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Vol. 124, Issue 1, January 2011, pp.30-36



Study on the Relative Difference of the Force Transducer Constants in Tensile and Compressive Modes Calibration Equations


Ebtisam H. Hasan and Seif. M. Osman

Force and Materials Metrology Division

National Institute for Standards (NIS), Tersa Street Giza, Egypt

E-mail: Ebtisam_59@yahoo.com, SeifElnasr@nis.sci.eg



Received: 18 September 2010   /Accepted: 24 January 2011   /Published: 28 January 2011


Abstract: Force transducers when calibrated in tension and compression modes an equation is derived to enable the users to interpolate results throughout the entire range. The equation constants derived governs the adequacy of the output of the transducer in relation to the applied load. If users face difficulties in calibrating the transducers in the tension mode they may resort to the use of the calibration equation of the compression mode when they use the transducer in tension measurements. The adverse effect of such act may influence the judgment on the adequacy of the applied force measurements. It is this concept that this paper aims at throwing light on. The study reveals that different types of transducer to be calibrated in accordance with certain standard specification have little effect on the transducer output in the two modes of calibration. However, such an effect must be taken into consideration in accurate measurements like in the case of inter-comparisons or research work.


Keywords: Force transducer, Tensile mode, Compressive mode, Performance.


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