Patent ID: 8347687

Claim:
An apparatus for performing dissolved gas analysis, the apparatus being connectable to a first oil source and a second oil source, the apparatus comprising a respective sample cell for each source; an analysis cell; an analyser for performing gas analysis on a quantity of gas contained, in use, in said analysis cell; at least one fluid conduit configured to provide for each sample cell a respective fluid flow path from the respective sample cell to said analysis cell and a respective fluid return path, separate from the respective fluid flow path, from the analysis cell to the respective sample cell; and at least one valve configurable to selectably connect each sample cell to said analysis cell to allow fluid communication therebetween by the respective fluid flow path and the respective fluid return path; and a controller operable to control said at least one valve to cause gas to be circulated between a selected one of said sample cells and said analysis cell by the respective fluid flow path and the respective fluid return path, while isolating the, or each, other of said sample cells from said analysis cell.