Apparatus whose measurement means consists solely of electronic components, measures the power taken by {HEAD ~ an electrical load} connected to an alternating source of electricity supply in {TAIL ~ such a manner} that the power sensed or energy accumulated is in agreement with the same measurements as performed by a conventional rotating disc electromechanical meter 
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Apparatus whose measurement means consists solely of electronic components , measures the power taken by { HEAD ~ an electrical load } connected to an alternating source of electricity supply in { TAIL ~ such a manner } that the power sensed or energy accumulated is in agreement with the same measurements as performed by a conventional rotating disc electromechanical meter
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 OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH