公开(公告)号：US20170089786A1

公开(公告)日：2017-03-30

申请号：US14868901

申请日：2015-09-29

Applicant: Rosemount Inc.

Inventor： Charles Ray Willcox ,  Jennifer Ann Blodgett ,  Mark George Romo

IPC: G01L9/00

CPC classification number: G01L9/0041 ,  G01L9/0042 ,  G01L9/0047 ,  G01L9/0052 ,  G01L9/0072 ,  G01L19/0618

Abstract: A pressure sensor includes a base having a high-pressure contact portion, and a diaphragm positioned over the base and having an external top surface opposite the base. The external top surface is defined within a closed perimeter and external side surfaces extend down from an entirety of the closed perimeter toward the base. A high-pressure contact portion of the diaphragm is aligned with and separated by a gap from the high-pressure contact portion of the base. A sensing element is coupled to the diaphragm and provides an output based on changes to the diaphragm. When a hydrostatic pressure load above a threshold value is applied to the entire external top surface and external side surfaces of the diaphragm, the hydrostatic pressure load causes the high-pressure contact portion of the diaphragm to contact the high-pressure contact portion of the base.

公开(公告)号：US09316553B2

公开(公告)日：2016-04-19

申请号：US14225763

申请日：2014-03-26

Applicant: Rosemount Inc.

Inventor： Charles Ray Willcox

IPC: G01L9/12 ,  G01L9/00 ,  G01L19/02

CPC classification number: G01L9/0072 ,  G01L9/0041 ,  G01L19/02

Abstract: A differential pressure sensor for sensing a differential pressure of a process fluid, includes a sensor body having a sensor cavity formed therein with a cavity profile. A diaphragm in the sensor cavity deflects in response to an applied differential pressure. The diaphragm has a diaphragm profile. A gap formed between the cavity profile and the diaphragm profile changes as a function of the differential pressure. At least one of the cavity profile and diaphragm profile changes as a function of a line pressure to compensate for changes in the gap due to deformation of the sensor body from the line pressure.

Abstract translation: 用于感测过程流体的压差的差压传感器包括传感器体，其具有在其中形成有空腔轮廓的传感器腔。 传感器腔中的隔膜响应于施加的压差而偏转。 隔膜具有隔膜轮廓。 在空腔轮廓和隔膜轮廓之间形成的间隙作为压差的函数而变化。 腔体轮廓和隔膜轮廓中的至少一个作为管线压力的函数而改变，以补偿由于传感器主体与管路压力的变形导致的间隙变化。

公开(公告)号：US20150378332A1

公开(公告)日：2015-12-31

申请号：US14319063

申请日：2014-06-30

Applicant: Rosemount Inc.

Inventor： Charles Ray Willcox

IPC: G05B17/02

CPC classification number: G05B17/02 ,  G01L9/0072 ,  G01L19/02 ,  G05B19/404 ,  G05B2219/31126

Abstract: A process variable transmitter for sensing a process variable of an industrial process includes a process variable sensor configured to sense a current process variable of the industrial process. Measurement circuitry is configured to compensate the sensed process variable as a function of at least one previously sensed process variable characterized by a Hysteron basis function model. Output circuitry provides a transmitter output related to the compensated sensed process variable.

Abstract translation: 用于感测工业过程的过程变量的过程变量发送器包括被配置为感测工业过程的当前过程变量的过程变量传感器。 测量电路被配置为根据由Hysteron基函数模型表征的至少一个先前感测的过程变量来补偿感测到的过程变量。 输出电路提供与补偿的感测过程变量相关的变送器输出。