Transducers

Differential Output Transducer

Differential Output Transducer: The Differential Output Transducer consists of a coil which is divided into two parts, as shown in Figs. 13.17(a) and (b). (Inductive transducers using self inductance as a variable use one coil, while those using mutual inductance as a variable use multiple coils.)  Normally the change in self inductance, ΔL, for inductive …

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Inductive Transducer Definition

Inductive Transducer Definition: Inductive Transducer Definition may be either of the self generating or the passive type. The self generating type utilises the basic electrical generator principle, i.e. a motion between a conductor and magnetic field induces a voltage in the conductor (generator action). This relative motion between the field and the conductor is supplied …

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Thermistor Circuit

Thermistor Circuit: Thermistor Circuit – The electrical resistance of most materials changes with temperature. By selecting materials that are very temperature sensitive, devices that are useful in temperature control circuits and for temperature measurements can be made. Thermistor (THERMally sensitive resISTOR) are non-metallic resistors (semiconductor material), made by sintering mixtures of metallic oxides such as …

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Resistance Thermometer Transducer

Resistance Thermometer Transducer: The resistance of a conductor changes when its temperature is changed. This property is utilised for the measurement of temperature. The Resistance Thermometer Transducer is an instrument used to measure electrical resistance in terms of temperature, i.e. it uses the change in the electrical resistance of the conductor to determine the temperature. …

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Types of Strain Gauge Transducer

Types of Strain Gauge Transducer: Types of Strain Gauge Transducer are three types, namely Wire Strain Gauge Foil Strain Gauge Semiconductor Strain Gauge 1. Wire Strain Gauge: Wire Strain Gauge has three types namely, Grid Type Strain Gauge Rossette Type Strain Gauge Torque Type Strain Gauge Helical Type Strain Gauge The grid arrangement of the …

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Strain Gauge Factor Derivation

Strain Gauge Factor Derivation: The Strain Gauge Factor Derivation is an example of a passive transducer that uses the variation in electrical resistance in wires to sense the strain produced by a force on the wires. It is well known that stress (force/unit area) and strain (elongation or compression/unit length) in a member or portion …

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Resistive Position Transducer

Resistive Position Transducer: The principle of the Resistive Position Transducer is that the physical variable under measurement causes a resistance change in the sensing element. (A common requirement in industrial measurement and control work is to be able to sense the position of an object, or the distance it has moved). One type of displacement …

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Resistive Transducer Definition

Resistive Transducer Definition: Resistive Transducer Definition are those in which the resistance changes due to a change in some physical phenomenon. The change in the value of the resistance with a change in the length of the conductor can be used to measure displacement. Strain gauges work on the principle that the resistance of a …

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Electrical Transducer Definition

Electrical Transducer Definition: Transducer Definition A transducer is defined as a device that receives energy from one system and transmits it to another, often in a different form. Broadly defined, the transducer is a device capable of being actuated by an energising input from one or more transmission media and in turn generating a related …

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