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Anglicky v odborných předmětech "Support of teaching technical subjects in English “

Anglicky v odborných předmětech "Support of teaching technical subjects in English “. Tutorial : Mechanic - electrician Topic : Electric measurement the 2nd. y ear Measuring devices 2 Prepared by: Ing. Jiří Smílek.

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Anglicky v odborných předmětech "Support of teaching technical subjects in English “

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  1. Anglicky v odborných předmětech"Support ofteachingtechnicalsubjects in English“ Tutorial: Mechanic - electrician Topic: Electric measurement the 2nd. year Measuringdevices 2 Prepared by: Ing. Jiří Smílek Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

  2. Measuring instruments - basic terminology • The measuring device consists: • measuring system - the physical nature of the conversion values ​​for torque • hand • dials with scales • control springs - directive (control) torque • damping • The measuring set consists: • measuring devices • bridges • auxiliary equipment

  3. Measuring instruments - basic terminology • Names of devices according to the measured quantities: • voltage - voltmeter • current - ammeter • resistance - an ohmmeter • power - wattmeter • frequency - frequency meters • power factor - (cosφ) - phase meters cos V A Ω W Hz

  4. Measuring instruments - basic terminology • The names of sets according to the measured variables: • Resistance - Wheatstone bridge • Inductance - Maxwell-Wien bridge

  5. The essence of of measuring devices • Types of measuring systems: • with a rotating magnet – 1 • magnetoelectric – 2 • electromagnetic – 4 • electrodynamic – 5 • ferodynamic - (electrodynamic with iron) – 6 • Induction – 7 • Thermal – 8 • electrostatic – 9 • Resonance – 10 • magnetoelectric with rectifier – 11 • magnetoelectric with thermocouple - 12

  6. The essence of measuring devices • Types of measurement device hands: • blade, filiform - accurate, laboratory instruments • lanceolate - Panel Meters • Reed - switchboard apparatus

  7. The essence of measuring devices • Types of rotating storage with handle: • cylindrical storage • very low friction, • impact is easily damaged. • pivot storage • larger friction than the cylindrical bearing • but mechanically robust.

  8. The essence of measuring devices • Types of scales of measuring devices: • uniform • Uneven • with suppressed zero

  9. Podstata měřicích přístrojů • Types of damping - damping is used to stabilize the displacement hands • magnetic • air

  10. Activities for students–questions • Name what constitutes a measuring device: • Name what constitutes a measurement set: Fill in the following table:

  11. Activities for students–questions • Name the 4 measuring systems and draw their symbols: • Name and draw the types of scales of measuring apparatus: • Name the types of damping

  12. Bibliography • Mužík, J. Management ve vzdělávání dospělých. Praha: EUROLEX BOHEMIA, 2000. ISBN 80-7361-269-7. • Operační program Vzdělávání pro konkurenceschopnost, ESF 2007 – 2013. • Dostupné na: http://www.msmt.cz/eu/provadeci-dokument-k-op-vzdelavani-pro-konkurenceschopnost • Učebnice Elektrická měření – Ing. Pavel Vylegala, SŠE Ostrava, 2006 • Učebnice Elektrické měření – SNTL, 1981 • Elektrotechnika - Laboratorní cvičení pro bakalářské studium - Doc. Ing. Miloš Hammer, CSc.

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