Patent ID: 9709081
Date: 2017-07-18
CPC Classifications: F15B,G01N

Claim:
1. A method of testing a pressurized fluid for dissolved and entrained gasses with a fluid testing device including a first tank having a first volume, and a second tank in fluid communication with the first tank and having a second volume that is larger than the first volume of the first tank, the method comprising: connecting an evacuation and fluid filling system to the first tank; evacuating both the first tank and the second tank with the evacuation and fluid filling system to form a vacuum in both the first tank and the second tank; blocking fluid communication between the first tank and the second tank; introducing a test volume of a pressurized fluid into the first tank with the evacuation and fluid filling system; preventing fluid communication between the first tank and the evacuation and fluid filling system; sensing an initial absolute pressure in the second tank with an absolute pressure sensor; opening fluid communication between the first tank and the second tank to allow the test volume of the pressurized fluid to flow from the first tank into the second tank, thereby de-pressurizing the test volume of the fluid; maintaining the test volume of the de-pressurized fluid in the second tank for a pre-defined out-gassing period to allow any dissolved or entrained gasses in the test volume of the de-pressurized fluid to separate from the de-pressurized fluid; sensing a final absolute pressure in the second tank with the absolute pressure sensor, after the test volume of the de-pressurized fluid has been maintained in the second tank for the pre-defined out-gassing period; and correlating a difference between the final absolute pressure and the initial absolute pressure to a volume of gasses released from the test volume of the de-pressurized fluid.