This document discusses different types of transducers. It begins by defining a transducer as a device that converts one form of energy into another. Transducers are then classified based on the type of energy conversion and whether they require an external power source. Examples of common transducers are given, such as resistance temperature detectors, thermistors, LVDTs, and strain gauges. Criteria for selecting transducers as well as their basic construction and applications are outlined. Advantages like low power requirements and ability to remotely monitor signals are contrasted with disadvantages such as cost, measurement accuracy, and vibration.
Types of Transducers
Analog and Digital Transducer
Characteristic of Transducer
Selection factor of Transducer
Measurement of Displacement
LVDT and RVDT
Different types of strain Gauges
Manometers
Pressure Measuring Elements
Hall Effect
Thermocouple
Here in this presentation we will discussing about Inductive Transducer and its working principle, a brief classification of Inductive Transducer and derivation of transducer applications
The transducer whose resistance varies because of the environmental effects such type of transducer is known as the resistive transducer. The change in resistance is measured by the ac or dc measuring devices. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc.
The measurement of the physical quantity is quite difficult. The resistive transducer converts the physical quantities into variable resistance which is easily measured by the meters. The process of variation in resistance is widely used in the industrial applications.
The resistive transducer can work both as the primary as well as the secondary transducer. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal.
Working Principle of Resistive Transducer
The resistive transducer element works on the principle that the resistance of the element is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. equation-1
Where R – resistance in ohms.
A – cross-section area of the conductor in meter square.
L – Length of the conductor in meter square.
ρ – the resistivity of the conductor in materials in ohm meter.
The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal.
Applications of Resistive Transducer
The following are the applications of the resistive transducer.
Potentiometer – The translation and rotatory potentiometer are the examples of the resistive transducers. The resistance of their conductor varies with the variation in their lengths which is used for the measurement of displacement.
Strain gauges – The resistance of their semiconductor material changes when the strain occurs on it. This property of metals is used for the measurement of the pressure, force-displacement etc.
Resistance Thermometer – The resistance of the metals changes because of changes in temperature. This property of conductor is used for measuring the temperature.
Thermistor – It works on the principle that the temperature coefficient of the thermistor material varies with the temperature. The thermistor has the negative temperature coefficient. The Negative temperature coefficient means the temperature is inversely proportional to resistance.
Types of Transducers
Analog and Digital Transducer
Characteristic of Transducer
Selection factor of Transducer
Measurement of Displacement
LVDT and RVDT
Different types of strain Gauges
Manometers
Pressure Measuring Elements
Hall Effect
Thermocouple
Here in this presentation we will discussing about Inductive Transducer and its working principle, a brief classification of Inductive Transducer and derivation of transducer applications
The transducer whose resistance varies because of the environmental effects such type of transducer is known as the resistive transducer. The change in resistance is measured by the ac or dc measuring devices. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc.
The measurement of the physical quantity is quite difficult. The resistive transducer converts the physical quantities into variable resistance which is easily measured by the meters. The process of variation in resistance is widely used in the industrial applications.
The resistive transducer can work both as the primary as well as the secondary transducer. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal.
Working Principle of Resistive Transducer
The resistive transducer element works on the principle that the resistance of the element is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. equation-1
Where R – resistance in ohms.
A – cross-section area of the conductor in meter square.
L – Length of the conductor in meter square.
ρ – the resistivity of the conductor in materials in ohm meter.
The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal.
Applications of Resistive Transducer
The following are the applications of the resistive transducer.
Potentiometer – The translation and rotatory potentiometer are the examples of the resistive transducers. The resistance of their conductor varies with the variation in their lengths which is used for the measurement of displacement.
Strain gauges – The resistance of their semiconductor material changes when the strain occurs on it. This property of metals is used for the measurement of the pressure, force-displacement etc.
Resistance Thermometer – The resistance of the metals changes because of changes in temperature. This property of conductor is used for measuring the temperature.
Thermistor – It works on the principle that the temperature coefficient of the thermistor material varies with the temperature. The thermistor has the negative temperature coefficient. The Negative temperature coefficient means the temperature is inversely proportional to resistance.
A complete description of including circuit diagram, gain equation, features of Instrumentational amplifier , its working principle, applications, practical circuits, Proteus simulation and conclusion.
Uet, Peshawar Pakistan
Batch-06
This ppt consists of an easy way to represent the basic idea of transducer, its types, constructional details, applications, advantages & disadvantages.
This Presentation provides some basics of Sensors Technology.........
It gives few ideas to learn about sensors which are as normally used as electrical & electronics applications.......
In this u will study about
1.Working Principle
2.Parameter for CTT
3.Applications (in details)
4.Advantages
5.Disadvantages
of Capacitive Type Transducer
LINEAR POTENTIOMETER Potentiometers are electrical devices which are a form of variable resistance.
It consists of a sliding contact which moves over the length of a resistance element. This sliding contact connects to a plunger, which links to the object whose displacement is to be measured.
Referring to the electrical circuit shown here, An input voltage Xt is applied across the whole resistance element, at points A and C. The output voltage, Xi , is measured between the sliding contact at point B and the end of the resistance element at point C. A linear relationship exists between the input voltage Xt, output voltage Xi and the distance BC.
