What is the working principle of energy meters measure. The meters offer value for the demanding needs of your energy monitoring and cost management applications. To measure the light accurately, a lux meter is a very suitable device. Multiphase metering, and a handbook for providing the users, manufacturers and. Principles for the evolution of net energy metering and rate design share this document provides a consensus view of solar advocates for regulators and stakeholders considering rate design and compensation for distributed solar generation, including potential alternatives to net energy metering. Venturimeter principle, construction and working with. In many cases, this is done from a car, where the meters dial is photographed using a camera with a telelens. Symbol of power meter the traditional analog wattmeter is an electrodynamics instrument. The working of venturimeter is based on the principle of bernoullis equation. Now the lcr meter is used to measure the voltage and the current across the dut. There are four main parts of the operating mechanism i driving system ii moving system iii braking system.
The measured rotation can be used to calculate the value of solution concentrations. Energy meter works on the same principle as the induction motor. The aim of this project is to design a sample meter can accurately display real voltage. Procedure for calibration and testing of singlephase energy meter. Threephase ctpt operated keypad energy meter operation. Faradays law of electromagnetic induction is the key principle applied to magnetic flowmeter operation. Basic principles of energy building energy auditing course page 2. In all induction meters we have two fluxes which are produced by two different alternating currents on. Ultrasonic meter basics ultrasonic gas flow meters operate on the transittime measurement principle.
Electrical energy is measured in kilo watthours kwh by this energy meter. The vibration, though it is not completely circular, provides the. Give the connections as per the circuit diagram above. Still i will try my best to sort out different types of energy meters in some simple manner. In some areas, the meter reader must walk to each meter, which takes a lot of staff time. If one uses one kilowatt in onehour duration, one unit of energy gets consumed. The energy is the total power consumed and utilised by the load at a particular interval of time. What is the working principle of energy meter answers. It has a rotating aluminium wheel called ferriwheel and many toothed wheels. Fundamental principles of gas turbine meters john a. Basic theory of clamp meter to measure rms of current wave. The digital photo is then inspected at a central location, by a person who enters the number into a computer. Applicaton for electric meter installation questions or comments.
Jul 25, 2018 the principle of working and construction of induction type meter is very simple and easy to understand thats why these are widely used in measuring energy in domestic as well as industrial world. All meters in the pm2100 series range comply with class 1, or class 0. Digital multimeter working principle electrical academia. The conventional mechanical energy meter is based on the phenomenon of magnetic induction. Design and implementation of wireless energy meter system. A simple capacitive power supply for the msp430 energy meter appropriate values of resistor r22 and capacitor c49 are chosen based on the required output current drive of the power supply. Meanwhile, the problem of the distorted current waveform from loads need to be considered. Morris oxford auckland boston johannesburg melbourne new delhi. Flowmeters are used in fluid systems liquid and gas to indicate the rate of flow of the fluid. Generally speaking, measuring conductivity is a quick and easy way of determining the ionic.
Nv energy proudly serves nevada with a service area covering over 44,000 square miles. C to the pressure coil circuit by means of phase shifting transformer. We also provide natural gas to more than 145,000 customers in the renosparks area. An aluminium disc is placed inside a magnetic core with two limbs. Here you find the detailed explanation of the plumeasuring principle delta p 0 with all benefits. There are several types of energy meters single phase induction type energy meter are very commonly used to measure electrical energy consumed in domestic and commercial installation. The basic unit of power is watts and it is measured by using a watt meter. Electronic meters need for prepaid energy meter system. Working principle and construction of energy meter video lecture of measurement of capacitance chapter in subject electronic instrumentation.
Pdf a single phase microcontroller based energy meter. The oval rotor principle has proven to be a reliable and highly accurate method of measuring flow. The electromechanical induction meter operates by counting the revolutions of an aluminium disc which is made to rotate at a speed proportional to the power. The demand for power has increased exponentially over the last century.
The first to appear was electromechanical, variously called a disctype, induction or ferraris meter. Even though there are numerous designs on the market today, the principle of operation remains the same figure 1. Calibration and testing of singlephase energy meter. There are 2 fundamentally different types of energy meter presently in use. Implementation of a singlephase electronic watthour meter. The porosity of the glass membrane decreases with the continuous use that decreases the performance of the probe. Overview hxe34kp three phase four wire prepaid keypad meter is designed for the purpose of prepayment. A density meter, also known as a densimeter, is a device that measures the density. This section summarizes the principles and features of ultrasonic flow meters.
