Temperature Sensor || Type, Application And Advantage Of Temperature Sensor.
Summary
TLDRIn this Vitas Communication tutorial, we explore the world of temperature sensors, crucial for measuring heat or coldness across various applications like medical research and electronics. We delve into different types, including contact (thermometers, thermocouples, thermistors, RTDs, and semiconductor sensors) and non-contact (infrared sensors), each with unique operating parameters. Learn about their applications in electric models, HVAC systems, and renewable energy, along with their advantages in controlling temperatures and preventing overheating, ensuring safety and efficiency.
Takeaways
- π‘οΈ Temperature sensors are crucial for measuring the degree of hotness or coldness of a body and are used across various applications.
- π There are two main types of temperature sensors: contact and non-contact, each with specific operating parameters and varieties.
- π‘ Contact temperature sensors require direct contact with the object and include thermistors, thermocouples, thermometers, RTDs, and semiconductor sensors.
- π‘οΈ Thermometers are basic contact sensors that measure temperature through the expansion of liquid within a calibrated glass tube.
- β‘οΈ Thermocouples are made by joining two dissimilar metals and produce a temperature-dependent voltage due to the thermoelectric effect.
- π Thermistors exhibit a change in resistance with temperature changes, with NTC and PTC types indicating resistance decrease or increase with temperature, respectively.
- π© RTDs (Resistance Temperature Detectors) offer high accuracy, with resistance directly proportional to temperature, and are made from metals like platinum and nickel.
- π Semiconductor sensors, or IC temperature sensors, offer high linearity and accuracy and are available in various output types like current, voltage, resistance, diode, and digital.
- π Non-contact temperature sensors, such as infrared sensors, detect temperature without touching the object by sensing infrared radiation.
- π’ Temperature sensors have wide applications in electric models, HVAC systems, renewable energy, rubber and plastic industry, and biomedical applications.
- π― The advantages of using temperature sensors include easy control of various temperatures in motors, electric cables, engine oils, room conditions, and water heaters, leading to energy efficiency and safety.
Q & A
What are the primary applications of temperature sensors?
-Temperature sensors are used in a variety of applications including medical research, labs, electrical or electronic components, and controlling equipment in various industries.
What are the different types of temperature scales on which temperature is measured?
-Temperature is measured on scales such as Fahrenheit, Celsius, or Kelvin.
What is the function of a temperature sensor?
-A temperature sensor is an electronic device that measures temperature and converts it into a signal.
What are the two main categories of temperature sensors discussed in the script?
-The two main categories of temperature sensors discussed are contact temperature sensors and non-contact temperature sensors.
What is a thermometer and how does it measure temperature?
-A thermometer is a basic type of contact temperature sensor that measures the temperature of a solid, liquid, or gas. It contains a liquid inside a glass tube that expands when heated, and a calibrated scale is used to indicate the temperature.
How does a thermocouple work and what are its classifications?
-A thermocouple works by joining two dissimilar metals to produce a temperature-dependent voltage due to the thermoelectric effect. It is classified into types like K, J, T, E, B, R, S, and N based on temperature ranges, durability, and resistance values.
What is a thermistor and how does it respond to temperature changes?
-A thermistor is a temperature sensor that shows a change in resistance due to a change in temperature. It is made from materials like ceramic and polymers and comes in two types: NTC (negative temperature coefficient) where resistance decreases with increasing temperature, and PTC (positive temperature coefficient) where resistance increases with increasing temperature.
What is an RTD and what is its range of measurement?
-An RTD (Resistance Temperature Detector) is one of the most accurate sensors where resistance is directly proportional to temperature. It is made from metals like platinum, nickel, and copper and can measure temperatures from -270Β°C to 850Β°C.
What are the different types of outputs for semiconductor sensors?
-Semiconductor sensors, also known as IC temperature sensors, are classified into five types: current output, voltage output, resistance output, diode output, and digital output temperature sensors.
How do non-contact temperature sensors work and what are their classifications?
-Non-contact temperature sensors work by sensing characteristics of the surrounding environment by either emitting or detecting infrared radiation without requiring contact with the object. They are classified into thermal infrared sensors and quantum infrared sensors.
What are some advantages of using temperature sensors?