ANGULAR POTENTIOMETER Rotary or angular potentiometers measure angular displacement .
This article provides an introduction to the fundamental of Sensors and Transducers. It illustrates the different classifications of sensors and transducers. Explains capacitive, resistive and inductive transducers in brief. Also shows the examples under these types of transducers.
INTRODUCTION TO LVDT,RVDT and Potentiometer SACHINNikam39
DISPLACEMENT MEASUREMENT - Linear variable differential transducer is a important topic under measurement and instrumentation.
in this presentation i am providing basic of LVDT,RVDT
A complete description of including circuit diagram, gain equation, features of Instrumentational amplifier , its working principle, applications, practical circuits, Proteus simulation and conclusion.
Uet, Peshawar Pakistan
Batch-06
This ppt consists of an easy way to represent the basic idea of transducer, its types, constructional details, applications, advantages & disadvantages.
This Presentation provides some basics of Sensors Technology.........
It gives few ideas to learn about sensors which are as normally used as electrical & electronics applications.......
In this u will study about
1.Working Principle
2.Parameter for CTT
3.Applications (in details)
4.Advantages
5.Disadvantages
of Capacitive Type Transducer
LINEAR POTENTIOMETER Potentiometers are electrical devices which are a form of variable resistance.
It consists of a sliding contact which moves over the length of a resistance element. This sliding contact connects to a plunger, which links to the object whose displacement is to be measured.
Referring to the electrical circuit shown here, An input voltage Xt is applied across the whole resistance element, at points A and C. The output voltage, Xi , is measured between the sliding contact at point B and the end of the resistance element at point C. A linear relationship exists between the input voltage Xt, output voltage Xi and the distance BC.
ANGULAR POTENTIOMETER Rotary or angular potentiometers measure angular displacement .
This article provides an introduction to the fundamental of Sensors and Transducers. It illustrates the different classifications of sensors and transducers. Explains capacitive, resistive and inductive transducers in brief. Also shows the examples under these types of transducers.
INTRODUCTION TO LVDT,RVDT and Potentiometer SACHINNikam39
DISPLACEMENT MEASUREMENT - Linear variable differential transducer is a important topic under measurement and instrumentation.
in this presentation i am providing basic of LVDT,RVDT
2. CONTENTS
WHAT IS TRANSDUCER
ELECTRICAL TRANSDUCER
CLASSIFICATION OF TRANSDUCERS
SELECTION CRITERIA OF THE TRANSDUCERS
BASIC CONSTRUCTION OF TRANSDUCERS
RESISTANCE TEMPERATURE DETECTOR
THERMISTORS
LVDT
RVDT
STRAIN GUAGE
BOURDON TUBE
APPLICATIONS,ADVATAGES AND DISADVANTAGES
3. WHAT IS TRANSDUCER
The transducer is defined as the device which convert the one
form of energy into another form of the energy
Example:
Temperature transducers
Thermocouples
Resistance-Temperature Detectors (RTD)
Thermistors
Resistive position transducers
Displacement transducers
Strain gauge
4. ELECTRICAL TRANSDUCERS
The electrical transducers is one which converts the non-
electrical quantity into the equivalent electrical quantity.
Non-electrical quantity such as force, displacement,
stress, temperature.
Electrical quantity such as current , voltage
5. CLASSIFICATION OF
TRANSDUCERS
On the basis of transduction form used.
As primary and secondary transducers.
As passive and active transducers.
As analog and digital transducers.
As transducers and inverse transducers
6. On the basis of transduction form used
Resistive Transducers.
Capacitive Transducers.
Inductive Transducers.
Voltage and current Generating Transducers.
8. Passive and Active Transducers
If transducers derive the power require for transduction
from an power source, then this kind of transducer are
known as passive transducer
Example
LVDT
RVDT
9. CONT…
When there is no need for any source then these type
of transducers are Active transducers
Example are :
Thermocouple
Piezoelectric crystal
13. Inverse Transducers
These type of transducers convert a electrical quantity into
non-electrical quantity
Example
Piezoelectric crystal
Analog ammeter
voltmeter
14. SELECTION CRITERIA OF THE
TRANSDUCERS
Operating principle
Sensitivity
Operating range
Accuracy
Errors
Environmental capability
Insensitive to unwanted Signal
Stability
22. STRAIN GAUGE
It works on Piezoresistive effect.
These are used for measurement of stress and strain
If an elastic material is subjected to tension then its
resistance changes.
23. BOURDEN TUBE
Curved metallic tubes with
Elliptical cross section
Sealed at one end
Tends to straighten when pressure applied.
Angular sensitivity proportional to pressure applied
26. ADVANTAGES
Power requirement is very low for controlling the
electrical or electronic system.
Output can be indicated and recorded remotely from the
sensing element.
Electrical amplification and attenuation can be easily
done.
An amplifier may be used to amplify the electrical
signal according to requirement.
27. DISADVANTAGES
RTD produce mechanical vibrations
Their cost is high
Thermistors are unsuitable for wide temperature
Relative large displacement is required for
appreciable output for LVDT
Bourdon tubes do not provide the precise
measurement.
28. CONCLUSION
Transducers are used to convert one form energy to
another.
All the transducers are very useful in all the
application such as microphone , speaker etc.