If we consider capacity for voltage measurement to be 0. With regard to supply, the solution covers the supply of new meters where the result of the maintenance service identifies a requirement to do so or at the end of asset life. It uses the same principle as a venturi nozzle, namely bernoullis principle which states that there is a. Temperature and sizedependent hamaker constants for. The latest proposed orifice and nozzle equations, complete with examples. Types of gas meters by operating principles include displacement, velocity, head, thermal, acoustic, and tracer. The symbol for megameter is mm and the international spelling for this unit is megametre. Sdo including sdo murree and patriata, 2 data supervisor control, 3 meter reading supervisors and 17 meter readers for allegedly recording bogus meter reading of the consumers in the. Ways to check the accuracy of my electric meter hunker. Reference manual 0082102004810, rev ba may 2014 flow test data book and flow handbook for wet gas flow measurement with conditioning orifice meter. The base unit for a megameter is meter and the prefix is mega. Without the ability to measure, it would be impossible to. Meter reading definition of meter reading by the free. The meter operator mop services solution includes the supply of meters, registration of meters, maintenance of meters and associated communications requirements.
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 electric utilities use electric meters installed at customers premises for billing and monitoring purposes. Scaled to x10, x100, x 1,000, 10,000 meter multipliers can be. Tables for the basic orifice factor are presented in appendix c of this book. Abebooks, an amazon company, offers millions of new, used, and outofprint books. Obviously, if your plant burns little gas, then it probably does not make sense to waste a dollar trying to save a dime. A meter, or metre, is the fundamental unit of length in the metric system, from which all other length units are based. To find the meter number, look for the words atlanta gas light company or atlanta gas light co on the gas meter. You can define a frequency schedule for a meterbased preventive maintenance pm record to specify how often work orders are generated from it. What is length instant conversions conversion tables rate conversions. A megameter is a unit of length or distance in the metric system. Mega denotes a factor of a million which means that there are 1,000,000 meters in a megameter. It usually shares a spot on the dial with at least one other function. Orifice meter constants handbook e2 gas, air, steam, oil and water revised to conform with a. This type is widely used in commercial and domestic gas service to measure the quantity of gas delivered to.
U389a and u389b electric meters for active energy applications the electronic electric meter registers energy consumption in threephase current systems. The flowrate scale for flowmeters with glass meter tubes is preferably applied directly on the meter tube. Codemeter is a license and digital rights management system with secure online shopping of licenses. Defining frequency for meterbased preventive maintenance. How the electric utility industry generates and delivers power to its customers covering basics, delivery, safety and generation.
Turn off all your appliances, then read the meter and make a note of the reading. Measurement of gas and liquids by orifice meter by henry palmer westcott, 1922, metric metal works edition, 2d ed. Most digital multimeters sold today are for testing electrical and electronic systems, such as those commonly found in appliance repair, and have high impedance input circuits, typically greater than one megohm 1 million ohms. Gas meter, device for measuring the quantity or rate of flow of a gas. Orifice meter constants handbook e2 gas, air, steam, oil. In case we cant take the meter reading due to weather or an inaccessible meter, you can still submit your current meter reading. How to measure frequency using multimeter instrumentation. The float movement is restricted by the float stops 4 and a protective housing 6 surrounds the meter tube. Orifice flow meter equations formulas design calculator. Metrologists then developed experimental means to standardize their electrical measurements, and an internationalreproducible system was adopted using the best scientific measurements of the time. Some meters enter the frequency through a secondary function accessed by pushing a button and setting the rotary switch to ac or dc. The prefix mega is derived from the greek megas meaning great and is symbolized as m. Quadruple meters 44 42 48 128 124 1216 lets break down two of these meters.
Measurement of gas and liquids by orifice meter 1922. To determine the coefficient of discharge of the orifice meter 1. As the name implies, it consists of an orifice plate which is the basic element of the instrument. It is rather doubtful that any ph meter can really measure a sample ph value of 7. Calibration of an orifice plate flowmeter mechanical engineering department king saud university riyadh submitted by. It is equal to 100 centimeters, 1th of a kilometer, or about 39. Orifice meter definition and meaning collins english. Orifice meter definition of orifice meter by the free. Science shows that the conservation of energy helps in the environment. Then start windows explorer and see if there is still a folder with the name of the software under c. Other publications, symposium proceedings, trade journals, textbooks, and. It is triple meter because there are three basic pulses in each measure. They are typically calibrated in billing units, the most common one being the kilowatt. Eaton approved meter sockets pg 1 of 1 single position, ringstyle, single phase, 4terminal field installable fifth terminal kit is catalog number arp00035 catalog number 100125a overheadunderground urtrs101 ch 200a overhead urtrs202 ch or urtrs2 ch 200a underground urtrs223ach.
Impedance is the term used to describe total circuit resistance which includes regular resistance, as well as resistance from. For meterbased pms, the generation criteria is based on metered asset usage since the target start date or completion date of previous work. Call the electric utility and ask them how many watt hours, or fraction of a wat hour, are represented by a revolution. Notice there is a black mark on the disk that is revolving. An example of the displacement principle is the bellowsanddiaphragm gas meter shown in the diagram. Variable area basic fundamentals flowmeter and descriptions. Do not use any part of the rosemount 1195 flow meter as a step or hand support. Uri xi ai 2 the sensitivity coefficient of each variable at the point of evaluation, xi, can be determined by calculating the results for the conditions of evaluation, r, and the change. Because of this, special care must be taken when preparing calibration curves for these meters. How do you self test your electric meter at your home. Meter multiplier meter multiplier is the number the display of the meter must be multiplied to show total registration the meter multiplier can be but isnt always the ctvt ratio if it is different the meter is scaled to a different value.
It is mainly used for robust applications as it is known for its durability and is very economical. Product is not designed to withstand the weight of individuals. Its compact, rugged design allows for universal implementation in indu strial systems, at construction sites, in. The product tag is not designed to wi thstand the weight of the flow meter do not lift the product by the tag. Turn on the appliance for an hour then turn it off. If your digital multimeter offers a frequency setting hz is the symbol on the dial. For example, a weighing scale that is not calibrat. Calibrating an instrument is to ensure that an instrument works properly within accepted tolerances such that a certain known input is able to produce the expected known output, making it precise. Rising energy costs and the lack of customer confidence in the accuracy of electricity meters all contribute to the growing importance attached to testing electricity meters. On the other hand, if your plant consumes a great deal of gas, it makes sense to verify the accuracy of the meter. Fundamental principles of diaphragm meters nicole ford actaris us gas, inc.
What is a megameter mm, a unit of length measurement. Orifice meter maintenance consists of periodic inspection as indicated above, cleaning. This is the calculated ideal sensitivity that does not take into consideration of practical factors affecting the slope. A centimeter, or centimetre, is a unit of length equal to one hundredth of a meter. An orifice meter is basically a type of flow meter used to measure the rate of flow of liquid or gas, especially steam, using the differential pressure measurement principle. Submit a meter reading every other month, we read your gas meter to calculate your gas usage for the next billing period. How do meter readings affect your bills your energy usage is calculated based on meter readings provided to us by gas networks ireland for gas supply and esb networks for electricity supply or on estimated readings. Usm 6usi s the percent random uncertainty contributed by each variable, uri, is defined as follows. Orifice meter calibrationorifice meters are commonly used. Orifice meters are commonly used to measure flow rates, but they are highly nonlinear devices. There are 3 planned meter reads per year, providing the gas networks ireland meter reading technician can access your meter.
Choose an appliance that uses a lot of electricity, such as an electric heater. Smith metertm orifice fittings and meter tubes the most trusted name in measurement introduction throughout the oil and gas industry, there stems the need for accurate, economical measurement of process fluids and natural gas. The gas meter will look similar to those pictured below. The meter number will be located below this, shown in the red box below. The licenses are stored in the hardware, the cmstick, and are needed to be able to start the applications in contrast to conventional hardware based license management systems you are now able to store a lot of different licenses in one cmstick. Temperature and sizedependent hamaker constants for metal nanoparticles k jiang1 and p pinchuk2 1bio frontiers institute, university of colorado colorado springs, 1420 austin bluffs parkway, colorado springs, co 80918, usa 2department of physics and energy science, university of colorado colorado springs, 1420 austin bluffs parkway, colorado springs, co 80918, usa.
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