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North American domestic analog electricity meter. Electricity meter with transparent plastic case (Israel) An electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device over a time interval.
The Tweet-a-watt [13] is a hacked version of the standard Kill-A-Watt Plug in Power Meter. By piggybacking on the device's on-board LM2902N op-amp chip, the creator was able to get readings for voltage and current and transmit to a computer, which then sent this to Twitter via handle @tweetawatt. [ 14 ]
High-precision laboratory measurements of electrical quantities are used in experiments to determine fundamental physical properties such as the charge of the electron or the speed of light, and in the definition of the units for electrical measurements, with precision in some cases on the order of a few parts per million. Less precise ...
The C12.20 standard established the physical aspects and performance criteria for a meter's accuracy class. It refines certain details in ANSI C12.1 and ANSI C12.10. The existing ANSI accuracy classes for electric meters are: Class .5 - having ± 0.5% accuracy. Class .2 - having ± 0.2% accuracy. Class .1 - having ± 0.1% accuracy.
electricity meter: electrical energy used electrometer: electric charge electronic tuner: pitch of musical notes ellipsometer: refractive index, dielectric function, thickness of thin films eudiometer: change in volume of a gas mixture following combustion evaporimeter: rate of evaporation fathometer: ocean depth feeler gauge: gap widths
Electricity meter, a device for measuring electricity usage Smart meter, an electrical meter that records consumption of electric energy and communicates information to the utility for monitoring and billing; Gas meter, a specialized flow meter used to measure the volume of fuel gases such as natural gas and propane; Water meter, a device for ...
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Cos Phi Meter: Measures the power factor Distortionmeter: Measures the distortion added to a circuit Electricity meter: Measures the amount of energy dissipated ESR meter: Measures the equivalent series resistance of capacitors Frequency counter: Measures the frequency of the current Leakage tester: Measures leakage across the plates of a ...