PROGRESS OF THE TU ILMENAU DUAL AXIS TILTMETER WITH NANORAD RESOLUTION

• 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 d^-1).
  Prospectively it will be applied to measure and control tilting of measurement basements and tables.
• Keywords:

  tiltmeter, inclinometer, electromagnetic force compensation, nanorad
• Download:

  IMEKO-WC-2015-TC3-056.pdf
• DOI:

  _unreg_wc-2015.056

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