Patent
Improvements in or relating to meters
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TLDR
In this paper, an inductive electricity meter or reversible fluid flow meter has a disc 1 whose rotation occasions photocells 2, 3 to produce output signals from which a control unit 5 generates pulses each corresponding to a revolution of disc 1.Abstract:
An inductive electricity meter or reversible fluid flow meter has a disc 1 whose rotation occasions photocells 2, 3 to produce output signals from which a control unit 5 generates pulses each corresponding to a revolution of disc 1. The control unit 5 also divides up the pulses according to the direction of rotation and directs them towards either forward counter 6 which records consumption of electricity or reverse counter 15 which records fraudulent reversal of disc 1. The meter has two single-pulse stores 14 and 20 to ensure that the amounts registered by counters 6 and 15 are maintained correct even when spurious single-reverse pulses occur, caused by inherent design characteristics of the meter.read more
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Patent
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