The secondaries of the two transformers are connected together with rectification and filter circuitry to sum the secondary voltages and to yield {HEAD ~ an output voltage} representative of the phase modulation and thereby of {TAIL ~ the flow rate} 
The secondaries of the two transformers are connected together with rectification and filter circuitry to sum the secondary voltages and to yield { HEAD ~ an output voltage } representative of the phase modulation and thereby of { TAIL ~ the flow rate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL