{HEAD ~ The present invention} generally relates to {TAIL ~ combustion monitoring systems}, and deals more particularly with a device implemented method for monitoring the accumulation of unburned particulates in an exhaust duct employed to exhaust combustion gases from combustion system 
generally relates to
{ HEAD ~ The present invention } generally relates to { TAIL ~ combustion monitoring systems } , and deals more particularly with a device implemented method for monitoring the accumulation of unburned particulates in an exhaust duct employed to exhaust combustion gases from combustion system
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