Ultrasonic flow meters have been working successfully in industrial. The overall working principle of ph sensor and ph meter depends upon the exchange of ions from sample solution to the inner solution ph 7 buffer of glass electrode through the glass membrane. Energy meter an energy meter is a device that measures the amount of electrical energy consumed by a residence, business, or an electrically powered device. Displacement meters measure volume directly through periodic filling and emptying of one or more measurement chambers. A mass flow meter operating on the coriolis principle contains a vibrating tube in which a fluid flow causes changes in frequency, phase shift or. The conductivity meter a typical conductivity meter applies an alternating current i at an optimal frequency1 to two active electrodes and measures the potential v. Any basic meter has a potential difference across its terminals when a fullscale current flows through it. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers.
Among the many communities we serve are las vegas, renosparks, henderson, elko. Also how does the working of clamp meter compare to that a current transformer any knowledge would be helpful. The basic principle of the ph meter is to measure the concentration of hydrogen ions. Along with the smooth oval rotors, exceptional repeatability and. The conductivity meter then uses the conductance and cell constant to display the conductivity. The three phase energy meter has two discs mounted on the common shaft. Lcr meter working principle and uses science struck. Micro motion elite coriolis flow and density meters. Meter readers find it difficult to collect the readings from remote areas. A digital multimeter much like an analog meter, it is able to read voltage, current, and resistance. Hi friends, in this article, i am going to discuss about the lux meter woking principle and its application what is lux meter. The most basic principle of how density is calculated is by the formula.
Applicaton for electric meter installation questions or. 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. Measurement range of ph electrode is decent that is from 0. In the release condition, pulse output potential is equal to 0. What is the solution for the drawbacks of commonly used energy meters. If enough heat is removed from liquid water at 0oc, it eventually turns into the solid we call ice. In general, handheld chlorophyll meters measure absorbance by the leaf of two different. This electronic meter does not possess any rotating parts, and the. The megger insulation tester is an instrument used for measuring high resistances of the order of mega ohms and for testing the insulation resistance megger working principle. It is used in domestic and industrial ac circuit for measuring the power consumption. Successful completion of tasks covered in the textbook can be documented by a certificate of completion included in the textbook. Energy meters are the basic part to measure the power consumption. The magnitude of the impedance can be calculated from the ratio of these two quantities.
Please use one of the following formats to cite this article in your essay, paper or report. The porosity of the glass membrane decreases with the continuous. This meter works on the same principle as the induction motor. Electrical principlescorrespondence version page 2 5 to increase the energy per unit time delivered to the power plant, you must increase the number of buckets andor increase the amount of energy per bucket. Tds100 series ultrasonic flow meters ultrasonic heat meters ultrasonic industrial water meter use lowvoltage and multi pulse transit time principle, and. Principle wem monitors the energy consumption for a single phase supply. Its main functions include energy measurement, data display, communication, prepayment, contactor. In all these processes, accurate measurement of flow is the prerequisite. Plu measuring principle delta p 0 servo controlled. However, measuring conductivity in waste water, industrial effluents, etc. All fluid meters, however, consist of two distinct parts, each of which has different functions to perform. Energy measuring principle heat or energy flow meters are designed to measure heat consumption, heat loss, or energy available within a flow stream. The wireless energy meter product specification is the energy meter with increased functionality of a single phase handheld module monitoring system. From a circuit perspective, you are increasing the current andor voltage.
Meter testing equipments, laboratory planning and set up by. In order to accurately measure the electronic energy used for a electronic energy meter, suitable hardware and software have to be designed. Principles for the evolution of net energy metering. Ultrasonic flow meters that use the doppler shift are called reflection or doppler flow meters. Polarimetry measures the rotation of polarized light as it passes through an optically active fluid.
A specifically designed program for da afghanistan breshna sherkat dabs. Single and three phase wattmeters and energy meters. The total energy consists of pressure energy, kinetic energy and potential energy or datum. Coriolis mass flow meter working principle mass flow meters are the types of flow meters which are mainly employed in massrelated processes such as chemical reactions, heat transfer, etc. Daniel measurement and control white papersfundamentals of orifice meter measurement page 1 fluid meters are divided into two functional groups one measures quantity positive displacement. It states that in a steady, ideal flow of an incompressible fluid, the total energy at any point of the fluid is constant. It consumes a small amount of power, typically around 2 watts. Fluid friction is a resultant of the flowing gas molecules crossing the surface of the turbine meter impeller and. 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. The diference between the money collected for fuel and purchased power costs bter and the actual costs for the fuel and purchased power. What i have in mind is that wire creates the changing flux that induces voltage in the meter.
Ultrasonic flow meter ultrasonic meters are velocity meters by nature. Coriolis mass flow meter working principle coriolis. Meter testing equipments, laboratory planning and set up. Working principle of vortex flow meter vortex meters can be used for a wide range of fluids, i. The torque of both the elements is added mechanically, and the total rotation of the shaft is proportional to the three phase energy consumption. We pass an ac voltage through a dut device under test. Voltmeter working principle, voltage sensitivity, types. Ohms law states that voltage across a resistance is directly proportional to the current passing through it. It is used everywhere, no matter how big or small consumption it is. Design and implementation of wireless energy meter system for monitoring the single phase supply. Note down the reading of two meters in a given period of time, say 2 minutes. A polarimeter consists of a polarized light source, an analyzer, a graduated circle to measure the rotation angle. The spad series has been used for various kinds of plants and its applications are still growing. Design and implementation of wireless energy meter system for.
