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Inline measuring device with a vibration-type measurement pickup

  • US 7,392,709 B2
  • Filed: 05/16/2006
  • Issued: 07/01/2008
  • Est. Priority Date: 05/16/2005
  • Status: Active Grant
First Claim
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1. An inline measuring device for measuring a medium flowing in a pipeline, said inline measuring device comprising:

  • a vibration-type measurement pickup; and

    measuring device electronics electrically coupled with said vibration-type measurement pickup, wherein;

    said vibration-type measurement pickup includes at least one measuring tube vibrating during operation and communicating with the pipeline, an electromechanical exciter mechanism acting on said at least one measuring tube for producing and maintaining mechanical oscillations of said at least one measuring tube, a sensor arrangement for producing at least one oscillation measurement signal representing oscillations of said at least one measuring tube, and a measurement pickup housing housing said at least one measuring tube together with said exciter mechanism and said sensor arrangement;

    said measuring device electronics monitors a static internal pressure within said measurement pickup housing and/or monitors a hermeticity of said at least one measuring tube,said measuring device electronics repeatedly determines at least one monitoring value on the basis of at least one operational parameter internally determined and/or internally measured during operation, andsaid measuring device electronics generates internally at least one alarm signal by means of said monitoring value, said alarm signal signalling a superelevated static internal pressure within said measurement pickup housing and/or said alarm signal signalling the presence of a leak in said at least one measuring tube.

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