Sulphur Dioxide (SO₂)

Sulphur dioxide (SO₂) is a colourless gas with a sharp odour commonly produced by burning fossil fuels and smelting mineral ores. It is a major air pollutant and a significant contributor to the formation of acid rain. Monitoring SO2 is critical for power generation, metal processing, and chemical manufacturing industries to ensure compliance with environmental regulations and protect public health.

Signal Group’s state-of-the-art sulphur dioxide analysers are designed to provide accurate, reliable, and continuous monitoring of SO2 emissions. Our technology helps industries not only comply with stringent environmental standards but also optimise their processes and reduce emissions effectively.


Non Dispersive Infrared (NDIR) Multi-gas analysers are available in 1, 2, 3, 4 or 5 gas channel configurations, offering high levels of performance and flexibility. Options include CO, CO2, CH4, NO, N2O, SO2, HCl and O2.

low ranges E.g. 0-10 ppm CO

5 user-configurable ranges + autorange per channel

electronic pressure & temperature compensation

RS232 'AK' protocol, 4-20mA & 0-10VDC chart outputs

Partner with Signal Group for Effective SO2 Monitoring

Choose Signal Group’s sulphur dioxide analysers for their precision, durability, and ease of use. Our solutions are essential for businesses requiring detailed monitoring of SO2 to ensure environmental compliance and protect public health.

Contact us today to learn how our technology can support your emissions control and monitoring needs.