Energy meters are the basic part to measure the power consumption. Digital frequency meter is a general purpose instrument that displays the frequency of a periodic electrical signal to an accuracy of three decimal places. The model 6000a phase meter replaces the very popular model 6000. By using appropriate transducers, it is also possible to measure high currents and voltages with the 3phasecurrent meter. It is used everywhere, no matter how big or small consumption it is. Pdf this paper presents a simple yet effective method to determine the phase angle difference across any load connected to the supply.
Type of metering point like grid, secondary transmission, primary and local distribution. Digital filter phase fluctuations from independent clocks. The signals to be fed must be of the same frequency. A simple digital phase meter using the dualslope principle is described. A phase shift is a time difference between two signals of the same frequency. In other words, the algorithm can process a serial signal using only two consecutive data points.
To study the construction and working of single phase energy meter and to find out energy consumed in 30 minutes. The fluke 9040 is effective for measuring phase rotation in all areas where three phase supplies are used to feed motors, drives and electrical systems. For multiple meter bases, all services except single family under one roof, meter bases must be clearly and permanently marked with ele. Built in capability for balanced loads view graphs and generate reports. The meter platform will measure energy accurately over varying environmental conditions. The unit automatically selects the proper range for both amplitude and phase. Among digital phase meters, the conventional digital phase meter, made from a gated counter as shown in fig. Phase measurement using wave amplitude standardization for both analog and digital measurements.
In this paper we present a digital phase meter that is capable of measuring phases from signals with multiple heterodyne frequencies. A phase detector is a mixerlike circuit that puts out a signal that is proportional to the phase difference between two input signals of the same frequency. The input signal of each input is filtered to minimize the harmonic distortion that may be present. Low latency output for laser phaselockingarmlocking. Digital receiver phase meter a commercial digital receiver is modified into a twochannel phase meter. View and download mastech ms2203 user manual online. A single phase meter is used in alternating current systems.
Overview of the lisa phasemeter daniel shaddock, brent ware, peter halverson, robert spero and bill klipstein. The filtered sine wave is then converted to a square wave. The energy is the total power consumed and utilised by the load at a particular interval of time. Manufacturer of phase rotations meter ac meter voltage detector htc, 3 phase rotation meter htc offered by sunshine instruments, coimbatore, tamil nadu. The three phase meter is constructed by connecting the two single phase meter through the shaft. Simple digital phasemeasuring algorithm for lownoise. Energy meter or watthour meter is an electrical instrument that measures the amount of electrical energy used by the consumers. Abstracta microcomputercontrolled measuring instrument for phase angle measurement in low frequency range is described. Phasemeter definition is a device for measuring the difference in phase of two alternating currents or electromotive forces. Based on microprocessor technology, the pme20ph is an instrument designed mainly as a phase angle meter, although other parameters, such. The 3phasepower meter pcend10 is able to perform current, voltage and power measurements in 3phase systems.
Battery general description threephase digital power clamp meter is a handheld aptitude meter with power measurement, it is incorporated current meter and power measurement. Three phase whole current trivector energy meter er300p. Digital phase meter circuit intermetall, division of ditti. A measuring system with three multipliers is required for 4wire three phase systems of unbalanced load with neutral conductor n. The easy, allinone phasing voltmeter with numerous applications. The threewattmeter method can also be used in the absence of a neutral conductor if an artificial neutral is available. Hastings warrants the catalog number 6702 digital voltage phase meter to be free from manufacturing defects, for a period of one year from the date of purchase to the original owner. Arm based smart single phase energy meter with automatic bill generation and sms alert, rohit upadhyay, a. The 3phasepower meter pcend10 was designed for panelmounting in 92 x 92 mm panel cutouts. The gima series offers accurate, highspeed, continuous measurements irrespective of harmonics and waveform interruptions. The meter which is used for measuring the energy utilises by the electric load is known as the energy meter. Digital meters munhean industrial electrical solutions.
The model 175a digital phase angle meter operates by measuring the elapsed time between the zero crossover of input 2 versus input 1. Meter bases for commercial services and 320 singlephase residential services shall be provided with lever bypass handles. At the discretion of the company, units returned under this warranty shall be either repaired or replaced at no cost to the customer. With included power log software fluke 345 power quality clamp meter with a bright color display to analyze the harmonic spectrum, a lowpass filter to remove high frequency noise, and a high emc immunity design, the fluke 345 is ideal for. Abstractthis paper describes a simple digital phase meter using the dualslope principle.
Hpl energy meter hpl energy meter latest price, dealers. Purpose the user manual contains all the information required for application of the meters for. The signal waveform is converted to trigger pulses and applied continuously to an and gate, as shown in fig. This electronic meter does not possess any rotating parts, and the.
Gravitational wave information is contained in the phase of this beat note. The meter which is used for measuring the power of three phase supply is known as the three phase energy meter. Nasas jet propulsion laboratory, pasadena, california the software of a commercially available digital radio receiver has been modified to make the receiver function as a twochannel lownoise phase meter. This algorithm can be easily applied to realtime signal processing. A singlephase meter is used in alternating current systems. Datakom da0303 digital ammeter panel 3 phase, 170275v power supply voltage testers. End applications like domestic, commercial and industrial. Metsepm1200 pm1200 power meter with energy and demand. Digital panel meters avf meter manufacturer from pune. Er300p is a trivector meter which integrates several functions and replaces various equipment for metering energy parameters.
Each gima unit can be used as a singlephase or a threephase meter. It gives a digital output number independent of the input frequency 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. An electric meter or energy meter is a device that. The meter is based on reliable, field proven digital multiplication measurement technique. A measuring system with three multipliers is required for 4wire threephase systems of unbalanced load with neutral conductor n. Digital phase meter the simplest technique to measure the phase difference between two signals employs two flipflops. Alpha meter il424001s 8 4 wire delta meters circuit closing device 1 2 3 n 3 2 1 n form 10s form 8s application 3 phase, 4 wire delta, 3 cts, no pts 20e01 wiring is different than a traditional form 8 meter form 10a form 8a application 3 phase, 4 wire delta, 3 cts, no pts 23e01 1 2 3 n 3 2 1 n wiring is different than a traditional form 8. Epa10 122 491 discloses a digital phase meter circuit for determining the phase difference between the edge of a pulse of a first clock signal and the edge of a pulse of a second clock signal in the sampling interval of two pulses of the second clock signal. A digital meter relay consisting of a digital panel meter with a comparison function using digital switches has been developed. Each phase is 120 degrees out of phase with the others. The focus meter was designed to be a lowcost, solidstate, kwhonly meter as an alternative metering and amr platform to the induction meter. Singlephase dinrail kwh energy meters drk1ppo240 singlephase 230v 15a direct connected, pulse output this innovative two din module kwh energy meter measures the real consumption of active energy to class 2 accuracy with a resolution of 0.
It measures volts, amps, frequency, active power, apparent power, reactive power, active energy, reactive energy, power factor, amp demand, apparent power demand, active power demand, maximum amp demand, maximum apparent power demand, maximum active power demand, and thd on voltages and currents. Energy meter is an instrument which measures electrical energy. Implementation of a singlephase electronic watthour. We sometimes need to know how much phase shift is present.
For more field useful purpose, rs485 digital output is a necessary equipped. Over the past several years, nai has worked hard to manage component issues, but has now encountered multiple component obsolescence issues which cannot be managed. The fluke 9040 is a rotary field indicator and can provide clear indication of the 3 phase via an lcd display and the phase rotation direction to determine correct connections. Pdf development of a digital phase angle meter researchgate. Technical specifications for three phase energy meter the equipment covered by these broad specifications shall conform to the requirements stated in latest editions of relevant indian iec standards and. Digital 3phase ac electric lcd voltage meter multifunction voltage current meter voltmeter ammeter smart instrument. 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. As a result, we have found it necessary to discontinue the 2250 and 2251 phase angle voltmeters which you may have previously purchased. A pulse of 1 s is applied to the other terminal, and the number of pulses counted during this period indicates the frequency. Meter bases shall include a neutral conductor except multigang. This paper presents a single phase electrical energy meter based on a microcontroller from microchip technology inc. Implementation of a singlephase electronic watthour meter using msp430afe2xx rev.
The total energy is the sum of the reading of both the elements. Programmable triple displays digital ac single phase power. It counts the number events occurring within the oscillations during a given interval of time. Type of display like analog or digital electric meter. New digital phase meter concept and its application. Datakom da0303 digital ammeter panel 3 phase, 170275v. Using the latest digital techniques and optimally designed analog front end, the model 6000a outperforms any other phase meter on the market today. As the preset period gets completed, the value in the counter. The two square waves are compared by the logic circuit. The actual zerocrossing time is indicated by the open squares. Technical like three phases, single phase, ht, lt and accuracy class meters. Electrical energy meters principles and applications. A phasemeter measures the relative phase of two electronic signals. The simpson gima series digital power meters provide a single source of instrumentation for all measurement and metering requirements.
Digital meter leading manufacturer of av33 1 phase voltamp meter, amp19n multispan digital panel meter, av33 digital laboratory meter, avf19n multispan digital avf meter, avf19n vaf meter and avh 14n digital vaf meter from rajkot. It gives a digital output number independent of the input frequency or the clock. Digital frequency meter frequency measurement high. This meter is used for commercial metering and for metering of small industrial loads. Digital meter av33 1 phase voltamp meter manufacturer.
Pdf a single phase microcontroller based energy meter. First, the signals must be shaped to a square waveform without any change in their phase positions, by the use of a zero crossing detector. Phasemeter definition of phasemeter by merriamwebster. Here we discuss the construction and working principle of induction type energy meter. It is used in domestic and industrial ac circuit for measuring the power consumption.
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