Unburnt Combustible Gas Analyser is mainly designed for carbon monoxide and hydrogen gas. The Gas Analyser offers simultaneous measurement of oxygen and oxidisable components carbon monoxide or hydrogen in emissions of combustion plants. The Gas Analyser signals the measurement of the carbon monoxide or hydrogen selective electrode that correlates well with the carbon monoxide -concentration in the exhaust gas. Unburnt Combustible Gas Analyser requires no mechanically moved parts and functions in fast response time.