Monitoring device and method for accurately determining and recording present demand of electrical energy
First Claim
1. A device for monitoring peak demand electric usage from an electric usage meter having a rotating disc and a peak demand meter integrated therewith, said peak demand meter being mechanically activated and designed to be reset if said peak demand electric usage is not maintained for a predetermined continuous time interval, said device comprising means for sensing rotation of said disc, timing means, and a printing calculator containing counting, memory and printing means, said counting means being adapted to receive signals from said sensor and to count rotations of said disc, and said memory means retaining a cumulated total of said counted rotations and wherein said printing means is adapted to print said cumulated total of rotations after a period of time no longer than said predetermined continuous time interval of said peak demand meter, whereby the number of rotations during said period of time can be ascertained;
- and said printing means being adapted to be activated by said timing means to print out the time together with said cumulated total of rotations whereby electric usage for said time period can be ascertained and wherein determination of electric usage during said period of time by said device determines the accuracy of the peak demand meter.
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Accused Products
Abstract
A monitoring device and method for determining the present demand of electrical energy consumed over a predetermined time period which includes an adjustable reflective scanner or sensor mounted exteriorily of an electric meter for sensing and determining the speed of the rotating disc of a conventional electric meter. The arrangement is such that the scanner or sensor detects the revolutions of the meter disc and emits a signal or signals which are amplified and fed into a counting device which includes a memory and in conjunction with a printer prints the time of day, the date (at midnight) and the number of revolutions of the rotating meter disc which is stored as recorded in memory for a given unit of time. The counting device, memory and printer are embodied in a printing calculator interfaced with timing and scanning means.
45 Citations
12 Claims
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1. A device for monitoring peak demand electric usage from an electric usage meter having a rotating disc and a peak demand meter integrated therewith, said peak demand meter being mechanically activated and designed to be reset if said peak demand electric usage is not maintained for a predetermined continuous time interval, said device comprising means for sensing rotation of said disc, timing means, and a printing calculator containing counting, memory and printing means, said counting means being adapted to receive signals from said sensor and to count rotations of said disc, and said memory means retaining a cumulated total of said counted rotations and wherein said printing means is adapted to print said cumulated total of rotations after a period of time no longer than said predetermined continuous time interval of said peak demand meter, whereby the number of rotations during said period of time can be ascertained;
- and said printing means being adapted to be activated by said timing means to print out the time together with said cumulated total of rotations whereby electric usage for said time period can be ascertained and wherein determination of electric usage during said period of time by said device determines the accuracy of the peak demand meter.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
Specification