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unit 15 transducers and sensors
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BTEC Assignment BriefQualification Pearson BTEC Level 3 National Extended Diploma in Applied Science
Unit number and title Unit 15: Electrical Circuits and their Applications
D: Examine the uses of transducers, sensors and other measurement
Learning aim
devices.
Assignment title Transducers and Sensors
S. Barnes
Assessor
Ismail sidat
Learner Name
07/03/2022
Issue date
25/03/2022
Hand in deadline
You are a trainee laboratory technician working for a
telecommunication company who specialise in communication
infrastructure.
You have been tasked to put together a report to help the sales team
Vocational Scenario or understand some of the key components used.
Context
Carry out research into the common uses of transducers, sensors
and other measuring devices. Investigate their construction and
operation through laboratory practical work.
Produce a report on the applications and operation of components
and devices that contains the following sections:
Section 1 – Transducers, sensors and measuring devices
Task
Describe, using practical circuit investigations and a range of
measurement devices (e.g. multi-meters, data logger), the
principles of operation of the following types of transducers:
Passive (sensors)
Active
Evaluate the suitability of the measuring devices used in your
circuits.
Describe in detail the construction and principles of operation
of a piezoelectric device and explain the need for amplification
of the signal from the device.
Evaluate the effectiveness of a thermocouple for a named
application. You should include a variety of industrial
thermocouples, the classification of each thermocouple with
technical specifications of temperature range, potential
difference, current and resistance.
Suggest a suitable use for your thermocouple and how it would
, operate in your example.
Section 2 – Sensing and Measuring
Construct suitable circuits and record your findings to illustrate
the operational principles of the following sensors:
- CO2 sensor and light sensor
Evaluate the suitability of each sensor tested in terms of their
practical applications, providing useful examples in the real
world
You should include photographs or video footage of all your practical
demonstrations as additional evidence.
Checklist of evidence A report that contains explanatory notes, circuit diagrams, and video or
required photographic evidence of practical work covering:
The uses and basic operational principles of a range of active
and passive transducers, sensors and other measuring devices
listed in the tasks
A demonstration and evaluation of the principles of use of a
suitable thermocouple for a named application. Include
accompanying circuit diagrams and technical data to support the
choice of a specific type of thermocouple for this use
Report on sensors and measuring devices
Learner practical work / results needs to be verified by teacher
Criteria covered by this task:
Unit/Criteria
To achieve the criteria, you must show that you are able to:
reference
Evaluate the use of transducers, sensors and measurement devices in practical
D.D3
situations in terms of their fitness for purpose
Demonstrate the correct basic principles and uses of transducers, sensors and
D.M5
electrical measurement devices in practical situations
Describe the basic principles of operation of transducers, sensors and electrical
D.P5
measurement devices
Sources of information http://www.calpoly.edu/~gthorncr/ME236/documents/Exp2.pdf
to support you with this
Assignment http://www.globalspec.com/learnmore/optics_optical_components/
optoelectronics/lux_meters_light_meters
Centres are encouraged to include local employers in delivery by asking
them to give guest lectures and provide opportunities for industrial
visits and work experience.
Other assessment n/a
,materials attached to
this Assignment Brief
Mercury vs digital thermometer
Aim –compare a digital and mercury thermometer for measuring the temperature for a cup of water
cooling in 30 min
Hypothesis- I think that the mercury thermometer will cool faster.
Risk Assessment
Risk Why is it a risk What can you do to prevent it
Mercury Thermometer may It may spill Handle with care
break
Hot water Can harm your skin and could Handle with care
spill
Thermometer It could break Handle with care
Method
1) set the apparatus up as shown in the diagram
2) heat the kettle up
3)pour the water in the beaker around 150ml
4) make sure the thermometer is touching the water
5) measure every minute
Results table
Time / mins Mercury Thermometer /c Digital Thermometer /c
0 91 56.4
1 87 84.8
2 85 82.7
3 81 80.2
4 80 78
5 78 75.6
6 76 73.8
7 74 72.1
8 72 70.3
9 70 68.5
10 69 67.1
11 68 66.1
12 68 64.5
13 66 63.4
14 64 62.1
, 15 63 60.8
16 62 59.8
17 60 58.6
18 60 57.5
19 59 56.6
20 58 55.8
21 57 54.6
22 56 54.1
23 55 53.1
24 54 52.3
25 54 51.7
26 53 50.9
27 52 50.3
28 49 49.5
29 49 48.9
30 48 48.1
conclusion
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