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Mechanics and Acoustics

Division 1

Weight, force, velocity, loudness -€“ the mechanical and acoustic quantities are cared for by Division 1. Apart from basic research, testing within the scope of legal metrology is a main task.

Tasks

The Division carries out basic research in the field of mechanical and acoustical measurands. On the basis of the Units and Time Act, standards and standard measuring devices are developed with the aid of which the measurement scales for all relevant mechanical and acoustical measurands such as mass, force, torque, acceleration, flowrate of gases and liquids, sound and ultrasound pressure can be realized with maximum accuracy and disseminated, predominantly to DAkkS laboratories. The tasks of the Division also comprise type examinations and certifications of measuring instruments on the basis of national regulations - such as the Verification Act and the Verification Ordinance - of European Measuring Instruments Directives as well as international recommendations of the OIML. In addition, employees of the Division provide advice in all matters of relevant metrology, assess DAkkS and other calibration and test laboratories and cooperate in the respective national and international committees.

1 Abteilungsbericht aus dem Jahresbericht 2019

Bestimmung kleinster Dichteunterschiede von 28Si-Kugeln nach der Methode der Druckflotation.

Der Initiates file downloadAbteilungsbericht gibt einen Überblick über die wichtigsten Nachrichten und Ereignisse der Abteilung „Mechanik und Akustik“ des letzten Jahres und ergänzt somit den Opens internal link in current windowJahresbericht-2019 der PTB.

 

 

News

Due to the redefinition of the kilogram and due to the new possibilities this offers to disseminate the unit kilogram for a practice-oriented and stable traceability chain, the demand of national metrological institutes, calibration laboratories and balance manufacturers for silicon spheres is very high. In this context, the "Si-kg" transfer project, together with the participating companies, has...

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When carrying out fatigue tests, the connected signal conditioning electronics must also be calibrated. One way of doing such a calibration is described in the international standard ISO 4965-2. The first part of the standard deals with the associated test systems. At PTB, a calibration of such a measuring amplifier has now been performed for the first time for a customer. The calibration...

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The sound emission of technical devices, machinery and equipment has to be declared for purposes of environmental protection, occupational health and consumer information. An upper limit for the sound emission is legally binding for some machines used outdoors. The descriptor for sound emission is the sound power level, which is measured by internationally harmonised methods. A disadvantage of...

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