Classification of transducers modulating and selfgenerating transducers modulating transducer requires an auxiliary energy source strain gauge, thermal resistor, liquidcrystaldisplay selfgenerating transducer requires no auxiliary energy source solar cell, thermocouple, piezoelectric element xaxis input energy domain. Rtd converts the temperature into the electrical resistance,which can be measured using the wheatstone bridge. Resistance strain gauge the change in value of resistance of metal semiconductor due to elongation or compression is known by the measurement of torque, displacement or force. From now till the end of this presentation we will talk in english. The photoelectric transducer converts the light energy into electrical energy. Free electronic ppt slides explore the various applications of electronics. One of the most common applications is measuring displacement.
What is pt100 pt100 is a platinum rtd which is most widely used in industries. Distinct ranges of frequency are availed for examination of distinct parts of body and they are mentioned below. These transducers are usually used as the secondary transducers, where the output. Instrumentation and control tutorial 2 sensors and primary transducers this tutorialprovides an overview of instrument sensors used in process and automatic control. The photoelectric transducer uses a photosensitive element, which ejects the electrons when the beam of light absorbs through it. Temperature transducers thermocouples resistance temperature detectors rtd thermistors resistive position transducers displacement transducers strain gauge 3. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Measurement system comprises of sensors, transducers and signal.
Electrical pressure transducerstypes,working,construction. Resistive transducers have many and varied applications in the transduction of measurands such as displacements, mechanical strain, pressure, force and load, temperature, and fluid velocity into electrical outputs. Resistive element is generally a metaloxide ceramic containing mn, co, cu, or ni. Comparison of piezoresistive and capacitive ultrasonic. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Ppt transducers powerpoint presentation free to view. A pressure transducer is a device which converts an applied pressure into a measurable electrical signal which is linear and proportional to the applied pressure. The transduction mechanisms are based on the change in resistance. Primary and secondary transducersexamplelvdt and bourdon tube 7. Ultrasound ppt and pdf for free download study mafia. State description of transducers the steady state description reveals characteristics of transducers note. In capacitive transduction transducers the measurand is converted to a change in the. Potentiometer construction, working and applications elprocus.
Ppt temperature measurements powerpoint presentation free. Example piezoelectric cells photovoltaic cells passive transducers depend on the change in electrical parameters such as r,l,c. Materials material gage factor, g tcr 105 ni80 cr20 2. A transducer is a device which transforms a nonelectrical physical quantity i. Types of strain gauge the type of strain gauge are as 1. What are variable resistance transducers, resistive. These indicators work on the sensing mechanism from the analog pressure gauge, based upon variable resistance transducers. Sep 21, 2011 there are mainly three types of electrical pressure transducers inductive, resistive, and capacitive. Transducers and inverse transducers a transducer can be broadly defined as a device which converts a nonelectrical quantity into an electrical quantity.
This construction is currently used in an invasive blood pressure transducer shown in fig. For example, a thermistor does not generate any electrical signal, but by passing an electric current through it, its resistance can be measured by detecting. Transducers transducer a device that converts a primary form of energy into a corresponding signal with a different energy formsignal with a different energy form primary energy forms. Movement can be in rotational and translational or combination of both. Transducers a transducer is a device that converts energy from one form to another energy forms can be mechanical, visual, aural, electrical, thermal, chemical, etc. A resistive input transducer whose change in resistance is related to changes in length. These are not generic presentations, but cater to particular aspects of technology, and explore its impact on specific sectors of the society. For example, certain sensors convert temperature into a change in resistance.
Pdf resistive stepped transducer used for water level. Blood pressure transducer it has a circular sensing electrode in the center of the diaphragm, an annular. A pot is an electromechanical device containing an electrically conductive wiper that slides against a. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Example, displacement sensor measuring diameter of blood vessel. A field guide to understanding pressure transducers. The resistance of a metal conductor is expressed by a simple equation. Ppt capacitive transducers ppt lakshmi narayana reddy. Resistive, capacitive, inductive, and magnetic sensor. Photoelectric transducers are effective in producing high quality fast responding optocouplers which can be used in many varying applications. Seebeck discovered that an electric potential occurs when 2 different metals are joined into a loop and the two junctions are held at. These devices use a sender that is either a switch or some form of resistive device.
