if {TAIL ~ a difference} between said second intake temperature and said first intake temperature is less than {HEAD ~ a calibration temperature change}, waiting for a period of said temperature sampling interval 
if { TAIL ~ a difference } between said second intake temperature and said first intake temperature is less than { HEAD ~ a calibration temperature change } , waiting for a period of said temperature sampling interval
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH