Difference Between Transducer And Sensor Pdf

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The questions related to the difference between sensor and transducer have always been a hot favorite with interviewers.

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One of the significant difference between the sensor and the transducer is that the sensor senses the physical changes occur in the surrounding whereas the transducer converts the physical quantity or nonelectrical into another signal or electrical signal. Some other differences between the sensor and transducer are explained below in the comparison chart. The transducer and sensor both are the physical devices used in electrical and electronic instruments for measuring the physical quantities. The sensor detects the energy level and changes it into an electrical signal which is easily measured by the digital meters. The transducer transfers the energy either in the same form or another.

A digital sensor produces discrete digital signals. Because of this, the range of possible sensors and transducers is by now. Sensors And Transducers has 38 ratings and 3 reviews. Actuators are devices that work opposite to sensors. It is useful to anyone studying measurement systems and instrumentation but it is provided mainly in support of the EC module D — Control System Engineering. An analogue sensor produces continuously varying output signals over a range of values. The result is a highly readable text which provides a unique introduction to the selection and application of sensors, transducers and switches, and a grounding in the practicalities of designing with these devices.

Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. History has shown that advancements in materials science and engineering have been important drivers in the development of sensor technologies. For instance, the temperature sensitivity of electrical resistance in a variety of materials was noted in the early s and was applied by Wilhelm von Siemens in to develop a temperature sensor based on a copper resistor. The high resonance stability of single-crystal quartz, as well as its piezoelectric properties, have made possible an extraordinarily wide range of high performance, affordable sensors that have played an important role in everyday life and national defense. More recently, a new era in sensor technology was ushered in by the development of large-scale silicon processing, permitting the exploitation of silicon to create new methods for transducing physical phenomena into electrical output that can be readily processed by a computer.

Difference Between Sensor & Transducer

The main difference between a sensor and a transducer is the output signal. Both a sensor and a transducer are used to sense a change within the environment they are surrounded by or an object they are attached to, but, a sensor will give an output in the same format and a transducer will convert the measurement into an electrical signal. Sensors are defined as a device which is used to measure a physical quality - for example - light, sound, temperature etc. For example a mercury thermometer; the mercury simply expands when the temperature rises to give a reading for the user, there are no electrical inferences or changes. A thermistor also simply responds to the change in resistance due to the temperature change. A transducer can measure similar qualities to a sensor but will convert the signal from one physical form to another meaning their input and output signals are not the same as each other. Transducers are sometimes referred to as energy converters.


This unit familiarizes you with transducers, sensors, and actuators and helps you understand the difference between them. The following topics are discussed.


Difference between Sensor and Transducer

The physical devices, sensor and transducers are might used by some people interchangeably. These devices are used in numerous electrical and electronic gadgets and appliances. But, people fail to make a difference between sensor and transducer. Because, transducers are sometimes found in sensors.

Sensor : Sensor is the device that detect the change in the environment. It can be temperature sensor, pressure sensor or Humidity sensor. As we Know sensors sense just like eyes and ears.

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The difference between transducer and sensor is that transducer converts energy from one form to another whereas sensor measures the physical changes in.


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5 Response
  1. Echecinca

    One of the significant difference between the sensor and the transducer is that the sensor senses the physical changes occur in the surrounding whereas the transducer converts the physical quantity or nonelectrical into another signal or electrical signal.

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