Basic Theory Potentiometer

Potentiometers available on the market consists of several types, namely: carbon potentiometer, potentiometer wire wound and metal potentiometer movie. 1. Potentiometer potentiometer carbon is made of carbon price is quite cheap but very low kepressian this potentiometer resistance is usually the price will be very easy to change due to contact shifting. 2. Potentiometer coil of wire (wire wound) is ...

Read More »

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 ...

Read More »

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 ...

Read More »

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 ...

Read More »

Fluid Flow Sensors (Flow Sensor)

Flow measurement known since 1732 when Henry Pitot regulate the amount of fluid flowing. In the measurement of fluid necessary to determine the amount and flow velocity vector at a point in the fluid and how the fluid changes from point to point. Measurement of fluid flow or censorship can be classified as follows: 1. Measurement of the quantity These ...

Read More »

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 ...

Read More »