Speed Digital Measurement Method

Measurement speed digital way can be done by way of inductive, capacitive and optical. Measurements by means of induction was performed using a serrated rotor, stator is made of a coil wound on a permanent magnet. The output of this sensor in the form of voltage pulses. The use of this method is quite simple, very practical without requiring complex ...

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Thermal Sensor

AIR CONDITIONING. Srivastava (1987), said temperature is one of the four basic quantity that is recognized by the International Measurement System (The International Measuring System). Lord Kelvin in 1848 proposed a thermodynamic temperature scale at a fixed point of the triple point, where the solid phase, the liquid and vapor are together in equilibrium, this figure is 273.16 ° K ...

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Tacho Generator Sensor

Sensors are often used for angular velocity sensors are tacho generator. The tacho generator is a small generator that generates a DC voltage or AC voltage. In terms of tacho generator excitation can be generated by the excitation of the outside or electromagnetic impact of the permanent magnet. DC tacho generator can generate a DC voltage that can directly produce ...

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Sensor Strain Gauge (SG)

Strain gauge can be used as a position sensor. SG in operation utilizing sehingganya change in resistance can be used to measure very small displacements due to bending (tensile stress) or stretching (tensile strain). Definition of elasticity (ε) strain gauge is the ratio change in length (ΔL) of the original length (L), namely: or the ratio of change in resistance ...

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Inductive Sensors and Electromagnets

Inductive sensors utilize inductance change • as a result of the movement of a ferromagnetic core within the coil • due to an approaching ferromagnetic material The position sensor Figure 3.26: (a) Core shifted flat (b) Core I bergser spin (c) The series of variable inductance Reader circuit inductance change • two inductors arranged in a bridge circuit, one as ...

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Measuring Flow In Thermal

a. Hot Wire Anemometer This method is quite simple: by using a wire heated by electric current, the current flowing in the wire is made to remain constant using a constant current source. If no air flow, the wire will cool (as we blow out the candles) by the cooling of the wire, the wire resistance decreases. Because of the ...

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