Sulphur Dioxide Sensors (SO2)

Sulfur Dioxide Gas Sensors

Sulphur dioxide or Sulfur dioxide (SO2) occurs naturally via volcanic activity and is also produced as a by-product of copper extraction and the burning of fossil fuels contaminated with sulphur compounds. It is sulphur dioxide which is responsible for the smell of burnt matches.

Breathing in sulphur dioxide causes irritation of the nose and throat. Exposure to higher concentrations can cause nausea, vomiting, stomach pain and corrosive damage to the airways and lungs. People with asthma may be more sensitive to the effects.

We produce Sulphur Dioxide Sensors (SO2 Sensors) in a number of form factors and in both PPM and PPB variants. Our SO2 sensors are high-quality, high-accuracy and robust enough for a variety of industrial applications.

Alphasense SO2 Sensors

Alphasense Sulfur Dioxide Sensors (SO2 Sensors) are available in a wide range of formats and both PPM and PPB variants, making them suitable for use in variety of applications, from fixed and portable detection instruments to environmental monitoring systems and networks.

A: 20mm diameter, the industry standard size for portable gas detectors
B: 32mm diameter package, the best choice for fixed site applications
D: miniature, with proven long-term performance. Sensors designed for the next generation of portable gas detectors.

The SO2 range provides OEMs with reliable sensors for use in a variety of applications. Strong signal levels combined with low zero current allows resolution below 1ppm and an operating range for safety applications up to 2,000ppm. The sensors are designed for use in both fixed site and portable instrumentation.

The SO2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification

Application notes

Download Toxic Application Notes – see application notes for full details.

Sensor Specification Summary

Compare Alphasense Sulfur Dioxide sensors – sensor specification summary.

Data Sheets
File Description Type
SO2-D4 Data Sheet Download
SO2-BF Compact, filtered Data Sheet Download
SO2-BE Compact, high-concentration Data Sheet Download
SO2-B4 Compact, 4-electrode, low-ppb Data Sheet Download
SO2-AF Small, filtered Data Sheet Download
SO2-AE Small, high-concentration Data Sheet Download
SO2-A4 Small, 4-electrode, low ppb Data Sheet Download