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The influence of different vibration exciter systems on high frequency primary calibration of single-ended accelerometers: II

2011; IOP Publishing; Volume: 49; Issue: 1 Linguagem: Inglês

10.1088/0026-1394/49/1/005

1681-7575

Th Bruns, Alfred Link, Angelika Täubner,

Sensor Technology and Measurement Systems

During the monitoring of the long term stability of two accelerometers intended for use in the CIPM key comparison CCAUV.V-K2, significant deviations of the magnitude results of the single-ended transducer were discovered. These deviations depend on whether the calibration was performed on an armature made of beryllium or of ceramic. After first investigations which led to an interpretation as a relative motion effect published in Täubner et al (2010 Metrologia 47 58–64), now, more detailed measurements combined with modelling and system identification have led to a better understanding of what is happening. The measurements, model considerations and corresponding results are presented and discussed in order to further the understanding of this important issue of primary accelerometer calibration. This contribution can be considered a sequel to the former publication (Täubner et al 2010 Metrologia 47 58–64) on the topic.