Gas analysis specialist Servomex has launched its new SERVOPRO SO2 analyser for accurate monitoring of sulfur dioxide.
It’s measurement is based upon UV radiation of the sulfur dioxide molecule using light in the range of 190-230nm. The molecule absorbs the light into an excited state and then decays back down to the ground state, where a photomultiplier tube (PMT) converts the signal into SO2 concentration.
To prevent interference and quenching from polycyclic aromatic hydrocarbons (PAHs) such as naphthalene, the SERVOPRO SO2 is fitted with a “kicker” to remove them from the sample before analysis, ensuring a reliable, accurate reading.
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