Title:
【発明の名称】圧力または差圧力測定装置
Document Type and Number:
Japanese Patent JP2799761
Kind Code:
B2
Abstract:
A pressure/differential pressure measuring device having a range plate (14) with static and differential pressure sensors mounted therein. A high pressure isolation plate (12) is mounted on one side of the range plate (14) with a high pressure diaphragm (16) mounted on the side of the high pressure isolation plate (12) away from the range plate and sealed thereto forming a first fluid chamber (24) between the inside of the high pressure diaphragm (16) and the high pressure isolation plate (12) side of the sensor assemblies. A low pressure isolation plate (10) is mounted on the other side of the range plate (14) with a low pressure diaphragm (26) mounted on the side of the low pressure isolation plate (10) away from the range plate and sealed thereto forming a second fluid chamber (28) between the inside of said low pressure diaphragm (26) and the low pressure isolation plate (10) side of the sensor assemblies. A conduit (30) between the first and second fluid chambers (24,28) 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. In a second configuration, the range diaphragm (18) is mounted on one side of the range plate (14) and a fourth diaphragm is provided mounted on the range plate and having a conduit running from the first fluid chamber to its high pressure side. The fourth diaphragm is normally seated and not movable as long as the pressure on the high pressure side remains higher than the pressure on the low pressure side but is capable of movement if the pressure on the low pressure side should exceed that on the high pressure side until such time as the low pressure diaphragm is seated.
Inventors:
Abdul Majid Fazeri
Joseph The James Ponzi
Ernest Richard Ginkel
Joseph The James Ponzi
Ernest Richard Ginkel
Application Number:
JP16582690A
Publication Date:
September 21, 1998
Filing Date:
June 26, 1990
Export Citation:
Assignee:
International Standard Electric Corporation
International Classes:
G01L13/06; G01L9/00; G01L13/02; G01L19/00; (IPC1-7): G01L13/06
Domestic Patent References:
| JP6461641A |
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)