INVESTIGATION OF THE INFLUENCE OF CARRIER FREQUENCY OR DIRECT CURRENT VOLTAGE IN FORCE CALIBRATIONS

Daniel Schwind, Torsten Hahn

Abstract

This paper describes analysis and evaluation of calibration of several force transducer types, each transducer first calibrated by a precision amplifier at 5 V 225 HZ carrier frequency excitation voltage and second by a precision amplifier at 5 V direct current excitation voltage. Some calibrations were made according to ISO 376 in order to determine the uncertainty; much more calibrations were performed in two series with changing amplifier in order to detect the influence of the excitation voltage. There were two goals of the investigation: The first goal was to achieve confidence of the different calibration equipment for carrier frequency and direct current voltage by statistical data, the second goal was to experience the interchangeability of two different amplifier types on different transducer types.

Keywords

carrier frequency (CF), direct current (DC), force transducer

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IMEKO-WC-2009-TC3-388.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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