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