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