Electrical instrumentation is the development, construction and use of instruments for measuring, inspecting or displaying electrical currents and voltages. Instrumentation is a scientific discipline which includes many other sub-disciplines, including electrical circuits, electrical automation, electrical power systems, power electronics, power supply and voltages, analog electronics, digital electronics, communications electronics, electronic systems, and data logging. Instrumentation is a vital science which is concerned with instrumentation, including:
data processing, and
equipment for sensing.
Electrical instrumentation requires science and technology in the technical and other related fields. Thus, electrical instrumentation is a distinct field of science, engineering and technology in its own right. The field of electrical instrumentation develops, builds, manufactures and uses electrical measuring instruments. An electrical measuring instrument, commonly known as an instrument, is a device that is used to measure something. This could be a physical quantity such as height, temperature, pressure or a chemical quantity such as concentration, density, color, purity or clarity. A voltage, current or resistance is an example of a physical quantity. An instrument could be used to measure electrical quantities and is usually used to measure the electricity passing through the instrument. Electrical instruments are used to make electrical measurements that would otherwise be too complex to make manually. Instruments provide the means by which the measurement of electrical quantities can be recorded or made. Electrical instruments can make an electrical measurement by one of three methods.
An instrument can be:
measuring an electrical current,
measuring a voltage,
measuring a resistance,
measuring a frequency,
measuring the rate of change of a quantity,
measuring a phase angle or
measuring a time.
In the history of instrumentation, there have been three periods or epochs when instruments have been used to measure electrical quantities. The first epoch was the Classical Era. Instruments were not used to measure electrical quantities during this era. The invention of the first electrical meter in the late 18th century, and the invention of the first voltmeter in the early 19th century during the Classical Era introduced the instruments that would dominate the second epoch of instrumentation. The development and application of the scientific laws of electricity during the second epoch gave rise to a second epoch of instrumentation during the first half of the 20th century. The third epoch of instrumentation that we are in is the Modern Era. This is the era in which the first few decades of the 21st century will be. This era of instrumentation is very different from the first and second eras of instrumentation. Instruments are 0b46394aab