Pressure measuring device

• US 9,404,824 B2
• Filed: 02/15/2013
• Issued: 08/02/2016
• Est. Priority Date: 02/16/2012
• Status: Active Grant

• Current Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
• Original Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno
• Inventors: Volker, Arno Willem Frederik
• Primary Examiner(s): Macchiarolo, Peter
• Assistant Examiner(s): Young, Monica S
• Application Number:
  US14/378,827
• Publication Number:
  US 20150027230A1
• Time in Patent Office: 1,264 Days
• Field of Search: 732/90, 702/54
• US Class Current: 1/1
• CPC Class Codes: G01L 11/02 by optical means
• CPC Class Codes: G01L 11/04 by acoustic means
• CPC Class Codes: G01L 9/0008 using vibrations
• CPC Class Codes: G01N 9/002 using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis G01N9/34 takes precedence

Abstract

A pressure measurement device for enabling non-intrusive pressure measurement of a first fluid present in a volume having at least one wall is provided. The device includes an enclosed space filled with a second fluid, a transmitter provided in the enclosed space and adapted to transmit a standing wave in a direction of the wall, means for varying a pressure of the second fluid in the enclosed space, a detector for measuring data related to a resonance of the wall and a processor for determining a characteristic change in the data.

Claims

1. A pressure measurement device for enabling non-intrusive pressure measurement of a first fluid present in a volume having at least one wall, the device comprising:

an enclosed space filled with a second fluid;

a transmitter provided in the enclosed space and adapted to transmit a standing wave in a direction of the said wall;

means for varying a pressure of the second fluid in the enclosed space;

a detector for measuring a data related to a resonance of the wall; and

a processor for determining a characteristic change in said data.

2. The device according to claim 1, wherein the standing wave is a monochromatic plane wave.

3. The device according to claim 1, wherein the wave is electromagnetic or acoustic.

4. The device according to claim 1, being adapted to be attached on the said wall.

5. The device according to claim 4, comprising a clamping unit for enabling said attachment.

6. The device according to claim 1, wherein the volume is confined by a pipe.

7. The device according to claim 1, wherein the first fluid is the same as the second fluid.

8. The device according to claim 1, wherein the pressure of the second fluid is varied between 1-1000 bar, preferably between 1-10 bar.

9. The device according to claim 1, wherein the means for varying the pressure is a pump.

10. The device according to claim 9, wherein the pump is controllable by the processor.