What is the working principle of sox, nox analyzer?(opacity monitor)
Otherwise how to measure the sox,nox?

Answer Posted / roshan t

SOx NOx meters have one reference gas cylinder on which first they calibrated then sample gas passes through this analyser where SOx gas volume measures against voltage in m3/kg or in ppm
also if u want then multiply m3/kg by 24.75 and divide it by its molecular weight u got ppm value

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