Basically THERMISTOR is a type of TRANSDUCER, which changes its resistance with change in temperature. TRANSDUCER, a device, which converts one form of.

Slides:

Advertisements

Similar presentations

Temperature Sensors By Grant Stucker.

Advertisements

Transducers PHYS3360/AEP3630 Lecture 33.

TEMPERATURE measurements

Semiconductor Input Devices

Met 163: Lecture 4 Chapter 4 Thermometry.

Temperature Measurement

Dept. of Electrical and Computer Engineering

Met 163: Lecture 4 Chapter 4 Thermometry. Thermoelectric Sensors The junction of two dissimilar metals forms a thermocouple. When the two junctions are.

TRANSDUCERS: VARIABLE RESISTIVE/CAPACITIVE/ INDUCTIVE

SENSORS & TRANSDUCERS.

Temperature Measurement using sensors and signal conditioning

Engineering 80 – Spring 2015 Temperature Measurements

Measurements in Fluid Mechanics 058:180:001 (ME:5180:0001) Time & Location: 2:30P - 3:20P MWF 218 MLH Office Hours: 4:00P – 5:00P MWF 223B-5 HL Instructor:

Pat Arnott, ATMS 360 Atmospheric Instrumentation Thermistors THERMal resISTORS A thermistor is a type of resistor used to measure temperature changes,

 Temperature sensors are the devices which are used to measure the temperature of an object.  These sensors sense the temperature and generate output.

Module 3 Eng. Asma Abu Baker. Introduction One of the most important uses of instruments or measuring devices is in the field of process control. If you.

Temperature Sensors.

Transducers/Sensors: Sample Device Thermistor A thermistor is a temperature-sensing element composed of semiconductor material (typically a mix of metal.

CHAPTER 6 TRANSDUCER.

CHAPTER 8 Sensors and Transducers.

Basics of Measurement and Instrumentation

Transducers/Sensors Transducer/sensor converts a non- electrical quantity, measurand, into a related electrical output signal Ideally there is a linear.

Twenty Questions Electronics. Twenty Questions

EKT 451/4 SEM 2 Chapter 6 SENSOR & TRANSDUCER SHAIFUL NIZAM MOHYAR

The energy change in a thermocouple is : 1.E E to E H 2.E S to E E 3.E L to E E 4.E H to E E :20.

Resistive Transducers Sensors Used in Electronics.

1 RTD (Resistance temperature detector) n Varying resistance with temperature n Good for measurement of small temperature differences n General equation.

Input, process and output When considering electronic systems we can say that it is made up of 3 main parts.When considering electronic systems we can.

Thermo-energy audit Services for thermo-energy audit Temperature measurement.

RESISTIVE, CAPACITOR, INDUCTIVE, PIEZOELECTRIC SENSOR Tae-eui, Kim.

CHAPTER 6 TRANSDUCER.

6.Temperature Transducer:- Temperature transducers can be divided into four main categories. 1. Resistance temperature detectors (RTD). 2. Thermocouples.

Chapter 2 Exercise Thermistor  Also called thermal resistor as the resistance varies as a function of temperature.  Manufactured in the form of beads,

Shree Swami Atmanand Saraswati Institute Of Technology Kathiriya Krishna Kheni Vaidehi Submitted to Prof.Pratik Desai Prof.Hetal.

1. 2 Meghanathi Gaurang k ( ) Pandey Prashant D ( ) Mishra sandip R ( )

ELECTRONIC INSTRUMENTATION EKT314/4

Engineering 80 – Spring 2016 Temperature Measurements 1 SOURCE: 3_standardbody__to-226_straightlead.jpg SOURCE:

Temperature Measurement with Thermistors Portland State University Department of Mechanical Engineering ME 121: Engineering Problem Solving.

ELECTRONIC INSTRUMENTATION

ELECTRONIC INSTRUMENTATION

Additional information on Passive Probes (10x) Take note that the scope’s input capacitance, C in must falls within the probe’s compensation range For.

TEMPERATURE MEASUREMENT: ELECTRICAL TEMPERATURE SENSORS DEPARTMENT OF CHEMICAL ENGINEERING G.H. PATEL COLLEGE OF ENGINEERING & TECHNOLOGY VALLABH VIDYANAGAR.

Transducers Saneeju M Salu.

The (IAT) sensor is mounted in the intake system so the tip will be exposed to the air entering the engine.

EKT 451 CHAPTER 6 Sensor & Transducers.

PREPARED BY:- ELECTRICAL MEASUREMENT&MEASURING instrument

1 Transducers EKT 451 CHAPTER 6. 2 Definition of a Transducers   Transducer is any device that converts energy in one form to energy in another.  

Electric Pressure Transducer

1 - An Introduction to Sensors P roduced at Warwick University by Margaret Low Simon Leigh

RESISTIVE TEMPERATURE TRANSDUCERS

Temperature Sensors.

Temperature Sensors.

TRANSDUCERS PRESENTATION BY: Dr.Mohammed Abdulrazzaq

Gujarat Power Engineering & Research Institute

Measurements & Instrumentation – Module 3

Thermal sensor By: Sanchari guha 15/IC/48.

By Anupam Prakash (3RD YR EIE) ROLL NO.:

EE 442 POWER ELECTRONICS I Introduction Dr. Said A. Deraz

TEMPERATURE SENSOR.

CHAPTER 8 Sensors and Transducers.

Passive Transducers Electricity Tutorial 6.

Resistance AIM: Understand resistance, calculate resistor values and know the characteristics of different types of resistors PRIOR KNOWLEDGE: Understand.

Thermistors THERMal resISTORS

Temperature Measurement

LDRs & Thermistors AIM:

Transducer & Sensor 1.

Describe the action of thermistors and light- dependent resistors and show understanding of their use as input transducers Thermistor A transducer is an.

Presentation transcript:

Basically THERMISTOR is a type of TRANSDUCER, which changes its resistance with change in temperature. TRANSDUCER, a device, which converts one form of energy into another form. Following are some examples which will give an idea about TRASDUCER. 1. Galvanometer 2. Microphone 3.Loudspeaker 4.LDR 5.Quartz crystal 6.Solar cell 7.Thermistor In industries, mostly transducers are used to convert non electrical quantity in electrical quantities.

TRANSDUCERS Passive transducers(externally powered) Active transducers(self- generating) e.g. LDR, thermistor e.g. Thermocouple, solar cell, piezo electric effect

THERMISTOR:- Thermistor is a temperature transducer & it belongs to passive type of transducer group, it can not generate self energy. It must be operated with an DC power supply. BASIC PRINCIPLE:- Thermistor is a transducer which changes its resistance when its temperature changes. basically, it has two types 1.PTC(Positive temperature co-efficient) 2.NTC(Negative temperature co-efficient) usually, thermistor has high negative temperature co- efficient of resistance.

Construction: Thermistor is a semiconductor device; it can be of NTC or PTC type. Usually NTC type is preferred than PTC. In NTC type resistance decreases with increase in temperature. In case of some thermistors it is about 5 to 6% per c. they are very sensitive & widely used in industries for temperature measurement & in temperature control system. Thermistor is capable of producing electrical variation when stimulated by some physical form of energy, & which does not require external power supply to perform its function.

They are also known as temperature sensors, they are used for measuring temperatures. Thermistor is composed of a sintered mixture of a metal – oxides like Mn,N,Co,Fe and uranium. They are available in different packages such as disk type, washer type, bead & bulb type. Bead type thermistors are more popular having diameter about 0.15 mm. Diameters of other types are about from 2.5 to 25 mm.

1.Small in size & low cost. 2.Comparatively large change in temperature for a given change in temperature. 3.Fast response over a narrow temperature range. 1.The resistance versus temperature characteristic is highly non- linear. 2.Not suitable over a wide range of temperature. 3.Because of high resistance of thermistor, shielded cables have to be used to minimize interference. 4.Requires whetstone bridge circuit & external power source for measurement. Advantages of Thermistor Disadvantages of Thermistor

Typical range of thermistors is from 0.5Ω to 100 MΩ Temperature range is from -100 to 300 APPLICATIONS Thermal transducers commonly used in verity of application such as: 1.Thermometer 2.Temperature controlled soldering iron. 3.Gas detector. 4.Furnace control. 5.In different temperature regulators.

THANK YOU….. Ani…