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Capacitive Pressure Transducer Working Principle: Capacitive Pressure Transducer Working Principle – A linear change in capacitance with changes in the physical position of the moving element may be used to provide an electrical indication of the element’s position. The capacitance is given by where K = the dielectric constant A = the total area of […]

Pressure Inductive Transducer: Pressure Inductive Transducer – A simple, arrangement, wherein a change in the inductance of a sensing element is produced by a pressure change, is given in Fig. 13.22. Here the pressure acting on a movable magnetic core causes an increase in the coil inductance corresponding to the acting pressure. The change in

Linear Variable Differential Transformer (LVDT): The differential transformer is a passive inductive transformer. It is also known as a Linear Variable Differential Transformer  (LVDT). The basic construction is as shown in Fig. 13.19. The transformer consists of a single primary winding P1 and two secondary windings S1 and S2 wound on a hollow cylindrical former.

What is an Inductive Transducer?: Inductive Transducer may be either of the self generating or the passive type. The self generating type utilizes 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

Thermistor Working Principle: Thermistor Working Principle – 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

Resistance Thermometer Working Principle: The resistance of a conductor changes when its temperature is changed. This property is utilized for the measurement of temperature. The Resistance Thermometer working principle 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

Types of Strain Gauge Transducer: Types of Strain Gauge Transducer are three types, namely Wire Strain Gauge Foil Strain Gauge Semiconductor Strain Gauge 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 wire

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

Resistive Transducer | Resistive Potentiometer | Resistance Pressure Transducer: Resistive Transducer 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