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Mahendra Singh Ppt

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GOVT ENGG COLLEGE AJMER 2012-2013 Presented To : Respected AJAY DADHICH Sir Presented By : MAHENDRA SINGH R.NO- 09EI22 A POWER POINT PRESENTATION ON THE TRAINING DONE AT TIPL (Toshniwal Industries Pvt. Ltd.)
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Page 1: Mahendra Singh Ppt

• GOVT ENGG COLLEGE AJMER• 2012-2013

Presented To :Respected AJAY DADHICH Sir

Presented By :MAHENDRA SINGH R.NO- 09EI22

A POWER POINT PRESENTATIONON

THE TRAINING DONEAT

TIPL(Toshniwal Industries Pvt.

Ltd.)

Page 2: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 2

TOSHNIWAL INDUSTRIES Pvt. Ltd.

company was set-up at Ajmer (Raj.)

since 1963, is manufacturing Industrial Measurement and Control Instruments

Page 3: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 3

TEMPERATURE MEASURING INSTRUMENTS

Thermocouple(TCs)

Resistance Temperature Detector (RTD)

Thermistors

Page 4: Mahendra Singh Ppt

04/07/2023 4

THERMOCUPLE

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04/07/2023 MAHENDRA SINGH 5

Seebeck effect-

When 2 dissimilar metallic

wires are joined together to

form a closed circuit an emf is

produced when any one of

these junctions are heated.

PRINCIPLE OF T/C

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04/07/2023 MAHENDRA SINGH 6

TYPICAL INDUSTRIAL THERMOCOUPLE ASSEMBLY

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04/07/2023 MAHENDRA SINGH 7

Type Element TemperatureRange

J Fe/constantan 196 to 760

K NiCr/NiAl(chromel/alumel)

-190 to 1371

T Cu/Constantan -190 to 399

E Chromel/constantan -196 to 999

N Nicrosil/Nisil 0-1280

R Pt(13%Rh)/Pt -18 to 1704

S Pt(10%Rh)/Pt -18 to 1760

T/C WITH TEMP RANGES

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04/07/2023 MANOJ MANDUSIYA 8

Page 9: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 9

Advantages:

– Self Powered (does not

require a current or voltage

source)

– Rugged

– Inexpensive

– Simple

Page 10: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 10

Disadvantages:

• Extremely Low

– Voltage output (mV)

• Not very stable

• Needs a reference point

Page 11: Mahendra Singh Ppt

04/07/2023 MANOJ MANDUSIYA 11

RTD

Page 12: Mahendra Singh Ppt

04/07/2023 12MAHENDRA SINGH

Resistance Temperature Detector- RTD

RTD (Resistance Temperature Detector) is a temperature

sensitive resistor.

It is a positive temperature coefficient device, which means that

the resistance increases with temperature.

The resistive property of the metal is called its resistivity.

The industry standard is the platinum wire RTD (Pt100) whose base resistance is exactly 100.00 ohms at 0.0 °C.

Page 13: Mahendra Singh Ppt

MAHENDRA SINGH

RTD, the basics

• Traditionally made up of

platinum, nickel, iron or

copper wound around an

insulator.

• Temperature range:

From about -200°C

to 650°C.

04/07/2023 13

Thin Film RTD

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04/07/2023 MANOJ MANDUSIYA 14

Page 15: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 15

GENERAL SPECIFICATIONS

• Resistance element : Pt.100,100 ohms at 0 degree C.

• No. of elements : Single or Duplex.

• Insulating resistance : 10 Mohms at 500V DC

between terminal and outer sheet.

• Temperature range : -50 degree C to +500 degree C.

Page 16: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 16

RTD TYPES

• 2-WIRE• 3-WIRE• 4-WIRE

3 TYPES RTD

Page 17: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 17

RTD Wiring Arrangements

Page 18: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 18

Advantages:RTD

– Stable

– Very accurate

– Change in resistance is linear

Page 19: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 19

Disadvantages:

– Expensive

– Current source required

– Small change in resistance

– Self heating

– Less rugged than thermocouples.

Page 20: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 20

Thermistor, a word formed by combining thermal with resistor, is a temperature-sensitive resistor fabricated from semiconducting materials.

The resistance of thermistors decreases proportionally with increases in temperature.

Thermistors

Page 21: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 21

Thermistors, the basics

The thermistors can be in the shape

of a rod, bead or disc. Manufactured from oxides of nickel,

manganese, iron, cobalt, magnesium,

titanium and other metals. Temperature Range about

-50°C to 315°C Generally made up of

semiconductor materials

Page 22: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 22

Advantages:

– Very sensitive (has the largest output change from input temperature)

– Quick response–More accurate than RTD and

Thermocouples

Page 23: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 23

Disadvantages:

– Output is a non-linear function– Limited temperature range from -50°C to 315°C.– Require a current source– Self heating– Fragile(easily damaged)

Page 24: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 24

Graphical comparision of Thermocouple, RTD, Thermistor

Page 25: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 25

PYROMETER

A pyrometer is a non-contacting device that intercepts and measures thermal radiation

Page 26: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 26

OPTICAL PYROMETER

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04/07/2023 MAHENDRA SINGH 27

Page 28: Mahendra Singh Ppt

04/07/2023 MAHENDRA SINGH 28

RADIATION PYROMETER

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04/07/2023 29

WORKING OF RADIATION PYROMETER

MAHENDRA SINGH

Page 30: Mahendra Singh Ppt

04/07/2023 MANOJ MANDUSIYA 30

FEATURES

• Wide temperature range 700 – 2000 º C or 700 – 3500 º C

• Fast response and sensitive measuring system• Light weight & portable• Two measuring ranges in each instrument• Operates on two 1.5V dry cells

Page 31: Mahendra Singh Ppt

for

Thanks

attention

Page 32: Mahendra Singh Ppt

Any Queries???


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