Threephase ctpt operated keypad energy meter operation manual shenzhen inhemeter co. The electronic energy meter is also better protected against tampering than its mechanical predecessor, and units for prepaid operation e. Working principle of vortex flow meter instrumentationtools. A ph meter provides a value as to how acidic or alkaline a liquid is. Megger working principle is based on the working principle of moving coil instruments, which states that when a current carrying conductor is placed in a magnetic field, a mechanical force is experienced by it. As a practical application of the coriolis effect, the coriolis mass flow meter operating principle involves inducing a vibration of the flow tube through which the fluid passes. How does a coriolis mass flow metercontroller work. This paper deals with the measurement of power and energy using arduino. Fundamental principles of diaphragm meters robert bennett american meter company introduction the first gas company in the u. Testing has shown that a singlepath, centerline meter is much more sensitive to flow profile changes than the 4path chordal meter. So energy meters measure the rapid voltage and currents, calculate their product and give instantaneous power. Prepaymentprepaid energy meter introduction and working. That is, they measure the velocity of the gas within the meter body. They are to be seen as first choice, subject to verification to cover the requirements of a particular application.
Ultrasonic flow meter flow knowledge keyence america. Dssd331dtsd3419d three phase high accuracy gateway meter dssd331dtsd3419a9b9c three phase fundamental waveharmonic wave gateway mete dssd331dtsd341mb4m three phase magnetic field detection special energy meter. Types of energy meters and their working principles elprocus. So energy meters measure the rapid voltage and curren. Compensation for your excess kilowatthours that are pushed back to the power grid. In principle, the flow of a given liquid in a pipe is obtained. Operating principles of the superconducting gravity meter gwr. The basic principle of induction type energy meter is electromagnetic induction. Here we discuss the construction and working principle of induction type energy meter. Aug 10, 2010 energy meter works on the same principle as the induction motor. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Various types of flow meters and flow sensors are available. Based on the flow of current, the ferriwheel rotates which makes rotation of other wheels. Basic concept for smart meter specification based on rfc.
The weakness of this type ph device has rigid shape, relatively big it requires reference electrodes and fragile the glass membrane part 1, 5,16,17. When alternating current flow though two suitably located coils produces rotating magnetic field which is cut by the metallic disc suspended near to the coils thus emf induce in the disc which is circulates eddy current in it. The ideal measuring principle for measuring fuel consumption. The flow profile is affected when blockage in front of the flow conditioner occurs, or there is contamination in the pipeline. The construction and principle of operation of single phase energy meters is explained below. The meter is provided with a field to which entries can be made for this purpose ct or vt factor.
Both the current and the potential are used to calculate the conductance iv. A digital multimeter dmm is a multifunctional meter that displays its electrical quantitative values on an lcd screen. This is why displacement meters are considered to be volumetric meters. Observatory superconducting gravimeter osg, electronics package and 4k refrigeration system shown above. The number of revolutions is thus proportional to the energy usage. Under the alternating current effect, the electromagnetic coils mounted on the measuring tube will make two parallel measuring tubes vibrating at a certain fixed frequency. Also remember that the conveyor belt and charge carriers. What is ph meter principle and how does a ph sensor electrode and ph meter used in quality control and manufacturing area a ph meter is used to determine the acidity or alkalinity of the solution. Comprehensive flow control knowledge located in one complete resource.
Electrical energy meters principles and applications. Even though there are several designs of ultrasonic meters on the market today, the principle of operation remains the same. Consistent with principles of good laboratory practice, calibration is performed with at least two. Jul 25, 2018 energy meters are the basic part to measure the power consumption. Dds102j1 single phase electronic energy meter register display ddsy102k3 single phase electronic type prepayment energy meter ddsy102k7 single phase electronic type microwireless energy meter. Digital multimeter principles is part of a comprehensive instructional package and is a must for all technicians, from contractors to maintenance staff.
This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. What are the advantages and disadvantages of usual energy meters. Connection of smart meter and electric company route a will be basically changed to adopt ip because external providers may use the meter data and can secure flexible expandability for future services, and it can reduce cost in long term by enabling multiple it vendors and manufacturers to enter. There are many basic types of energy meters that it is not an easy task to categorize them. Measuring leaf chlorophyll content with the konica. One carries a voltage coil so its flux is proportional to voltage, the second carries a current coil so its flux is proportional to current. A ph meter is a scientific instrument that measures the hydrogenion activity in waterbased. One avenue through which todays energy problems can be addressed is through the reduction of energy usage in households.
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