Displacement Measurement

What is a potentiometer?

The potentiometer can be described as a device to measure the potential difference, this device is capable to measure the unknown voltage by comparing it with a known voltage. The known voltage could be supplied by a standard cell or it could also be supplied from another voltage source. Basically, a potentiometer is a resistor …

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What is a magnetostrictive displacement sensor? What are the uses of a magnetostrictive material?

Magnetostriction is the process in which a ferromagnetic material can change its size or shape when it is placed in a magnetic field. This device can be used to do the position control. The magnetostrictive position sensor uses a ferromagnetic element in order to determine the location of a position magnet which is displaced along …

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What is a fotonic sensor?

A fotonic sensor is a fiber optical sensor and it can be used to do the displacement measurement. This sensor could do non-contact measurement and its working is based on fiber-optic principle and it can measure displacement, vibration, and surface condition. The operation of this sensor is simple, the part of the light which is …

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What is an eddy current sensor?

An eddy current sensor is a displacement measurement sensor it can be considered as the improved version of an inductive proximity sensor. This sensor is composed of two coils one is the active or sensor coil and the other is the reference or balance coil. The eddy current sensor would measure the distance between the …

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What is a magnetic proximity sensor? What are the types of magnetic position sensors?

A magnetic proximity sensor is a non-contact proximity sensor and it can be used to detect magnetic objects. This type of proximity sensor is also called reed contacts. This would use the magnetic field distortion for its operation, in case if a ferromagnetic material comes in the range of this sensor then the magnetic field …

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What is an optical proximity sensor?

The optical proximity sensor can be used to detect the position, so basically they are position sensors. This is a type of sensor that can convert signals generated by light emission into electrical signals. The response of the optical receiver would vary according to the wavelength. This is also a contact-free position sensor and its …

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What is a capacitive proximity sensor?

A capacitive proximity sensor can detect the object without touching them, the capacitive proximity sensor would look like an inductive proximity sensor. These are solid-state devices that have an oscillator and a power amplifier and also have two plates of a capacitor built into the face of the sensor unit. The capacitor proximity sensor is …

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