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Sulfur Dioxide

fgr4hwaYQhaCXv2IL60E8gRHoUkkPbVYCOJlcQZLo6cAlphasense 4-Electrode gas sensors operate using proven fuel cell technology.

The B4 series (4-electrode sensors) provides OEMs with reliable sensors for use in a number of high volume applications and especially Air Quality Networks where very low parts per billion (ppb) detection levels are required.

Strong signal levels combined with low zero current allows resolution to < 10 (ppb) and a wide operating range. The sensors are suitable for use in fixed installation sensing heads, portable safety instruments, urban/indoor air monitoring and stack gas analysers.

The B4 series of sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leak-proof housing is moulded with a colour coded top for ease of identification.

Application notes

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

Data sheets

Go to downloads page

File Name Description Type Download Link
SO2-B4 Compact, 4-electrode, low ppb Data Sheet
SO2-A4 Small, 4-electrode, low ppb Data Sheet


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Download Data Sheets

Get data on our sensors Download Data Sheets

Download Application Notes

Get technical information Download Application Notes


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