NO2-A1 Nitrogen Dioxide Sensor

NO2 Gas Sensor, Electrochemical, A-Series, 0–20 ppm NO

Standard NO2 sensor for industrial safety, HVAC and high-humidity mining applications

The NO2‑A1 is a compact A‑Series electrochemical sensor designed for handheld and portable instruments needing reliable 0–20 ppm NO2 detection. It delivers strong low‑level resolution for general and industrial safety, HVAC, and mining applications. Also available in an IST digital variant for plug‑and‑play OEM integration
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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Warranty

NO2-A1

Nitrogen Dioxide (NO2)

A-Series, 3‑electrode

0–20 ppm NO2

−250 to −650 nA/ppm in 10 ppm NO2

< 50 s (0 to 10 ppm step)

> 24 months (24‑month warranted)

 

Feature

Benefit

Standard A-Series NO2 sensor

Ideal baseline choice for portable and fixed NO2 safety monitors.

0–20 ppm detection range

Covers typical occupational exposure limits and alarm thresholds.

A-Series 3‑electrode package

Drop-in compatible with other Alphasense toxic A-Series sensors.

Low noise and low zero current

Supports stable low-level alarms in high-humidity environments.

Available as NO2-A1+ with Integrated Smart Technology (IST)

On-board temperature sensing and stored calibration simplify OEM integration.

>24-month operational life

Reduces maintenance and total cost of ownership for safety fleets.