Basic discussion on Transducers types and its working. Automation field uses all kind of transducers or sensors.

1. By
BHUSHAN KUMBHALKAR

2. Introduction
 A transducer is a device that converts energy from one
form to another for various purposes like measurement
or Information transfer eg.,Pressure sensors.
 Device which converts one physical quantity or
condition to another
 Physical quantity – heat , intensity of light, flow rate,
liquid level, humidity etc

3. Transducer
(conversion)Any measureable
quantity in
Anything
out
eg. any measurable quantity:
• energy: sound, electrical, mechanical,
light, chemical,
• pressure, level, density, temp, pH, flow,
temperature
• position, distance, mass, time
• etc, etc.
eg. any measurable quantity:
• energy: sound, electrical, mechanical,
light, chemical,
• pressure, level, density, temp, pH, flow,
temperature
• position, distance, mass, time
• etc, etc.

4. Classification of transducers
usable
values
real
world
analog
signal
primary
transducer
secondary
transducer
sensor actuator

5. LVDT
Use along with bourdon tube & bellows to determine the
displacement , pressure etc

6. Classification of transducers
 There are many ways to classify transducers:
 By what they are measuring
 General classification.
 Specific classification.
 By the output signal type.
 By whether or not they produce their own supply.
(Active or Passive)
 Input to output.
 Contact type or not
 Direct or indirect.
 Method used to sense input.

7. BELLOWS

8. Thermister

9. Temepeture sensing circuit
Used for air-coditionar , motors etc

10. LDR (Light Dependent Resistors)

11. Light sensing Circuit

12. DIPHRAGM
Use to sense pressure ,temperature etc

13. Thank you!