Patent attributes
A high pressure transducer has a metal housing with a main inlet high pressure port at one end and a reference pressure port at the other end. The ports communicate with a central hollow of the housing. Positioned in the hollow and communicating with the main inlet port is a first header welded to the housing and containing a first sensor device. Also positioned in the hollow and communicating with the reference pressure port is a second header also welded to the housing and having a second sensor device. There is another high pressure port on the housing and located between the inlet and reference ports to receive a main inlet high pressure as applied to said main inlet port and when a reference pressure is applied to said reference port. The applied pressures cause the first header weld to experience zero stress due to the application of the same main pressure to both the main inlet port and another pressure port. The second header weld experiences a weld pressure equal to the difference between the main high pressure and the reference pressure.
