Engineering Metrology and Measurements - EMM Study Materials | PDF FREE DOWNLOADInstrumentation is a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities such as flow, temperature, level, distance, angle, or pressure. The term has its origins in the art and science of scientific instrument-making. Instrumentation can refer to devices as simple as direct-reading thermometers , or as complex as multi-sensor components of industrial control systems. Today, instruments can be found in laboratories, refineries, factories and vehicles, as well as in everyday household use e. Elements of industrial instrumentation have long histories. Scales for comparing weights and simple pointers to indicate position are ancient technologies. Some of the earliest measurements were of time.
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Analog and digital instruments 1. To judge the possibility of making some of the defective parts acceptable after minor repairs. Place the set of slip gauges under one end of the roller of sine bar such that engineerjng upper surface of the work piece is approximately parallel with the table surface? This again reduced the number and amount of time process operators were needed to walk around the units.Slip gauges are rectangular blocks of high grade steel or tungsten carbide with less co-efficient of thermal expansion. Contacting and non contacting instruments 6. Instrumentation is a collective term for measuring instruments that are used for indicatin. Other Useful Links!
Readability is defined as the closeness with which the scale of an analog instrument can be read. Thank you. Anti-skid braking systems use sensors to control the brakes, while cruise control affects throttle position. Data presentation element Basic units in SI system: 3 For Time : Second s which is equal to the duration of periods of the radiation corresponding to the transition between the hyper fine levels of the ground state of the Caesium atom.
Instrumentation for Process Measurement and Control 3 ed. Evolution of measurement - cordinate measuring machines - Non cartesian CMMS - Accessory elements Application software - Performance evalutions -Temperature fundamentals - Environmental control - Accuracy enhancement - Applications - Measurement integration. Definition of metrology-Linear measuring instruments: Vernier, interval meas? Galyer.
Hiller, Anything want to say, it is moved too ? Is our service is satisfied. Log In Sign Up.Programmable logic controller Timeline of temperature and pressure measurement technology. The error in the work angle is the difference in the two readings on the illuminated scale. Evolution of measurement - cordinate measuring machines - Non cartesian CMMS - Accessory elements Application software - Performance evalutions -Temperature fundamentals - Environmental control - Accuracy enhancement - Applications - Measurement integration. Look up instrumentation in Wiktionary, the free dictionary?
For any quarries, We assured you we will do our best. Mechanical energy is converted in to heat through dry friction between the Wooden brake blocks and the flywheel of the machine. Sine table: It is the most convenient and engineerign design for heavy work piece. It implies the ease with which observations can be made accurately.
Radius measurement Surface finish measurement Straightness measurement Flatness measurement Roundness measurement. General concept Generalised measurement system: Measurement is a comparison of a given quantity with one of its predetermined standard values opted as a unit. There are two important requirements of the measurement:. Example: Weight of a substance is measured directly using a physical balance. To ensure that the part to be measured conforms to the established standard. To meet the interchangeability of manufacture.
Uses of Comparator: Enginefring calibrating the working gauges Used as working gauges Used as final inspection gauges Essential characteristics of a good Comparator: Classification of comparators: 1 Mechanical comparator a Dial indicator b Johansson Mikrokator comparator c Sigma comparator d Reed type mechanical comparator 2 Optical comparator: a Zeiss Ultra optimeter b Zeiss optotest comparator 3 Mechanical Optical comparator Page 13 of 35 Einstein College of Engineering Robust design and construction Linear characteristics of scale High magnification Quick in results Versatility Minimum wear of contact point Free from back lash Instru,entation insertion of work piece Provision for compensation from temperature effects Provision for means to prevent damage during use. Thank you for visiting my thread. Gupta Book Free ! Ashok Kumar Rajendran!
Direct angular measurement Run out Lead Backlash. Foundations of Chemistry. Such devices could control a desired output variable, and provide either remote or automated control capabilities. Sub Code: ME54 work.