Digital multimeter working principle electrical a2z. The advantages of highly functional threephase meters for digital energy measurement have been demonstrated in north americas commercial and industrial. Apr 17, 2014 energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device. The dme series energy meters can be integrated with. Digital energy meters by the millions analog devices.
What is the solution for the drawbacks of commonly used energy meters. Digital meters frequently asked questions origin energy. When measurements are performed with upstream transformers, the displayed energy value must be multiplied by the transformation ratios. Jul 25, 2018 energy meters are the basic part to measure the power consumption. By implementing the watthour meter, we can know how much amount of electrical energy is used by a consumer or a residence or an electrically powered. Electronic meters measure energy using highly integrated components or other customized integrated circuits. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers.
An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or. Digital meters, sometimes called smart meters or advanced meters, are devices that automatically record electric and water use, then electronically report that information to the utility company at regular intervals. If a meter is used in combination with a current transformer. Digital multimeter working principle analyse a meter. Electrical energy meters principles and applications. The working principle of an electronic energy meter is a device that measures the electronic energy consumed usually in kwh. Indias most preferred load monitor for network reliability and consumption monitoring led display type. If the analog meter is bidirectional it will spin backwards when your solar electric system is pushing extra electricity. To understand why we must first look at the difference between an energy meter and a smart energy monitoring system like the new smappee plus, and see just how a smart energy monitoring system can improve peoples lives. Similar to the analog meters, voltage and current transducers are connected to a high resolution adc. This course on electricity meters is comprised of the following modules.
Digital meters are introduced, as are types of voltmeters and ammeters operating on different techniques of analogto digital signal converters. Dmk and dmg series digital multimeters since units. This electronic meter does not possess any rotating parts, and the. Energy meter an electricity meter or energy meter is a device that measures the amount of electric energy consumed by a residance,business or an electrically powered device. While in digital electricity meter, percentage error could be as low as 0. Mar 27, 2016 there are basically 3 types of energy meters. The following is a basic explanation of how bidirectional metering works. A second terminal block between the current transformer and the meter simplifies service work. In fact, it has been predicted that more than 10 million digital singlephase. The idea of designing the digital household energy meter is due to the basis that it. Calculate the number of revolutions made by it, when connected to a load carrying 40 a at 230v and 0. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Energy meter working principle and construction electronic. The meter sends this information back to your energy retailer remotely, so no one needs to visit your property to read the electricity meter.
Digital multimeter block diagram, working principle. This is all about types of energy meter and their working. Electronic energy meter is based on digital micro technology dmt and uses no moving parts. Several works on ami or smart metering leads to fig. A digital meter measures how much electricity youve used and when. A digital multimeter dmm is an instrument that can measure several basic electrical quantities and shows the measurement with a number in a display. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation.
The key parameters calculated during energy measurements are root mean square rms current and voltage, active and reactive power and energy, power factor, and frequency. The energy is the total power consumed and utilised by the load at a particular interval of time. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. This type of meter is already in use throughout victoria and is being rolled out in nsw, act, sa and qld. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. Electricity meters are typically calibrated in billing units, the most common one being the kilowatt hour. To investigate firsthand these headlines and issues regarding the adoption of smart meter systems, i decided to conduct an experiment with my family. Jul 02, 2018 block diagram, working principle and construction of digital multimeter in digital instruments video lecture of analog and digital instruments chapter in sub.
Jul 25, 2018 watthour meter is in fact a measuring device which can evaluate and records the electrical power passing through a circuit in a certain time. Mar 28, 2017 the function of recording or registering mechanism is to record continuously a number on the dial which is proportional to the revolutions made by the moving system. Electronic meters need for prepaid energy meter system. Energy meters are the basic part to measure the power consumption. You can recharge the electricity balance through this system, just by sending a sms. Features of digital multimeter digital multimeter is the most advanced instrument that makes use of modern integrated circuits for making electrical measurements. These meters provide secure data that can show peak usage and isolate outages. In this project we are building a automated system by using arduino and gsm module. Electromechanical energy meters have been the standard for metering the electricity since billing began.
Digital multimeters are widely accepted worldwide as they have better accuracy levels and ranging from simple 3. Sep, 2011 an electric meter or energy meter is a device that measures the amount of electrical energy supplied to or produced by a residence, business or machine. Sep 03, 2017 analog meters also known as electromechanical are the most common, the simple meter spins forward when your using electricity. All multimeters measure ac and dc voltage voltmeter, ac and dc current ammeter, and resistance ohmmeter. Implementation of a singlephase electronic watthour meter. Utilities are one of the electrical departments, which install these instruments at every place like homes, industries, organizations, commercial buildings to charge for the electricity consumption by loads such as lights, fans, refrigerator, and other home appliances. Energy meter circuit detailed project with source code. So the eem is known as static energy meter in eem the accurate functioning is controlled by a specially designed ic called asic application specified integrated circuit. Handbook on electricity meters asiapacific economic cooperation. Pdf automatic energy meter reading using smart energy meter. It is often incased in glass and has a disk that rotates that. It is used everywhere, no matter how big or small consumption it is. Whats the difference between an energy meter and a smart.
Thirdly, the user friendly display in the digital meters makes energy reading from time to time very easy. Bidirectional metering is available to customers who install renewable fuel generators such as solar, wind, hydro or biomass sources and operate the generator in parallel with their electric companys electrical system. Secondly, the orientation problem associated with electromechanical energy meter is completely a nonissue in a digital energy meter. Prepaymentprepaid energy meter introduction and working. Pdf electronic energy meter with remote monitoring and billing. It is used in domestic and industrial ac circuit for measuring the power consumption. The meter is provided with a field to which entries can be made for this purpose ct or vt factor.
The software supports calculation of various parameters for singlephaseenergy measurement. Here we discuss the construction and working principle of induction type energy meter. Innovative energy olutions digital energy meters by the millions. Jun 30, 2018 working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation and measurement for electrical, electronics, extc. What is the working principle of energy meter answers. The watthour meter works on the induction principle. Presented here is a simple energy meter using analog devices ade7757 chip for singlephase, 2wire phase and neutral systems used in households. Aug 30, 2017 as wireless energy meters become more common for homes in the u. What are the advantages and disadvantages of usual energy meters. Pdf a single phase microcontroller based energy meter. Pdf the energy metering technology used presently in nigeria is not highly reliable and.
In september, 2009, a neighbor mentioned that our utility had just initiated an optin program that featured a new, digital meter and a timeofuse tou rate. Electric utilities use electric meters installed at customers premises for billing and monitoring purposes. An electricity meter, electric meter, electrical meter, or energy meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device. Electromechanical type the electromechanical induction meter operates by counting the revolutions of a nonmagnetic, but electrically conductive, metal disc which is made to rotate at a speed pro. But these are now being gradually replaced by electronic digital energy meters. The digital energy meter has recently passed the sevenyear mark and the study results are so promising that some utility boards have stopped purchasing electromechanical meters. A list of some manufacturers of electronic voltmeters, ammeters, and oscilloscopes is. The conventional method of electricity billing involves a person from the distribution unit reading the number of units of electricity consumed in the energy meter, conveying this information to the distribution unit and then preparing the bill according to the units consumed for a fixed amount of time. Pdf it is undoubtedly that in the future, energy would cost more as the direct. Prepaid electricity energy meter is a good concept in which you can recharge its balance, like we do in our mobile phones. Digital electronic energy meters digital signal processor or high performance microprocessors are used in digital electric meters.