Sensors & Transducers Journal
(ISSN 1726- 5479)
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205.767 |
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(ISSN 1726- 5479) |
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Vol. 139, No. 4, April 2012, pp. 87-94
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Study of Creep Recovery for Force Transducers Compared with Creep Behavior
1 Ebtisam H. Hasan, 2 Rolf Kumme and 2 Günther Haucke 1 National Institute for Standards (NIS), Giza, Egypt 2 Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany E-mail: ebtisam_59@yahoo.com, rolf.kumme@ptb.de, guenther.haucke@ptb.de
Received: 6 February 2012 /Accepted: 23 April 2012 /Published: 30 April 2012
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Abstract: As the creep and creep recovery are important characteristics for the selection of the force transducer, standard and supplementary calibration methods are focused on them. For both creep and creep recovery, the results will depend on how long the force applied has been at zero or at the rated value, respectively, before the change of force is made. According to the new ISO 376-2011, creep/creep recovery values are measured at reached loads after time intervals from 30 to 300 seconds. In this study, creep and creep recovery values are measured in the same calibration condition through the use of ISO 376 by waiting a time for creep/creep recovery measurements at each calibration step. The results reveal that for the transducers that have little creep value, there is no tangible difference between creep and creep recovery.
Keywords: Force transducer, Creep recovery, Creep, ISO 376
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