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  2. Pressure measurement - Wikipedia

    en.wikipedia.org/wiki/Pressure_measurement

    Pressure sensors can alternatively be called pressure transducers, pressure transmitters, pressure senders, pressure indicators, piezometers and manometers, among other names. Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit area.

  3. WIKA - Wikipedia

    en.wikipedia.org/wiki/WIKA

    The production in 1946 began with mechanical pressure and temperature gauges. The company held its position as one of the world market leaders also after the classical manometry was more and more replaced by electronic pressure and temperature measuring and display devices. In 2010 Wika produced more than 43 Million units.

  4. Deadweight tester - Wikipedia

    en.wikipedia.org/wiki/Deadweight_tester

    A dead weight tester (DWT) is a calibration standard method that uses a piston cylinder on which a load is placed to make an equilibrium with an applied pressure underneath the piston. Deadweight testers are secondary standards which means that the pressure measured by a deadweight tester is defined through other quantities: length, mass and ...

  5. List of measuring instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_measuring_instruments

    Headphone, loudspeaker, sound pressure gauge, for measuring an equal-loudness contour of a human ear. Sound level meter calibrated to an equal-loudness contour of the human auditory system behind the human ear.

  6. Budenberg Gauge Company - Wikipedia

    en.wikipedia.org/wiki/Budenberg_Gauge_Company

    In 1961 the individual states agencies for Australia came back under Budenberg Gauge Co., and Budenberg Australia Pty Ltd was set up with a factory in Melbourne. Two years later a third factory was opened in Amlwch, Anglesey. Budenberg Gauge remained a family-owned company from its inception in 1850 until 1991 when it was sold to Burnfield plc.

  7. McLeod gauge - Wikipedia

    en.wikipedia.org/wiki/McLeod_gauge

    A glass McLeod gauge, drained of mercury. A McLeod gauge is a scientific instrument used to measure very low pressures, down to 10 −6 Torr (0.133 mPa). It was invented in 1874 by Herbert McLeod (1841–1923). [1] McLeod gauges were once commonly found attached to equipment that operates under vacuum, such as a lyophilizer. Today, however ...

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