System and method for monitoring asset health by dissolved gas measurement

A system for analyzing dissolved gas in a fluid. filled asset comprising:

• a fluid extraction unit configured to extract fluid from the fluid filled asset;
• an isolation device coupled to the fluid filled asset and configured to isolate the extracted fluid from the fluid filled asset;
• a fluid pump configured to circulate the fluid though a first fluid loop;
• a gas extraction unit in the first fluid loop configured to extract dissolved gas from the circulating fluid, the gas extraction unit comprising at least one gas permeable membrane;
• a gas pump configured to circulate the extracted gas through a second fluid loop, wherein the first fluid loop and the second fluid loop are separated by the at least one gas permeable membrane;
• a pressure control unit configured to control a differential pressure across the at least one gas permeable membrane to a predetermined pressure differential;
• and
• a gas analysis unit in the second fluid loop, configured to receive the extracted gas, wherein the gas analysis unit is further configured to periodically determine, at specific intervals, the chemical makeup of the extracted gas.

A method for analyzing gas dissolved within a fluid filled asset, the method comprising:

• circulating fluid from the fluid filled asset through an extraction loop;
• circulating a portion of the fluid in the extraction loop through a first fluid loop;
• passing the portion of the fluid in the first fluid loop along a first side of at least one gas permeable membrane, the gas permeable membrane being pressure isolated from the fluid filled asset with one of a valve or a puma during both circulating steps;
• extracting gas from a second side of the at least, one gas permeable membrane;
• circulating the extracted gas through a second fluid mop, wherein the first fluid loop and the second fluid loop are separated by the at least one gas permeable membrane;
• controlling a pressure differential across the at least one gas permeable membrane to a predetermined pressure differential;
• providing the extracted gas to a gas analysis unit disposed within the second fluid loop;
• and
• periodically determining a chemical makeup of the extracted gas using the gas analysis unit.