{HEAD ~ The set up circuit} automatically sets up the welding machine in response to {TAIL ~ the sensor} 
{ HEAD ~ The set up circuit } automatically sets up the welding machine in response to { TAIL ~ the sensor }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL