SO2‑A4F Sulphur Dioxide Sensor

SO2 Gas Sensor, Electrochemical, A‑Series, Filtered PPB-Level

Enhanced selectivity SO2 sensing with ppb‑level resolution for environmental monitoring

Based on the proven SO2‑A4 ppb‑level platform, the SO2‑A4F sulphur dioxide sensor adds targeted filtering to reduce cross‑sensitivities and improve performance. Its A-Series 4-electrode format is widely used in portable 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

Operating Life

Environmental

SO2-A4F

Sulphur Dioxide (SO2)

A-Series

0-50 ppm SO2

320–500 nA / ppm at 2 ppm SO2

< 20 s

–80 to +80 nA (ppb equivalent)

>3 6 months

30 to +50°C, 80–120 kPa,15–90 %RH

 

Feature

Benefit

Filtered design

Lower cross‑sensitivity to NO2, O3, Cl2

PPB‑level resolution

Noise as low as 15 ppb

Consistent low‑drift performance

< ±20 ppb zero drift

Ideal for environmental networks

Stable long‑term monitoring