Transducer

Strain Gauge Rosette

Structure and overview – A strain gauge rosette is a term for an arrangement of two or more strain gauges that are closely positioned to measure strains along different directions of the component under evaluation. Single strain gauges can effectively measure stress in only one direction, so the use of multiple strain gauges enables more …

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Foil strain gauge

Introduction- Foil strain gauge is an extension of resistance wire strain gauge. Here this gauge also uses a resistance material foil deposited over an insulating material such as Bakelite rather than winding a wire. The metals and alloys used for foil  are similar to wire material used in wire wounded strain gauge. Why to use …

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Semiconductor strain gauge

Introduction Semiconductor strain gauge uses the property of piezoresistive effect in few semiconductor materials such as silicon and germanium to achieve greater sensitivity and higher levels of output. Semiconductor gauges can be produced to change positively or negatively when tensioned. They can be made physically smaller while maintaining a high nominal resistance. Semiconductor strain gauge …

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Unbonded strain gauge

Structure- In Unbonded strain gauge, fine resistance wire of diameter 0.003mm or less is stretched between two frames P & Q using insulated pins. Here both the frames can move relative with respect to each other and are held together by a spring loaded mechanism. Gauge wire is connected to one arm of wheat stone …

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Bonded strain gauge

Structure- In bonded strain gauge, a fine resistance wire of diameter 0.25mm or less is bonded or pasted on a thin flexible sheet of a paper, tissue, Bakelite or Teflon etc. and this substrate or sheet is directly attached using adhesive to the surface of the structure whose stress or strain to be measured. The …

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Strain gauge types

There are various types of strain gauge sensors widely used in industries. A broad classification is shown as follows- Wire wounded strain gauges Bonded wire strain gauge Unbonded strain gauge Foil strain gauge Semiconductor strain gauges Capacitive strain gauges Strain Gauge Rosettes Note- Here we will discuss wire wounded strain gauge. for other type please …

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Gauge Factor

Gauge Factor is defined as the ratio of relative change in electrical resistance to the mechanical strain. Here relative change in resistance is defined as the ratio of change in resistance produced due to strain to its original resistance (without strained). It is also referred as Strain factor of a strain gauge. According to the …

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Strain Gauge

Strain Gauge is a variable resistive transducer which is used to measure strain or change in length or distance produced by external force (i.e. expansion and or compression) or pressure. Strain gauge uses electrical property of material (mostly either conductor or semiconductor) that whenever there will be deformation in dimension of the material, its electrical …

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Inductive transducer

“Inductive transducer is also called as Variable Inductance transducer. When a physical quantity to be measured, such as motion, displacement, vibration, acceleration, force, speed etc. make changes in inductance properties of the sensor coil, or magnetic properties of core material or electric properties of magnetic circuits, these sensors or transducers are termed as inductive/ magnetic …

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Capacitive Transducer

Capacitive transducer is also called as Variable capacitance transducer. When a physical quantity such as temperature, pressure, displacement, vibration, force etc. make changes in capacitance or relative capacitance for the sensor, these sensors are termed as capacitive sensor or variable capacitance transducers. Read more about Capacitance in wikipedia Working principle of capacitive transducer- Since we …

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