a5-Dimensional Calibration Technique - Dial Gauge-dial t
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Metrology Service Center PLT Dimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1 Trainer: Ng Yew Seong Page 1 of 5 Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected] DIMENSIONAL CALIBRATION TECHNIQUE On Dial Gauge and Dial Test Indicator (Concept & Practical) (3 Days Training) Introduction Metrology is the science of measurement that is included all theoretical and practical aspects of measurement. There are an infinite number of measurements are made every day in the world, especially in trade, industry, and scientific laboratories. The measurement results can be used to know the properties of the certain phenomenon in our daily live. A parameter under measurement can be either a physical parameter (Physical Metrology) or an analytical or chemical parameter (Chemical Metrology). The measurement based on the application of the measurement result leads to three branches of metrology; there are legal metrology, industrial metrology, and scientific metrology. In the field of scientific metrology, there are three types of laboratories; calibration laboratory, testing laboratory and research & development laboratory. All measurements made in calibration laboratories are using some type of testing and measuring instruments, such as reference measuring instruments, standard chemicals, and certified reference materials. A measurement result is valid only if it has been made with a measuring instrument that has been calibrated. Calibration is the process of ensuring the integrity accuracy of measuring instruments that is the accuracy of a measuring instrument compares with an appropriately calibrated laboratory reference standard. The process of calibration not just ensures the traceability of measurement results to national standards but also the measurements of uncertainties have to identify for the measurements are made. The calibration process is also sometimes called the calibration system, which has been defined as the collection of operations, procedures, device for measuring and other equipment, software, and personnel used to assign a number to the characteristics being measured, then this complete process used to obtain the measurement result. Calibration systems are used to verify that instruments or materials meet the requirements. This is an important activity used the measurement results to justify that instruments or materials are complying with their specifications. The calibration laboratory objective or fulfil customer satisfaction can be achieved by proper laboratory management system and competency on the calibration skill. These requirements can be referred ISO/IEC 17025: General requirements for the competence of testing and calibration laboratories, and SAMM (Laboratory Accreditation Scheme of Malaysia) that is cover management and technical requirements for calibration laboratory. The international standard methods of calibration published by ASME, ASTM, BS, JIS, MS, NIST and so on is available as references for competency on calibration skill. The fulfilments of these requirements, the laboratory shall have appropriate guidelines in management, calibration techniques, documentation, and control of records or data and so on. One of the most importance documents is standard operating procedure that may cover the step by step to perform calibration and calculation of measurement errors and uncertainties. Dimensional Metrology or dimensional measurement is using physical measurement equipment to quantify the physical size of or distance from any given object. Dimensional measurement requires the use of a variety of physical scales to determine the dimension, with the most common tools are calipers, micrometers, dial test indicator, height gauges, measuring scopes and so on, and for three-dimensional measurement such as coordinate measuring machine up to be most accurate at these being laser interferometers. The end of this measurement traceability is defined as the length of the path traveled by light in a vacuum during a time interval of 1/299,792, 458 of a second. It is no longer defined as a material artifact and unit is meter or “m”.
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Transcript of a5-Dimensional Calibration Technique - Dial Gauge-dial t
Metrology Service Center PLTDimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1
Trainer: Ng Yew Seong Page 1 of 5Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected]
DIMENSIONAL CALIBRATION TECHNIQUEOn Dial Gauge and Dial Test Indicator
(Concept & Practical)(3 Days Training)
Introduction
Metrology is the science of measurement that is included all theoretical and practical aspects ofmeasurement. There are an infinite number of measurements are made every day in the world,especially in trade, industry, and scientific laboratories. The measurement results can be used to knowthe properties of the certain phenomenon in our daily live. A parameter under measurement can beeither a physical parameter (Physical Metrology) or an analytical or chemical parameter (ChemicalMetrology). The measurement based on the application of the measurement result leads to threebranches of metrology; there are legal metrology, industrial metrology, and scientific metrology. In thefield of scientific metrology, there are three types of laboratories; calibration laboratory, testinglaboratory and research & development laboratory.
All measurements made in calibration laboratories are using some type of testing andmeasuring instruments, such as reference measuring instruments, standard chemicals, and certifiedreference materials. A measurement result is valid only if it has been made with a measuringinstrument that has been calibrated.
