发明公开
EP2286197A1 IMPROVED TEMPERATURE COMPENSATION OF A MULTIVARIABLE PRESSURE TRANSMITTER 有权
改进的温度补偿通信设备用压MULTIVARIABLEM

  • 专利标题: IMPROVED TEMPERATURE COMPENSATION OF A MULTIVARIABLE PRESSURE TRANSMITTER
  • 专利标题(中): 改进的温度补偿通信设备用压MULTIVARIABLEM
  • 申请号: EP09755684.9
    申请日: 2009-05-27
  • 公开(公告)号: EP2286197A1
    公开(公告)日: 2011-02-23
  • 发明人: FANDREY, Mark, C.SUNDET, Paul, C.
  • 申请人: Rosemount, Inc.
  • 申请人地址: 12001 Technology Drive Eden Prairie, MN 55344 US
  • 专利权人: Rosemount, Inc.
  • 当前专利权人: Rosemount, Inc.
  • 当前专利权人地址: 12001 Technology Drive Eden Prairie, MN 55344 US
  • 代理机构: Vossius & Partner
  • 优先权: US56082 20080527
  • 国际公布: WO2009146323 20091203
  • 主分类号: G01L19/04
  • IPC分类号: G01L19/04
IMPROVED TEMPERATURE COMPENSATION OF A MULTIVARIABLE PRESSURE TRANSMITTER
摘要:
A multivariable process fluid pressure transmitter (10) includes an electronics module (18) and a sensor module (222). The sensor module (222) is coupled to the electronics module (18). A process fluid temperature sensor is coupled to the process fluid pressure transmitter. A differential pressure sensor (228) is disposed within the sensor module (22) and is operably coupled to a plurality of process fluid pressure inlets. A static pressure sensor (230) is also disposed within the sensor module (222) and is operably coupled to at least one of the process fluid pressure inlets. A first temperature sensor (232) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the differential pressure sensor (228). A second temperature sensor (234) is disposed within the sensor module (222) and is configured to provide an indication of a temperature of the static pressure sensor (230). Measurement circuitry (328) is operably coupled to the differential pressure sensor (228), the static pressure sensor (230), and the first (232) and second (234) temperature sensors. A processor (326) is coupled to the measurement circuitry (328) and is configured to provide a compensated differential pressure output based on a measurement of the differential pressure sensor (238) and the first temperature sensor (232), and to provide a compensated static pressure output based on a measurement of the static pressure sensor (230) and the second temperature sensor (234).
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