Optocouplers belong to a family of devices used to electrically isolate circuits. Most of the ppt themes that fall under the electronic category are designed specifically for a formal setup. Biomedical transducers types of biomedical transducers. Optical encoder 1 the optical encoder uses an opaque disk that has one or more circular tracks, with some arrangement of identical transparent windows.
Transducers convert one form of energy into another. Ultrasound is a term which is used to explain sound of frequencies above 20,000 hertz hz. Ppt sensors and transducers powerpoint presentation free to. This free template is very basic and can be used for electronic projects as well as digital presentations in powerpoint. The inductive type consists of a linear voltage differential transformer lvdt where core is positioned by the pressure through a diaphragm or a bellows element as shown in the figure below. Download free electronic ppt themes particular to your preferred sub. Frequencies which are between 1 30 mhz are like typical for diagnostic ultrasound.
Resistance thermometer the change in resistance of metal wire due to the change in. As the body moves, the position of the slider also changes accordingly so the resistance between the fixed point and the slider changes. Resistance transducers potentiometers the excitation voltage maybe ac or dc and output voltage is proportional to the input motion. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal. So the resistance temperature coefficient of platinum is 0. What is transducer the transducer is defined as the device which convert the one form of energy into another form of the energyexample. A transducer is a device that is actuated by power from one system and supplies power usually in another form to a second system. Sensors chapter 3 introduction describing sensor performance temperature sensors light sensors force sensors displacement sensors motion sensors sound sensors a free powerpoint ppt presentation displayed as a flash slide show on id. Here we present a comparison of capacitive and piezoresistive sensors packaged in silicone gels on dips dual inline packages. Potentiometer construction, working and applications. Sep 26, 2017 this ezed video explains transducers types of transducers electrical transducer mechanical transducer thermal transducer resistive transducer inductive transducer liner variable.
The output power is almost entirely provided by the measured signal without an excitation voltage. There are many kinds of resistive sensors, and they. Resistive, capacitive, inductive, and magnetic sensor technologies is a complete and comprehensive overview of rcim sensing technologies. The following investigations were made on strain resistive pressure transducers utilizing microelectronic technolo gies. Sometimes the equation is given as r ro1 2 a basic temperature sensor is made by winding a thin resistance wire into a small sensor head. This isolation may be required to protect circuits from surge voltages and to filter certain noise. Transducers, ask latest information, abstract, report, presentation pdf,doc, ppt, transducers technology discussion, transducers paper presentation details, transducers. Packaged in a thermally conductive glass bead or disk with two metal leads.
The capacitance of the capacitive transducer changes because of many reasons like overlapping of. Elementary school children all the way up to high school students love taking a break from normal learning with a fun game of jeopardy. Potentiometerit consists of a resistance element provided with a sliding contact called wiper. The capacitive transducer consists of two parallel metal plates that are separated by the dielectric. This change in resistance takes place due to variation in length and cross sectional area of the gauge wire, when an external force acts on it.
Resistive,inductive and capacitive transducers an inverse transducer is defined as a device which converts an electrical quantity into a nonelectrical quantity. Strain gauge the strain gauge is a passive, resistive transducer which converts the mechanical elongation and compression into a resistance change. A good example of an active sensor is an lvdt sensor or a strain gauge. The change in resistance is measured by the ac or dc measuring devices.
Resistive position transducers displacement transducers strain gauge. The transducer whose resistance varies because of the environmental effects such type of transducer is known as the resistive transducer. Ppt sensors and transducers powerpoint presentation. Ppt sensors powerpoint presentation free to download. Capacitive transducers the change in capacitance in response to a measurand has many applications in physical transducers. They can be used for measuring various physical quantities like temperature, pressure, displacement, force, vibrations etc. Best powerpoint templates download your favorites today. Transducers ppt electrical resistance and conductance.
