Short Title:Measurement Systems
Full Title:Measurement Systems
Module Code:MESY H1002
Credits: 5
NFQ Level:6
Field of Study:Mechanics and metal work
Module Delivered in 3 programme(s)
Module Description:The aim of the subject is to provide the student with the ability to use measurement methods in lab work throughout the course and in professional life.
Learning Outcomes
On successful completion of this module the learner will be able to:
LO1 Identify sources and types of measurement errors.
LO2 Differentiate between accuracy, precision and resolution in measurement systems.
LO3 Describe the uses of temperature, proximity and strain transducers and bridge type signal conditioning systems.
LO4 Explain the principles of 'GO' and 'NO GO' gauges, limits and fits and gauge blocks.
LO5 Calibrate a basic measuring instrument ( Micrometer to BS 870).
LO6 Explain the principles of angular measurement.
LO7 Describe the principles of surface metrology and calculate surface roughness by various methods.
LO8 Use and describe operation of a Laser micrometer, Optical Profile Projector and CMM.
Pre-requisite learning
Co-requisite Modules
No Co-requisite modules listed

Module Content & Assessment

Content (The percentage workload breakdown is inidcative and subject to change) %
Measurement Systems:
Functional elements of a measurement system; sensors, signal conditioning, data display/ recording. Thermistors, strain gauges, wheatstone bridge circuit, variable area capacitors, piezoelectric accelerometer, thermocouples.
Measurement Characteristics:
Measurement error; systematic and random, sources and possible fixes. Static characteristics; accuracy, precision, resolution and sensitivity. Dynamic characteristics; zero order, first order, second oder response. Damping, response time, settling time.
Measurement Instrumentation:
Vernier calipers, Micrometer screw gauge, calibration of the micrometer to BS 870, metric gauge blocks.
Angular Measurement:
Background theory of precision balls and rollers. Sine bar.
Limit Gauges:
Inspection vs measurement. Taylor's theory of gauging, manufacturing tolerances, wear allowance. Pin gauges, gap gauges.
Background Theory of Limits and Fits:
Hole based systems, Shaft based systems, BS4500. Clearance fit, transition fit and interference fit.
Precision Measurement Instrumentation:
Operation principles of Optical Profile Projector (OPP), Surface measuring equipment, Laser Micrometer and Coordinate Measuring machine (CMM).
Assessment Breakdown%
Course Work30.00%
End of Module Formal Examination70.00%
Course Work
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Laboratory A written individual lab report is required on one of the following three: Velocity measurement systems, Temperature measurement systems, Strain measurement systems. 2,3 10.00 Week 5
Laboratory A written individual lab report is required on one of the following three: Optical profile projector, Surface roughness measurement using the Hommell, Angle measurement. 6,7,8 10.00 Week 8
Laboratory A written individual lab report is required on one of the following three: Gauge block use, Calibration of the Micrometer to BS 870, Using Micrometer and CMM. 4,5,8 10.00 Sem 1 End
End of Module Formal Examination
Assessment Type Assessment Description Outcome addressed % of total Assessment Date
Formal Exam End-of-Semester Final Examination 1,2,3,4,5,6,7,8 70.00 End-of-Semester

IT Tallaght reserves the right to alter the nature and timings of assessment


Module Workload

Workload: Full Time
Workload Type Workload Description Hours Frequency Average Weekly Learner Workload
Lecture Class work 2.00 Every Week 2.00
Lab Practical work 2.00 Every Week 2.00
Independent Learning Outside of class 3.00 Every Week 3.00
Total Weekly Learner Workload 7.00
Total Weekly Contact Hours 4.00
This module has no Part Time workload.

Module Resources

Required Book Resources
  • Francis T. Farago and Mark A. Curtis 1994, Handbook of Dimensional Measurement, Industrial Press New York, NY [ISBN: 0831130539]
  • John Gayler and Charles Shotbolt 1990, Metrology for Engineers, 5th Ed. Ed., Cassell
Recommended Book Resources
  • Peter Elgar 1998, Sensors for Measurement and Control, Longman Essex, England [ISBN: 9780582357006]
This module does not have any article/paper resources
This module does not have any other resources

Module Delivered in

Programme Code Programme Semester Delivery
TA_EAMEC_B B.Eng(Hons) in Mechanical Engineering [Ab Initio] 2 Mandatory
TA_EAMEC_D Bachelor of Engineering in Mechanical Engineering 2 Mandatory
TA_EAUTO_D Bachelor of Mechanical Engineering (Automation) 2 Mandatory