A data processor is connected to {TAIL ~ the source}, the power control apparatus and the temperature sensors and control the amount of heat in accordance with {HEAD ~ a desired heating pattern} 
A data processor is connected to { TAIL ~ the source } , the power control apparatus and the temperature sensors and control the amount of heat in accordance with { HEAD ~ a desired heating pattern }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD