The unburned particulate accumulation within the exhaust for a combustion system, such as the liner of a flue for a stove, is monitored by a circuit which receives a temperature indicating {HEAD ~ signal} from a thermo couple mounted within {TAIL ~ the flue} 
The unburned particulate accumulation within the exhaust for a combustion system , such as the liner of a flue for a stove , is monitored by a circuit which receives a temperature indicating { HEAD ~ signal } from a thermo couple mounted within { TAIL ~ the flue }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL