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