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 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)

>36 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