Calibration is the process of ensuring the integrity accuracy of measuring instruments that isthe accuracy of a measuring instrument compares with an appropriately calibrated laboratory referencestandard. The process of calibration not just ensures the traceability of measurement results to nationalstandards but also the measurements of uncertainties have to identify for the measurements are made.
The calibration process is also sometimes called the calibration system, which has been definedas the collection of operations, procedures, device for measuring and other equipment, software, andpersonnel used to assign a number to the characteristics being measured, then this complete processused to obtain the measurement result. Calibration systems are used to verify that instruments ormaterials meet the requirements. This is an important activity used the measurement results to justifythat instruments or materials are complying with their specifications.
The calibration laboratory objective or fulfil customer satisfaction can be achieved by properlaboratory management system and competency on the calibration skill. These requirements can bereferred ISO/IEC 17025: General requirements for the competence of testing and calibrationlaboratories, and SAMM (Laboratory Accreditation Scheme of Malaysia) that is cover managementand technical requirements for calibration laboratory. The international standard methods of calibrationpublished by ASME, ASTM, BS, JIS, MS, NIST and so on is available as references for competencyon calibration skill.
The fulfilments of these requirements, the laboratory shall have appropriate guidelines inmanagement, calibration techniques, documentation, and control of records or data and so on. One ofthe most importance documents is standard operating procedure that may cover the step by step toperform calibration and calculation of measurement errors and uncertainties.
Dimensional Metrology or dimensional measurement is using physical measurementequipment to quantify the physical size of or distance from any given object. Dimensionalmeasurement requires the use of a variety of physical scales to determine the dimension, with the mostcommon tools are calipers, micrometers, dial test indicator, height gauges, measuring scopes and soon, and for three-dimensional measurement such as coordinate measuring machine up to be mostaccurate at these being laser interferometers. The end of this measurement traceability is defined as thelength of the path traveled by light in a vacuum during a time interval of 1/299,792, 458 of a second. Itis no longer defined as a material artifact and unit is meter or “m”.
Metrology Service Center PLTDimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1
Trainer: Ng Yew Seong Page 2 of 5Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected]
Dial Gauge and Dial Test Indicator are one-dimensional measuring device and commonly usedin the industrial. The Dial Gauge can be measured the length up to 100mm, whereas Dial TestIndicator just measures the small length normally used to measure flatness and parallelism of a surface.The best discriminations for Dial Gauge and Dial Test Indicator are 10 micrometer and 1 micrometerrespectively for analog type, but for the digital or electronic type may have better discriminations. Thecalibration characteristics for these small tools are the discrimination, repeatability, adjacent errors andretrace errors of the linear travelling. The main factors for making quality of measurement results byusing these instruments is shall comply with Abbe’s law. When we rely on results of measurement,these factors must be established before making any measurement.
Scope
The national and international metrology organization and discipline of metrology may beclassified into legal, industrial, and scientific categories depending upon the application ofmeasurement results. The types of laboratories that are depending on their function, especiallycalibration laboratory will be introduced in this training.
This training provides knowledge of the calibration systems such as measurement traceability,measurement uncertainty, proficiency test to determine the uniformity of calibration performance,calibration procedures, method and technical skill to perform calibration follow metrologicalrequirements such as selection of appropriate reference standard instruments, collection data,calculation of errors and measurement uncertainty, recording calibration condition, preparationcalibration certificate and so on.
This training covers general knowledge of dimensional metrology tools as per mention of theabove. The maintenance and calibration, measurement awareness that includes the concept ofmeasurement, methods & technical skill to perform calibration, control of measurement errors and useMicrosoft Excel to document measurement uncertainties.
The references use in this training are ISO/IEC 17025, SAMM, JIS B7503 and BS 907. Thereference standards used for these calibrations are Precision Calibration Tester or Optimar 100 andgranite surface plate. The ranges of these units under calibration are 10mm for Dial Gauge and 1mmfor Dial Test Indicator.
