{HEAD ~ Phase detector} for a vortex flowmeter using ultrasonic transducers connected to separate transformers for {TAIL ~ phase detection} 
{ HEAD ~ Phase detector } for a vortex flowmeter using ultrasonic transducers connected to separate transformers for { TAIL ~ phase detection }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL