Only the most common quantities, such as voltage, current, power, resistance. Variable measuring instruments in hindi basicadvance mechanical measuring instrument in hindibasic hps tech and mech. Electronic measuring instruments tutorial tutorialspoint. Amplified dc meter, ac voltmeter, true rms responding voltmeter, electronic multimeter, digital voltmeter, vector voltmeter. Jul 20, 2014 in this post we will discuss about classification of electrical instruments. In measuring the parameters of electronic equipment, it is often necessary to use indirect methods, requiring the use not only of measuring instruments but also of auxiliary apparatus, such as generators for voltage and current at various frequencies, operating in a continuous mode or with different types of oscillation modulation. The voltmeterammeter method figure 1 is used for measuring relatively large inductances.
In addition some meters are capable of measuring capacitance, frequency and other variables. If the instruments can measure the basic electrical quantities, such as voltage and current are known as basic measuring instruments. This means they are suitable for virtually all daily electrical measuring tasks. The multimeasure basic series includes measuring devices for everyday use such as distance meter, layer thicknesses meter, videoscopes, thermohygrometers, pyrometers and much more. Their principle of operation depends on the method of measurement. Measurement measurement also called metrology is the science of determining values of physical variables. Both signal generation signal generators, power supplies and signal measurement multimeters, scopes instruments are nonideal. It is used to delay signal for sometime in the vertical section. This revision covers in detail the digital and microprocessorbased instruments. Instruments are formed from a connection of blocks.
Both instruments in the testo 755 currentvoltage tester family are the first of their kind. Instrumentation systems encyclopedia of life support. Electrical measuring equipment is available in three basic configurations. These instruments are used principally for measuring basic parameters such as current, voltage, resistance, and. Definitions used in electrical measuring instruments. Electronic counters and frequency and time interval analyzers gary d. Practical guide to electrical measurements in low voltage switchboards a b v t v t f 50 hz a 0 50 100 150 200 250 500 a 0 50 100 150 200 250 500 v 0 80 60 40 20 made to measure. Recording and displaying measuring instruments 88 3. Basic microwave signal generator specifications 18. This unit passes its self test but has not been tested further. Practical guide to electrical measurements in low voltage switchboards 1 1 electric measurements measurement. Measuring centres 7 use the mc 740 multifunction meter is used for monitoring and measuring electrical quantities of a threephase electricenergy distribution system.
Below are some examples of how the instruments themselves change our measurements. It is the exact value or the perfectly correct value in any measuring scheme. Moritz gsi, darmstadt, germany abstract mechanical equipment is an integral part of each magnetic measurement. The three most common variations in the measured quantity. Introduction to circuit measurement circuit measurement is used to monitor the operation of an electrical or electronic device, or to determine the reason a device is not operating properly. Variable measuring instruments in hindibasicadvance.
An example of one of these meters is the fluke 189 hand held multimeter. This type meter is very common in most shops and is portable and easily used. The digital instruments has an output that varies in discrete steps and so can only have a finite number of values. Inductance meters instruments for measuring the inductance of circuits with lumped parameters, the windings of transformers and chokes, and inductance coils. Physical methods, instruments and measurements measurements of electrical quantities jan saliga encyclopedia of life support systems eolss definitions of basic electric quantities and measurement units are presented in section 2. It will also allow you to conduct some measurements and familiarize yourself with these instruments. List of electrical and electronic measuring equipment wikipedia. To accurately model our systems, we must take nonidealities into account. Cooper, modern electronic instrumentation and measurement techniques prentice hall, 1994.
List of electrical and electronic measuring equipment. Electrical field, e, is the negative of the gradient in electrical potential, i. Basic electrical measuring instruments by pramod a 2. An important parameter for capacitors is the maximum voltage rating before breakdown. Pdf instruments measuring the diseasespecific quality of. Modern electronic instrumentation and measurement techniques.
In this post we will discuss about classification of electrical instruments. It is defined as the device for determining the value or magnitude of a quantity or variable. Instruments rarely respond instantaneously to changes in the measured variables due to such things as mass, thermal capacitance, fluid capacitance or electrical capacitance. Classification of measuring instruments electrical instruments may be divided into two categories, that are. All testo electrical testing equipment has gone through extensive tests to ensure it is reliable, robust, and suitable for a range of electrical measurements and. Jan 11, 2016 basic electrical measuring instruments 1.
Measures the resistance of a component oscilloscope. Below is the list of measuring instruments used in electrical and electronic work. Electronic measuring instruments tutorial in pdf tutorialspoint. The meter is provided with 32 program adjustable alarms, up to four inputs or outputs and communication. For a mechanical engineer to properly select and utilize.
The three instruments in the testo 770 clamp meter family are ideally suited for current measurement in switching cabinets. Basic electrical parameters measurement laboratory. Testos range of electrical measuring instruments cover all important measurements for testing electrical systems, and features topquality digital multimeters, clamp meters, voltage testers, currentvoltage testers and ncv testers. Displays waveform of a signal, allows measurement of frequency, timing, peak excursion, offset. Having been trained to deal with mechanical systems, the use of electrical or electronic system to make measurements on these mechanical systems are far from obvious. But before proceeding further, it good to refresh the definitions and terms used in measurements, instruments. This is a basic measuring instruments bmi 4800 powerscope. Crt, block schematic of cro, time base circuits, lissajous. Current in electronics is usually measured in ma which are called milliamperes, which are 1s of an ampere basically an ammeter consists of a coil that can rotate inside a magnet, but a spring is trying to push the coil back to zero. It is the one which is based on electronic or electrical principles for its measurement function. Electronic instruments for measuring basic parameters. Classification of electrical instruments electrical. True rms responding voltmeter, electronic multimeter, digital. The main objectives of this lab course are i to expose the students to different types of electrical measuring instruments.
Be able to perform simple electrical measurements of voltage, current, and resistance, as well as more sophisticated, scientific electrical measurements, master handheld and more accurate stationary multimeters and understand their differences, have some knowledge of use of ac signals, ac generators, and an oscilloscope. With the advancement of technology in intergrated circuits, instruments are becoming increasingly compact and accurate. Classification, absolute and secondary instruments, indicating instruments. This tutorial is meant for all the readers who are aspiring to learn the concepts of electronic measurements and instrumentation. This is a wide band amplifier used to amplify signal in the vertical section of the signal. Cathode ray tube, vertical and horizontal deflection systems, delay lines. This unit is a 4channel line disturbance analyzer and digital graphing monitor.
Outcome now a days electrical energy plays in important role in our day to day life. Electrical measurements and measuring instruments u. The measurement of the electrical parameters quantities in a circuit is an essential part of working on electrical and electronic equipment. It is used to generate sawtooth voltage which it is applied to. Practical guide to electrical measurements in low voltage switchboards 2csc445012d0201 122010 1.
The meter is provided with 32 program adjustable alarms, up to four inputs or outputs and. Pdf amplifier and transistor noiseparameter measurements. Design, manufacturing and testing of gauges of all kinds. Nevertheless, in the electrical field it is not always easy to find samples to compare. Electronicsmeasuring instruments wikibooks, open books for. Classification of electrical instruments electrical tutorials. After some preliminary background information and conventions are presented, noise parameters are. Nov 21, 2017 variable measuring instruments in hindi basicadvance mechanical measuring instrument in hindibasic hps tech and mech. Eee 432 measurement and instrumentation lecture 1 fundamentals of measurement prof.
The primary elements of instruments are sensors and transducers. The systematic discussion of their working principle, operation, capabililties, and limitions will facilitate easy understanding of the instruments as well as guide the user select the right. Basic electrical measuring instruments linkedin slideshare. The measurement, instrumentation and sensors handbook kelm. Analog and digital instruments digital instruments. Pdf instruments measuring the diseasespecific quality. The output can have an infinite number of values within the. Name purpose ammeter ampermeter measures current capacitance meter. This tutorial is meant to provide our readers conceptual knowledge about various electronic measuring instruments and how to choose a specific measuring instrument based on their requirement.
408 1596 123 386 846 380 679 984 1185 857 337 1269 199 350 1073 3 1015 1190 1130 76 611 1255 1442 94 1351 526 906 65 1024 866