PROGRESS OF THE TU ILMENAU DUAL AXIS TILTMETER WITH NANORAD RESOLUTION

M. Kühnel, C. Diethold, T. Fröhlich

Abstract

The progress of our tiltmeter, which bases on force compensating weigh cells (EMFC) is discussed in this paper. Currently a resolution of ~ 1 nrad at a range of ± 9 mrad, a linearity of < 0.25 · 10^-3 and a cross error of the axes of < ± 22 ppm is achieved. Long term measurements of earth tide related tilts demonstrate the ability to resolve tilts with very small frequencies (1 – 2 <i>d</i>^-1).<BR />Prospectively it will be applied to measure and control tilting of measurement basements and tables.

Keywords

tiltmeter, inclinometer, electromagnetic force compensation, nanorad

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IMEKO-WC-2015-TC3-056.pdf

DOI

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IMEKO TC

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

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