-Using temperature sensors allows for easy control of motor temperature, prevention of overheating in electric cables, automatic control of room temperature and humidity, and monitoring of water temperature for energy efficiency. They also have applications in renewable energy and various industries.
Outlines
π‘οΈ Introduction to Temperature Sensors
This paragraph introduces the topic of temperature sensors, emphasizing their importance in various applications such as medical research, labs, and electronic components. It explains that temperature is a physical quantity measured on scales like Fahrenheit, Celsius, or Kelvin. The paragraph outlines the different types of temperature sensors available in the market, including contact and non-contact sensors, and briefly describes each type. Contact sensors, which require direct contact with the object, include thermistors, thermocouples, thermometers, RTDs, and semiconductor sensors. Non-contact sensors, which measure temperature indirectly, are exemplified by infrared sensors. The paragraph provides a brief on thermometers, explaining how they measure temperature through the expansion of liquids, and mentions the calibration scales used for temperature readings.
π Types and Applications of Temperature Sensors
This paragraph delves into the specifics of various temperature sensors, starting with thermistors, which are resistors that change resistance with temperature. It differentiates between NTC (negative temperature coefficient) and PTC (positive temperature coefficient) thermistors. It then discusses RTDs, which are highly accurate sensors with resistance directly proportional to temperature, typically made from metals like platinum, nickel, and copper. The paragraph also touches on semiconductor sensors, known for their high linearity and accuracy. It explores the applications of temperature sensors in electric models, HVAC systems, electric cables, renewable energy, rubber and plastic industry, and biomedical industry. The advantages of using temperature sensors are highlighted, such as controlling motor and cable temperatures, engine oil and bearing temperatures, room and water temperatures, and geothermal drilling temperatures.
Mindmap
Keywords
π‘Temperature Sensors
π‘Contact Temperature Sensors
π‘Thermometer
π‘Thermocouple
π‘Thermistor
π‘RTD (Resistance Temperature Detector)
π‘Non-Contact Temperature Sensors
π‘Infrared Sensors
π‘Applications of Temperature Sensors
π‘Advantages of Temperature Sensors
Highlights
Introduction to temperature sensors and their importance in various applications.
Definition of temperature as a physical quantity and its measurement scales like Fahrenheit, Celsius, or Kelvin.
Explanation of temperature sensors as electronic devices that convert temperature into a signal.
Types of temperature sensors: contact and non-contact sensors.
Description of contact temperature sensors and their need for direct contact with the object.
Introduction to thermometers as basic contact temperature sensors.
Explanation of thermocouples, their construction, and the thermoelectric effect.
Classification of thermocouples based on temperature ranges, durability, and resistance values.
Definition of thermistors and their change in resistance with temperature.
Differentiation between NTC and PTC thermistors based on their temperature coefficient.
Introduction to RTD (Resistance Temperature Detector) sensors and their accuracy.
Materials used in RTD sensors and their temperature measurement range.
Methods to measure temperature using RTD and the need for an external current source.
Overview of semiconductor sensors and their classification based on output types.
Advantages of temperature sensors in controlling motor temperature and preventing overheating.
Applications of temperature sensors in HVAC systems for controlling indoor temperatures.
Use of temperature sensors in renewable energy applications like solar heating and wind power.
Benefits of temperature sensors in biomedical industry for accurate temperature measurements.
Summary of the advantages of using temperature sensors in various industries and applications.
Transcripts
hello everyone welcome to my channel act
Vitas communication tutorial here I will
be discussing about temperature sensors
so let's move on to the content part
here we will discuss voltage temperature
sensor its types application and
advantages temperature is the most
commonly measured physical parameter
whether we talk about processing this
floor we heat a laboratory so exact
measurements are needed for many
applications such as medical research
labs electrical or electronic components
so temperature sensors are used to
measure temperature makes circuits which
control various types of equipment
temperature is a physical quantity which
measures the degree of hotness or
coldness of a body measured on a
definite scales such as Fahrenheit
Celsius or Kelvin a temperature sensor
is an electronic device that measures
temperature and convert it into a signal
to drink or
different types of temperature sensors
used in markets today so let's study
about these project I surf ID as contact
temperature sensors and non-contact
temperature sensors each of them has
particular operating parameters and they
come in different varieties but they
have one thing in common they all
measure temperature
contact temperature sensors and those
switched require direct contact with the
physical object that is being monitored
under this comes thermistor thermocouple
thermometer RTD that is resistance
temperature detector semiconductor
sensors and section it sensors are those
that indirectly measures temperature of
an object for example infrared sensors
IR sensors let's get a brief idea about
contact temperature sensors so first one
is thermometer it is a very basic type
of temperature sensor contact sensor
turn you meter we all know is a
combination of two words thermal that
means heat and meter that means to
measure so thermometer basically
measures temperature of a solid liquid
or gas
a turbo motive has a liquid inside its
glass you either it is mockery on
Alphaville
and when this liquid is heated it
expands inside the thermometer too and
it has a calibrated scale which is used
to indicate that temperature temperature
can be recorded in these scales has
Fahrenheit Celsius or Kelvin
so next temperature sensor is a
thermocouple it is a very commonly used
temperature sensor it is made by joining
two dissimilar metals one hand is called
the hole Junction and the other end is
called the cold Junction or the
reference n it produces a temperature
dependent voltage as a result of
thermoelectric effect thermocouples are
classified into different types
depending upon the different temperature
ranges durability and resistance values
we have type K type J type T type II
type n type s are
makes type of contact sensors third mr
deburr thermistor is derived from two
words thermal and resistor so thermistor
shows change in resistance due to change
in temperature and this resistance
depends upon the type material being
used generally they are made from
ceramic and polymers thermal stills are
of two types NTC and ptc MTC is negative
temperature coefficient that means
resistance decreases with increasing
temperature and PTC that is positive
temperature coefficient that means
resistance increases with increasing
temperature coming to the mixed contact
sensor is RTD that is resistant feature
detector it is one of the most accurate
sensors here the resistance is directly
proportional to temperature and it is
made from metals like platinum nickel
copper etc it is used to measure
temperature in the range of minus 270
degree centigrade to 850 degree
centigrade
there are various methods to measure the
temperature using RTD like to wire three
wire and four wire methods I will
discuss this in detail in my upcoming
videos also it requires an external
current source to function properly
the last sensor in this category is
semiconductor sensors these sensors are
also known as icy temperature sensors as
they come in the form of ICS that is
integrated circuits depending upon
different types of outputs they are
classified into five types like current
output temperature sensors voltage
output temperature sensors resistance
output temperature sensors diode
temperature sensors and digital output
temperature sensors accuracy and
linearity or the two static
characteristics and these sensors offer
high linearity and accuracy over the
operating range of 55 degree centigrade
to 150 degree centigrade moving on to
the next category Tartans non-contact
sensors we have already discussed what
is a non-contact sensor is so here is an
example
datas ir sensor or infrared sensors so
what is this infrared infrared is the
type of electromagnetic radiation in
visible range spectral range of red and
longer wavelength of microwave radiation
and it's frequency lies between that of
300 gigahertz to 400 tetra Hertz so
these sensors senses certain
characteristics offered surrounding like
temperature etc by either emitting or
detecting infrared radiations as we know
they are non-contact sensor therefore
they do not require any contact with the
object
these sensors are classified into two
types first thermal infrared sensors and
second quantum infrared sensors we will
discuss these in detail later on
so here is the application of sensors
being used in electric models for
sensing the motor voiding temperature
internal housing temperature bearing
temperature brushes temperature and
external body temperature also they are
used in heating ventilation and air
conditioning system for controlling the
temperature of shopping mall buildings
university buildings hospital buildings
and industrial commercial buildings
there are applications of sensing sound
they were used in electric cables for
measuring the cable internal temperature
and are used in form of heat shrink tube
or metal housing also they are used in
water incoming tubes for measuring the
water internal temperature they have
applications in renewable energy
applications such as solar heating pumps
biomass conversion applications wind
power applications etc they are also
used in rubber and plastic industry and
have many applications in biomedical
industry
coming to the advantages of using
temperature sensors by using this we can
easily control the motor temperature
also electric cables could be saved from
overheating using sensors sensors could
easily control the engine oil and
bearing temperature we can also control
the room temperature automatically can
also control the humidity and air
conditioning of buildings we can also
check water temperature and make it
switch on/off the water heater to
control our electricity bill in
geothermal applications they could
easily control the drilling temperature
so there are various advantages of using
temperature sensors
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