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Pressure Sensors, Transducers

Pressure sensors, also known as pressure transducers, are devices that measure the pressure of a gas or liquid against a reference point. Generally, these devices are used to measure pressure in gases, liquids, or solid materials such as water, air, pressure vessels, and engine cylinders. The pressure sensor typically consists of a transducer, a converter, and a microcontroller.

Application Field

Pressure sensors are widely used in industrial, automotive, marine, and aerospace applications. In industrial applications, they are used to measure and control the pressure of steam, oils, and gases. In automotive applications, they are used to measure the air pressure in the engine cylinder, the level of fuel in the tank, and the brake system pressure. In the marine industry, they are used to measure the pressure of water, fuel, and gases. In aerospace applications, they are used to measure the pressure of air in the cabin and the air pressure outside the airplane.

Working Principle

The working principle of the pressure sensor is based on the principle of pressure transduction. Pressure transduction is the conversion of a pressure signal, such as a pressure differential or a steady pressure, into an electrical signal. The transducer consists of a strain gauge, an amplifier, and a converter which all work together to produce the output signal.

The strain gauge is a thin metal strip with electrical conductors. When the pressure is applied, it creates a strain in the metal strips. This strain creates a change in electrical resistance which is detected by the amplifier and converted to a voltage signal. The converted voltage signal is then sent to the converter, which converts it into an output signal. The output signal is then sent to a microcontroller, which processes it and sends it to a display.

Conclusion

Pressure sensors are devices that measure the pressure of gases, liquids, or solid materials against a reference point. The pressure sensors typically consist of a transducer, a converter, and a microcontroller. Pressure sensors are widely used in industrial, automotive, marine, and aerospace applications. The working principle of the pressure sensor is based on the principle of pressure transduction. This principle involves the conversion of a pressure signal into an electrical signal, which is then sent to the microcontroller for processing and display.