In the broadest definition, a sensor is an object whose purpose is to detect events or changes in its environment, and then provide a corresponding output. A sensor is a type of transducer; sensors may provide various types of output, but typically use electrical or optical signals. For example, a thermocouple generates a known voltage (the output) in response to its temperature (the environment). A mercury-in-glass thermometer, similarly, converts measured temperature into expansion and contraction of a liquid, which can be read on a calibrate ....etc

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1. Measurement of force torque, velocity (7)
Electric balance different types of load cells magnets elastics load cell-strain
gauge load cell-different methods of torque measurement, strain gauge, relative regular
twist-speed measurement-revaluation counter- capacitive tacho-drag up type tacho
D.C and A.C tacho generators stroboscope.

2. Measurement of acceleration, vibration and density (8) Accelerometers LVDT,
piezo- electric, strain gauge and variable reluctance type accelerometers mechanical
type vibration instrument ....etc

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This book provides a complete and up-to-date coverage of the course on Process Control in a simple yet precise manner which leads to the development of a deeper understanding of the subject. It has been updated keeping pace with the current trends in process control. An effort has been made to provide a fine balance between the old analogue techniques and new computer-based digital techniques. ....etc

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An actuator is a component of machines that is responsible for moving or controlling a mechanism or system.

An actuator requires a control signal and source of energy. The control signal is relatively low energy and may be electric voltage or current, pneumatic or hydraulic pressure, or even human power. The supplied main energy source may be electric current, hydraulic fluid pressure, or pneumatic pressure. When the control signal is received, the actuator responds by converting the energy into mechanical motion.

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I am Ipsa biswas. Final year B.tech student.My mail id is [email protected] want a book about this:Definition, principles of sensing and transduction, classification
Mechanical and Electromechanical sensors
Resistive (potentiometric) type: Forms, materials, resolution, accuracy,
sensitivity
Strain Gauges: theory, types, materials, design consideration, sensitivity,
gauge factor, variation with temperature, adhesives, rosettes, applicationsforce,
velocity and torque measurements
Inductive sensors: common types- reluctance chan ....etc

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sensors and transducers d patranabis free ebook

Measurement is an important subsystem of a mechatronics system. Its main function is to collect the information on system status and to feed it to the micro-processor(s) for controlling the whole system.

Measurement system comprises of sensors, transducers and signal processing devices. Today a wide variety of these elements and devices are available in the market. For a mechatronics system designer it is quite difficult to choose suitable sensors/transducers for the desired application(s). It i ....etc

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