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Method for operating a coriolis mass flowmeter and respective coriolis mass flowmeter

  • US 10,295,388 B2
  • Filed: 07/14/2016
  • Issued: 05/21/2019
  • Est. Priority Date: 07/17/2015
  • Status: Active Grant
First Claim
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1. Method for operating a Coriolis mass flowmeter having at least one measuring tube, an oscillation exciting device for exciting the measuring tube to an oscillation, at least a first oscillation sensor and a second oscillation sensor and at least a first sensor signal path and a second sensor signal path,wherein at least one first test signal is generated having at least one first test signal frequency,wherein the at least first test signal is fed at least into the first sensor signal path and into the second sensor signal path,wherein the at least first test signal is guided by the first sensor signal path over the first oscillation sensor and by the second sensor signal path over the second oscillation sensor,wherein a test signal propagation time difference of at least the first test signal is determined at least between the first sensor signal path and the second sensor signal path,wherein a sensor signal propagation time difference between a first sensor signal and a second sensor signal is compensated with the test signal propagation time difference,wherein at least the first test signal and a second test signal are generated having a frequency spectrum that is free of the frequency of the oscillation andwherein at least the first test signal is generated having a frequency spectrum that is below the frequency of the oscillation and at least the second test signal is generated having a frequency spectrum that is above the frequency of the oscillation.

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