SO2‑B4 Sulphur Dioxide Sensor

SO2 Gas Sensor, Electrochemical, B‑Series, PPB-Detection

Ultra‑stable PPB‑level SO2 measurement for environmental air‑quality monitoring

The SO2‑B4 provides industry‑leading baseline stability and ultra‑low noise for ambient SO2 monitoring networks. Its B-Series 4-electrode format is widely used in fixed and handheld air-quality instruments requiring accurate low-level SO2 detection.



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Key Specifications:

 

Sensor Model

Target Gas

Package Size

Concentration Range

Sensitivity

T90 Response Time

Zero Current

Noise

Operating Life

Environmental

SO2-B4

Sulphur Dioxide (SO2)

B-Series

0–100 ppm SO2

275–520 nA/ppm at 2 ppm SO2

<60 s

–100 to +100 nA

5 ppb equivalent

>36 months

–30 to +50°C,80–120 kPa, 15–90 %RH

 

Feature

Benefit

Exceptional baseline stability

Minimal recalibration needs.

Ultra‑low noise tested with Alphasense individual sensor board (ISB)

5 ppb noise makes it ideal for high sensitivity ppb applications like ambient air quality monitoring

Smart Sensor Option (B4+)

Built‑in memory

Rugged environmental tolerance

Reliable across outdoor conditions.