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Cutaway view of an LVDT. Current is driven through the primary coil at A, causing an induction current to be generated through the secondary coils at B.. The linear variable differential transformer (LVDT) – also called linear variable displacement transformer, [1] linear variable displacement transducer, [2] or simply differential transformer [3] – is a type of electrical transformer [4 ...
Eddy current sensors are displacement sensors that use the principle of eddy current formation to sense displacement. These sensors measure shaft displacement in rotating machinery and have been around for many years as they offer manufacturers high-linearity, high-speed measurements, and high resolution. [1]
A position sensor may indicate the absolute position of the object (its location) or its relative position (displacement) in terms of linear travel, rotational angle or three-dimensional space. Common types of position sensors include the following: Capacitive displacement sensor; Eddy-current sensor; Hall effect sensor; Inductive sensor
An ultrasonic displacement sensor is a kind of displacement sensor. [6] These measure the distance to targets by emitting low-frequency sound waves and measuring the time they take to return. [6] Displacement sensors can be made using linear variable differential transformers. [6]
An LVDT (Linear Variable Differential Transformer) Variable Area Rotameter, is a meter designed to measure the flow rate of a fluid or gas. [ citation needed ] Mechanism
An ultrasonic displacement sensor is a kind of displacement sensor. [3] These measure the distance to targets by emitting low-frequency sound waves and measuring the time they take to return. [3] Displacement sensors can be made using linear variable differential transformers. [3]
Unfortunately, the low cost of the transducer is partially offset by the cost of the additional signal-processing circuitry needed to recover a useful signal. And because the magnitude of the signal developed by the VR sensor is proportional to target speed, it is difficult to design circuitry to accommodate very-low-speed signals.
A wireline extensometer monitoring slope displacement and transmitting data remotely via radio or Wi-Fi. An extensometer is a device that is used to measure changes in the length of an object. [1] It is useful for stress-strain measurements and tensile tests. Its name comes from "extension-meter".