Transducers
TRANSDUCERS
Transducers are electric or electronic devices that transform energy from one form to another. A transducer is a device that converts one form of energy to other form. It converts the measureand to a usable electrical signal. In other word it is a device that is capable of converting the physical quantity into a proportional electrical quantity such as voltage or current.
Industrial uses of transducers - Temperature, force, strain, liquid level, flow rate, electrical conductivity, etc.
Transducer contains two parts that are closely related to each other i.e. the sensing element and transduction element.
The sensing element is called as the sensor. It is device producing measurable response to change in physical conditions.
The transduction element converts the sensor output to suitable electrical form.
CHARACTERISTICS OF TRANSDUCERS
1. Ruggedness 7. Sensitivity
2. Linearity 8. Small size
3. Repeatability
4. Accuracy
5. High stability and reliability
6. Speed of response
Classification of Transducers
The transducers can be classified as:
I. Active transducers. - These transducers do not need any external source of power for their operation. Therefore they are also called as self-generating type transducers.
II. Passive transducers. - These transducers need external source of power for their operation. So they are not self-generating type transducers.
III. Analog and digital transducers.
IV. On the basis of transduction principle used.
V. Primary and secondary transducer - Some transducers contain the mechanical as well as electrical device. The mechanical device converts the physical quantity to be measured into a mechanical signal. Such mechanical devices are called as the primary transducers, because they deal with the physical quantity to be measured. The electrical device then convert this mechanical signal into a corresponding electrical signal. Such electrical devices are known as secondary
Transducers are electric or electronic devices that transform energy from one form to another. A transducer is a device that converts one form of energy to other form. It converts the measureand to a usable electrical signal. In other word it is a device that is capable of converting the physical quantity into a proportional electrical quantity such as voltage or current.
Industrial uses of transducers - Temperature, force, strain, liquid level, flow rate, electrical conductivity, etc.
Transducer contains two parts that are closely related to each other i.e. the sensing element and transduction element.
The sensing element is called as the sensor. It is device producing measurable response to change in physical conditions.
The transduction element converts the sensor output to suitable electrical form.
CHARACTERISTICS OF TRANSDUCERS
1. Ruggedness 7. Sensitivity
2. Linearity 8. Small size
3. Repeatability
4. Accuracy
5. High stability and reliability
6. Speed of response
Classification of Transducers
The transducers can be classified as:
I. Active transducers. - These transducers do not need any external source of power for their operation. Therefore they are also called as self-generating type transducers.
II. Passive transducers. - These transducers need external source of power for their operation. So they are not self-generating type transducers.
III. Analog and digital transducers.
IV. On the basis of transduction principle used.
V. Primary and secondary transducer - Some transducers contain the mechanical as well as electrical device. The mechanical device converts the physical quantity to be measured into a mechanical signal. Such mechanical devices are called as the primary transducers, because they deal with the physical quantity to be measured. The electrical device then convert this mechanical signal into a corresponding electrical signal. Such electrical devices are known as secondary