The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2016
Filed:
Nov. 28, 2011
Neil Alexander Downie, Hampshire, GB;
Marcel Behrens, Vilvoorde, BE;
Lateef Olusegun Adigun Obadun, Berkshire, GB;
Neil Alexander Downie, Hampshire, GB;
Marcel Behrens, Vilvoorde, BE;
Lateef Olusegun Adigun Obadun, Berkshire, GB;
AIR PRODUCTS AND CHEMICALS, INC., Allentown, PA (US);
Abstract
There is provided a method of, and apparatus for, measuring the mass of a gas under pressure using a piezoelectric oscillator. The gas is contained within a pressure vessel () having a fixed internal volume (V) and the piezoelectric oscillator () is immersed in the gas within the pressure vessel (). The method comprises: a) utilizing said piezoelectric oscillator () to measure the density of the gas within the high-pressure vessel (); b) determining, from the density measurement and from the internal volume (V) of said pressure vessel, the mass of the gas within the pressure vessel (). By providing such a method, the true contents (i.e. mass) of fluid in a pressure vessel such as a cylinder can be measured directly without the need to compensate for factors such as temperature or compressibility. This allows a determination of mass through direct derivation from the density of the gas in the cylinder, reducing the need for additional sensors or complex calculations to be performed.