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TLDR: Instrumentation refers to the use of measuring instruments to indicate, measure, and record physical quantities. It is used in various fields such as metrology, automation, and control theory. Instruments can range from simple thermometers to complex components of industrial control systems. They are used in laboratories, factories, vehicles, and even in everyday household items like smoke detectors and thermostats.

Instrumentation involves measuring different physical quantities such as pressure, flow, temperature, levels of liquids, density, viscosity, radiation, frequency, current, voltage, and more. These measurements are important in various industries and applications.

The history of instrumentation can be divided into several phases. In the pre-industrial phase, basic instruments like scales and clocks were used to measure weight and time. In the early industrial phase, pneumatic transmitters and controllers were introduced, allowing for remote monitoring and control of processes. With the advent of electronic instruments, maintenance costs were reduced and accuracy increased. The introduction of distributed control systems and SCADA (Supervisory Control and Data Acquisition) allowed for centralized control and monitoring of industrial processes.

Instrumentation has a wide range of applications. In households, it is used in devices like thermostats, refrigerators, toasters, and security systems. In the automotive industry, instrumentation is used in cars to monitor various parameters like speed, temperature, and fuel levels. Aircraft instrumentation includes sensors and displays for navigation, altitude, and airspeed. In laboratories, instrumentation is used for precise measurements and automation of experiments.

Instrumentation engineering is a specialized field that focuses on the design and operation of measuring instruments and automated systems. Instrumentation engineers work in industries with automated processes, such as chemical plants or manufacturing plants, to improve productivity, reliability, and safety. They are responsible for integrating sensors with recorders, transmitters, displays, and control systems.

Overall, instrumentation plays a crucial role in various industries and applications, enabling accurate measurements, control, and automation.

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