Transducers transducers as already defined, is a device that converts a non electrical quantity into an electrical quantity. Electrical device which has a useradjustable resistance. It is useful to anyone studying measurement systems and instrumentation but it is provided mainly in support of the ec module d227 control system engineering. For example resistive capacitive inductive transducers. The following are the applications of the resistive transducer. The strain gauge, photoresistor, photodiode, phototransistor, and thermistor come under resistive type passive transducers. No transducer is sensitive to one physical energy only consider a small volume dv in which transducer is placed the energy content dw in this volume contains the summation of all possible energies ii intensive quantity can carry power, e. Displacements, velocity, acceleration, force, pressure, vacuum, flow, fluid level, audio sound field, and relative humidity can be measured using capacitive transducers. Ppt sensors powerpoint presentation free to download id. The capacitive transducer is the capacitor with variable capacitance. The variable resistance transducers are one of the most commonly used types of transducers. Different types of transducers for level sensing includes resistive transducer 1, which can be more accurately called potentiometric transducer, uses conductivity property of water and sliding. The sensor has a resistive element and a sliding contact wiper.
A combination of these devices can be seen in an automotive application where the switch is used to indicate tank low level and the potentiometer. Strain gauges are pressuresensitive resistive bridge networks that are external biased excitation signal in. Powerpoint slide on digital transducers compiled by jandeep. The transduction mechanisms are based on the change in resistance brought about by the measured.
The following law relates the resistance and temperature. Tutorial about electronic sensors and transducers used as input and output devices to measure. Displacement position and proximity transducers float transducers are used in tank level monitoring applications. These transducers usually rely upon magnetic inductance or piezoelectric effects to produce their output. Nonelectrical quantity such as force, displacement. Resistive transducer material in which the resistance due to a change in some physical phenomenon. To measure the displacement of the body, which is movable, is connected to the sliding element located on the potentiometer. For example a loudspeaker is a transducer that transforms electrical signals into sound energy. The variable resistance transducers are also called as resistive transducers or resistive sensors.
Best powerpoint template collection network solutions protects your online transactions with secure ssl encryption. Electrical powerpoint templates w electricalthemed. Resistance transducer article about resistance transducer. Introduction to transducers, introduction to transducers. Normally a transducer and associated circuit has a non electrical input and an electrical output. Apr 21, 2019 resistive transducers objective questions instrumentation tools assists you with a complete guide of objective questions which mainly targets the aspirants of electrical, electronics and instrumentation engineering streams to crack the competitive exams and to prepare for the top mnc companies written tests. Transducers definition of transducers classification. Transducers transducer a device that converts a primary form of energy into a corresponding signal with a different energy form primary energy forms.
Levels measurement can be continuous or discontinuous 2. A new teds template is proposed, and filling examples are presented. Usually, this is a threeterminal resistor with a sliding contact in the center the wiper if all three terminals are used, it can act as a. Transducer temperature transducers thermocouples resistance temperature detectors rtd thermistors resistive position transducers displacement transducers strain gauge thermocouple. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc. Hard to support multitouch, such as zoom in and zoom out in your iphone and ipad. At room temperature, the resistance of the thermistor is 1 k what happens to resistance as we increase temperature. Introduction to transducers, sensors, and actuators participant guide description and estimated time to complete this unit familiarizes you with transducers, sensors, and actuators and helps you understand the difference between them. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Require an external source of power excitation voltage that provides the majority of the output power of the signal 2 passive sensors. They have a common working principle, which states that the measured parameter results in a small change in the resistance of a transducer. Potentiometer the translation and rotatory potentiometer are the examples of the resistive transducers. Introduction to transducers introduction to types of transducers.
Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Resistive transducers objective questions instrumentationtools. Mar 31, 20 on the basis of transduction form used resistive transducers. Resistive sensing has the advantage that it is not sensitive to parasitic capacitances, and thus can be used in small sizes and at longer distances of cabling. The capacitive transducer is used for measuring the displacement, pressure and other physical quantities. Electronic powerpoint template is a blue template for powerpoint presentations with electronic background effect to be used in presentations for technology projects. This ezed video explains transducers types of transducers electrical transducer mechanical transducer thermal transducer resistive transducer inductive transducer.
Resistive transducer there are 4 type of resistive transducers. The average life of the display system varies from 2 to 3 years depending upon the make and model of the cng kit. It is a passive transducer that means it requires external power for operation. Electrical transducers the electrical transducers is one which converts the non electrical quantity into the equivalent electrical quantity. Transducer temperature transducers thermocouples resistancetemperature detectors rtd thermistors resistive position transducers displacement transducers strain gauge thermocouple. Temperature transducers resistive position transducer capacitive. The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal.