low-noise electronics.

IST “+” smart sensor option

Stores calibration and specification data to streamline multi-node deployments.