公开(公告)号：US4909083A

公开(公告)日：1990-03-20

申请号：US371346

申请日：1989-06-26

申请人： Abdolmajid Fazeli ,  Joseph J. Ponzi ,  Ernst R. Ginkel

发明人： Abdolmajid Fazeli ,  Joseph J. Ponzi ,  Ernst R. Ginkel

IPC分类号： G01L13/06 ,  G01L9/00 ,  G01L13/02 ,  G01L19/00

CPC分类号： G01L13/025 ,  G01L15/00 ,  G01L19/0046 ,  G01L9/0054

摘要： A pressure/differential pressure measuring device having a range plate with static and differential pressure sensors mounted therein. A high pressure isolation plate is mounted on one side of the range plate with a high pressure diaphragm mounted on the side of the high pressure isolation plate away from the range plate and sealed thereto forming a first fluid chamber between the inside of the high pressure diaphragm and the high pressure isolation plate side of the sensor assemblies. A low pressure isolation plate is mounted on the other side of the range plate with a low pressure diaphragm mounted on the side of the low pressure isolation plate away from the range plate and sealed thereto forming a second fluid chamber between the inside of said low pressure diaphragm and the low pressure isolation plate side of the sensor assemblies. A conduit between the first and second fluid chambers has a range diaphragm mounted to isolate the first and second chambers and means are provided to apply the high and low pressure to the outside of the high and low pressure diaphragms respectively.