Metrology Service Center PLTDimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1
Trainer: Ng Yew Seong Page 3 of 5Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected]
Training Objective
After seriously committed to this course, the trainee should be able to do the following:
1. Understand the principle concepts on measurement and calibration.
2. Know type of measurement errors and precaution about these errors.
3. Handle measuring devises in appropriate way.
4. Show confidence on calibration of the dimensional instruments
5. Estimate measurement uncertainties appropriately by using Microsoft Excel.
6. Monitor accuracy of dimensional instruments through calibration and maintenance program.
7. Interpret contain of the measurement results and calibration certificates.
8. Produce calibration certificate follow the metrological requirements.
9. Justify calibration principle and requirements for dimensional instruments.
10. Answer the questions are raised regarding the calibration of dimensional instrument during thequality auditing.
MethodologyTraining slides, Review Questions, Quiz, Case Study, Q&A and Calibration Demonstration.
Who Should Attend
Engineers, Technician and person closely concern with calibration and measurement.
Type of Industrial
The Calibration Laboratories, Institutions and the industries involve in calibration are part of theiractivity.
Summary Course Outline (Three Days Training)1) Metrology and Dimensional Measurement2) Calibration and Accreditation Laboratory3) The Application of Basic Statistical and Probability in Metrology4) Metrological Requirements5) Introduction to Dimensional Tools6) Standard Calibration Methods7) Standard Work Instruction for Dial Gauge and Dial Test Indicator8) Calibration Work Example by Using Microsoft Excel9) Multiple Choice Quiz Questions10) Appendix
Metrology Service Center PLTDimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1
Trainer: Ng Yew Seong Page 4 of 5Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected]
Detail Course Outline (Three Days Training)1. Dimensional Metrology
1.1. Introduction to Metrology1.2. Metrology Organization in Calibration1.3. Base Units1.4. Dimensional Measurement1.5. Dimensional Tools1.6. Review Questions
2. Calibration and Accreditation Laboratory2.1. Definition of Calibration2.2. Standards Used
2.2.1. ISO/IEC 17025 (Management and Technical Requirements)2.2.2. SAMM (Accreditation Requirements)2.2.3. Standard Calibration Methods2.2.4. Other Standards
2.3. Documentation2.4. Accommodation and Environmental Conditions2.5. Calibration Certificates2.6. Calibration Directories2.7. Scope of Accreditation2.8. Proficiency Testing2.9. Review Questions
3. The Application of Basic Statistical and Probability in Metrology3.1. Statistical3.2. Probability Distributions3.3. Review Questions
4. Metrological Requirements4.1. Measurement Traceability4.2. Measurement Uncertainty4.3. Review Questions
5. Introduction to Dimensional Tools5.1. Caliper5.2. External Micrometer5.3. Review Questions
6. Standard Calibration Methods6.1. Calibration Criteria
6.1.1. Linear Travelling Accuracy6.1.2. Measuring Faces Accuracy
6.1.2.1. Flatness6.1.2.2. Parallelism
6.2. Caliper, JIS B 7507: Vernier, Dial and Digital Calipers6.3. External Micrometer, JIS B 7502: Micrometer Calipers for External Measurement6.4. Review Questions
Metrology Service Center PLTDimensional Calibration Technique (Concept & Practical-Dial Gauge and Dial Test Indicator)-MTP0614R1
Trainer: Ng Yew Seong Page 5 of 5Contact: Cecilia Gan 012-6068326/03-51314215 email: [email protected]
7. Standard Work Instruction for Dial Gauge and Dial Test Indicator7.1. Purpose7.2. Scope7.3. References and Tolerances7.4. Calibration Standards (Masters) and Tools7.5. Environment Control7.6. Pre Functional Check (Unit Under Calibration)7.7. Check Sheet7.8. Calibration Steps7.9. Calculation on Measurement Errors and Uncertainties7.10. Judgments7.11.Post Functional Check7.12.Calibration Certificate7.13.Terminology and Nomenclature7.14.References
8. Calibration Work Example by Using Microsoft Excel8.1. Functions and Formulas8.2. Preparation Reports format8.3. Upload Calibration Data8.4. Generate Measurement Uncertainty Reports and Calibration Certificates8.5. Presentation of Calibration Certificates
9. Multiple Choice Quiz Questions9.1. Exercise (50 Objective Questions)
10. Appendix10.1.Terminology10.2.Statistical Table
11. References
