Setup for the dynamic calibration of bridge amplifiers from DC up to 10 kHz

Authors

  • Leonard Klaus Physikalisch-Technische Bundesanstalt (PTB) http://orcid.org/0000-0001-5436-3841
  • M. Florian Beug Physikalisch-Technische Bundesanstalt (PTB)
  • Thomas Bruns Physikalisch-Technische Bundesanstalt (PTB)

DOI:

https://doi.org/10.21014/acta_imeko.v8i1.657

Abstract

Measurements of mechanical quantities are often carried out with transducers with a bridge output. The output signals are conditioned using bridge amplifiers. If dynamically changing quantities are going to be measured traceably, the bridge amplifier must be calibrated dynamically.

This paper describes a dynamic bridge amplifier calibration setup based on the new PTB dynamic bridge standard. The calibration is carried out by the synchronous sampling of the bridge amplifier output voltage and a reference signal provided by the calibrated dynamic bridge standard. The dynamic bridge standard enables calibrations in a frequency range from DC (static calibration) up to 10 kHz. An overview of the different measurement uncertainty contributions is given, and the first measurement results show good agreement with a previously established measurement setup.

Author Biography

Leonard Klaus, Physikalisch-Technische Bundesanstalt (PTB)

Head of Working Group 1.73 - Impact Dynamics

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Published

2019-03-31

Issue

Vol. 8 No. 1 (2019)

Section

Research Papers

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