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    • 1. 发明授权
    • Combined flow, pressure and temperature sensor
    • 组合流量,压力和温度传感器
    • US06343514B1
    • 2002-02-05
    • US09117416
    • 1999-04-06
    • Leif Smith
    • Leif Smith
    • G01L902
    • G01L19/0092A61B5/0215A61B5/028A61M2025/0002G01F1/6845G01K1/045G01L19/148
    • The invention relates to a device for measuring pressure, temperature and/or flow velocity. It includes a sensor (6) with a sensor support body (13) provided with a diaphragm (15) covering a cavity (14) formed in the support body (13). A pressure sensitive element (41) is mounted on the diaphragm, for recording pressure. Furthermore, a temperature sensitive resistor (42) is mounted in the vicinity of the pressure sensitive resistor and has a known temperature dependence, for recording temperature. It also includes an electrical circuit (43, 44, 45, 46) selectively outputting signals from either of the pressure sensitive element and the temperature sensitive resistor.
    • 本发明涉及一种用于测量压力,温度和/或流速的装置。 它包括具有传感器支撑体(13)的传感器(6),传感器支撑体(13)设置有覆盖形成在支撑体(13)中的空腔(14)的隔膜(15)。 压力敏感元件(41)安装在隔膜上,用于记录压力。 此外,温度敏感电阻器(42)安装在压敏电阻附近,并具有已知的温度依赖性,用于记录温度。 它还包括选择性地输出来自压敏元件和温度敏感电阻器中的任一个的信号的电路(43,44,45,46)。
    • 4. 发明授权
    • Combined flow, pressure and temperature sensor
    • 组合流量,压力和温度传感器
    • US06615667B2
    • 2003-09-09
    • US10022361
    • 2001-12-20
    • Leif Smith
    • Leif Smith
    • G01L902
    • G01L19/0092A61B5/0215A61B5/028A61M2025/0002G01F1/6845G01K1/045G01L19/148
    • The invention relates to a device for measuring pressure, temperature and flow velocity. It comprises a sensor (6) with a sensor support body (13) provided with a diaphragm (15) covering a cavity (14) formed in the support body (13). A pressure sensitive element (41) is mounted on the diaphragm, for recording pressure. Furthermore, a temperature sensitive resistor (42) mounted in the vicinity of and having known temperature dependences, for recording temperature. It also comprises an electrical circuit (43, 44, 45, 46) selectively outputting signals from either of the pressure sensitive element and the temperature sensitive resistor.
    • 本发明涉及一种用于测量压力,温度和流速的装置。 它包括具有传感器支撑体(13)的传感器(6),传感器支撑体(13)设置有覆盖形成在支撑体(13)中的空腔(14)的隔膜(15)。 压力敏感元件(41)安装在隔膜上,用于记录压力。 此外,安装在温度附近并具有已知温度依赖性的温度敏感电阻器(42)用于记录温度。 它还包括选择性地输出来自压敏元件和温度敏感电阻器中的任一个的信号的电路(43,44,45,46)。
    • 5. 发明授权
    • Process pressure measurement devices with improved error compensation
    • 具有改进误差补偿的过程压力测量装置
    • US06295875B1
    • 2001-10-02
    • US09312411
    • 1999-05-14
    • Roger L. FrickStanley E. Rud Jr.David A. Broden
    • Roger L. FrickStanley E. Rud Jr.David A. Broden
    • G01L902
    • G01L9/0075G01L9/0072G01L9/125G01L13/025
    • A device and method are able to compensate for diaphragm deformation (offset) and varying dielectric constants present in a process field environment. The device can be implemented as a pressure sensor or a transmitter having a pressure sensor. The pressure sensor, filled with a dielectric fill-fluid, includes at least three capacitor plates, disposed about a diaphragm. At least two capacitor plates are placed on one side of a conductive diaphragm, and are arranged in a particular manner with respect to the diaphragm. At least one capacitor plate is placed on the other side of the diaphragm. The method compensates for both diaphragm offset and variances in the dielectric constant of the fill-fluid. An error compensated measurement of differential pressure is a function of the amount of diaphragm deflection detected at the edge region subtracted from the amount of diaphragm deflection.
    • 装置和方法能够补偿过程现场环境中存在的隔膜变形(偏移)和变化的介电常数。 该装置可以被实现为具有压力传感器的压力传感器或变送器。 填充有电介质填充流体的压力传感器包括围绕隔膜设置的至少三个电容器板。 至少两个电容器板放置在导电隔膜的一侧,并且以相对于隔膜的特定方式布置。 至少一个电容器板放置在隔膜的另一侧。 该方法补偿了膜片偏移和填充液介电常数的变化。 差压的误差补偿测量是在从膜片偏转量减去的边缘区域处检测到的膜片偏转量的函数。