1
R Stephen Carr, Julius N Dalzell, J Fred Holmes, John M Hunt: Home energy monitoring and control system. Chernoff Vilhauer McClung & Stenzel, February 17, 1987: US04644320 (162 worldwide citation)

A home energy monitoring and control system for monitoring the electrical energy usage of a plurality of appliance loads. The system includes an energy monitor unit for each appliance load which plugs into a standard AC wall outlet and monitors power consumption and also has a power line transmitter ...


2
AN APPARATUS AND A METHOD FOR DETERMINING A MEASUREMENT ERROR OF A DISPLACEMENT VOLUMETRIC METER, A METER MONITORING DEVICE, AND A METER MEASUREMENT ERROR DETERMINING DEVICE. May 2, 2019: US20190128720-A1

Apparatus for determining a measurement error of a displacement volumetric meter, the meter having bellows which in use expand and contract to transmit a fluid. The apparatus including a transducer operable to detect movement of the bellows and to generate a signal which varies in accordance with th ...