TEMPERATURE TRANSMITTER WITH ON-LINE CALIBRATION USING JOHNSON NOISE
    61.
    发明申请
    TEMPERATURE TRANSMITTER WITH ON-LINE CALIBRATION USING JOHNSON NOISE 审中-公开
    使用约翰逊噪声进行在线校准的温度变送器

    公开(公告)号:WO1997025602A1

    公开(公告)日:1997-07-17

    申请号:PCT/US1996020681

    申请日:1996-12-19

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01K15/00 G01K7/30

    Abstract: A temperature transmitter (10) and a process control system includes a sensor input (1, 2, 3, 4) for coupling to a temperature sensor (16) having a temperature dependent resistance. Resistance measuring circuitry (20, 26, 50) couples to the sensor input (1, 2, 3, 4) and provides a resistance output related to resistance of the temperature dependent resistance. Analog to digital conversion circuitry (78, 88) couples to the sensor input (1, 2, 3, 4) and provides a digital output related to AC signals across the sensor input. Digital signal processing circuitry (64) isolates a Johnson noise component of the AC signals and provides a digitized Johnson output. Temperature measurement circuitry provides a calibrated temperature output based upon the resistance output and the digitized Johnson noise output. Output circuitry (24) transmits the calibrated temperature output over the process control loop (11).

    Abstract translation: 温度变送器(10)和过程控制系统包括用于耦合到具有温度依赖性电阻的温度传感器(16)的传感器输入(1,2,3,4)。 电阻测量电路(20,26,50)耦合到传感器输入(1,2,3,4),并提供与温度依赖电阻的电阻相关的电阻输出。 模数转换电路(78,88)耦合到传感器输入端(1,2,3,4),并提供与传感器输入端的AC信号相关的数字输出。 数字信号处理电路(64)隔离交流信号的约翰逊噪声分量,并提供数字化的约翰逊输出。 温度测量电路提供基于电阻输出和数字化约翰逊噪声输出的校准温度输出。 输出电路(24)通过过程控制回路(11)传送经校准的温度输出。

    OPTICAL INTERFACE WITH SAFETY SHUTDOWN
    62.
    发明申请
    OPTICAL INTERFACE WITH SAFETY SHUTDOWN 审中-公开
    光学接口与安全关闭

    公开(公告)号:WO1997012454A1

    公开(公告)日:1997-04-03

    申请号:PCT/US1996015252

    申请日:1996-09-24

    Applicant: ROSEMOUNT INC.

    CPC classification number: H04B10/077 H04B10/07955 H04B10/807

    Abstract: A system for transmitting optical power from a first location to a second location. The system includes a first light source (108) at the first location which generates a first light beam. A power converter (200) detects the first light beam at the second location. A first control circuit (20) coupled to the power converter operates a second light source (200) at the second location to generate a return safety light beam after detection of the first light beam. A photodetector (116) detects the return safety light beam at the first location. A second control circuit is coupled between the photodetector (116) and the first light source (108). The second control circuit detects the presence of the return safety light beam and operates the first light source (108) to generate the first light beam at a first power level prior to detecting the return safety light beam and at a second power level, higher than the first power level, after detecting the return safety light beam.

    Abstract translation: 一种用于将光功率从第一位置传输到第二位置的系统。 该系统包括在第一位置处产生第一光束的第一光源(108)。 功率转换器(200)在第二位置检测第一光束。 耦合到功率转换器的第一控制电路(20)在第二位置操作第二光源(200),以在检测到第一光束之后产生返回安全光束。 光电检测器(116)检测第一位置处的返回安全光束。 第二控制电路耦合在光电检测器(116)和第一光源(108)之间。 第二控制电路检测返回安全光束的存在并操作第一光源(108)以在检测到返回安全光束之前以第一功率电平产生第一光束,并且在第二功率电平高于 第一功率水平,检测到返回安全光束后。

    ADAPTIVE BIAS CONTROLLER
    63.
    发明申请
    ADAPTIVE BIAS CONTROLLER 审中-公开
    自适应偏置控制器

    公开(公告)号:WO1997011414A1

    公开(公告)日:1997-03-27

    申请号:PCT/US1996014509

    申请日:1996-09-10

    Applicant: ROSEMOUNT INC.

    CPC classification number: G05B13/042 G05B13/021 Y10S388/907

    Abstract: A process controller (100) controls an integrating-type process (112) based on a measured process variable (y(t)) and a set point (Y>SET SET SET

    Abstract translation: 过程控制器(100)基于测量的过程变量(y(t))和设定点(Y> SET <)来控制积分型过程(112)。 过程控制器(100)包括误差产生电路(102),非积分控制电路(104)和自适应偏置电路(108)。 误差产生电路(102)基于设定点(Y> SET <)和测量过程变量(y(t))之间的差异产生误差信号(e(t))。 控制电路(104)产生作为误差信号(e(t))的函数的控制信号(u(t))。 自适应偏置电路(108)向控制信号(u(t)),测量过程变量(y(t))或设定点(Y> SET <)添加偏置值。 作为误差信号(e(t))的函数选择性地更新偏置值,以迫使误差信号(e(t))朝向零。

    TWO-WIRE LEVEL TRANSMITTER
    64.
    发明申请
    TWO-WIRE LEVEL TRANSMITTER 审中-公开
    双线电平变送器

    公开(公告)号:WO1996041135A1

    公开(公告)日:1996-12-19

    申请号:PCT/US1996008135

    申请日:1996-05-31

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01F23/284

    Abstract: A level transmitter (10) for use in a process application measures height of a product (14) in a tank (12). The level transmitter (10) includes a microwave antenna (18) directed into the tank (10). A low power microwave source (70) sends a microwave signal through the microwave antenna (18). A low power microwave receiver (70) receives a reflected microwave signal. Measurement circuitry (42) coupled to the source and receiver initiates transmitting of the microwave signal and determines product height based upon the received, reflected signal. Output circuitry (48, 56) coupled to a two-wire process control loop (20) transmits information related to product height over the loop (20). Power supply circuitry (40) in the level transmitter (10) coupled to the two-wire process control loop (20) receives power from the loop (20) which powers the level transmitter (10) including the microwave source and the microwave receiver (70).

    Abstract translation: 用于过程应用的液位变送器(10)测量罐(12)中的产品(14)的高度。 电平变送器(10)包括引导到储罐(10)中的微波天线(18)。 低功率微波源(70)通过微波天线(18)发送微波信号。 低功率微波接收器(70)接收反射的微波信号。 耦合到源和接收器的测量电路(42)启动微波信号的发射并基于所接收的反射信号确定产品高度。 耦合到二线过程控制回路(20)的输出电路(48,56)在循环(20)上传送与产品高度相关的信息。 耦合到二线过程控制回路(20)的电平变送器(10)中的电源电路(40)从环路(20)接收功率,该环路(20)为包括微波源和微波接收器 70)。

    MOUNTING ASSEMBLY FOR A PRESSURE TRANSMITTER
    65.
    发明申请
    MOUNTING ASSEMBLY FOR A PRESSURE TRANSMITTER 审中-公开
    压力变送器安装组件

    公开(公告)号:WO1996034265A1

    公开(公告)日:1996-10-31

    申请号:PCT/US1996005737

    申请日:1996-04-24

    Applicant: ROSEMOUNT INC.

    Abstract: The present invention relates to a mounting assembly (21) for a pressure sensor (30) in a pressure transmitter (10). The mounting assembly (21) includes a header (58) having a cavity (32) opening to a first surface (103). The cavity (32) is defined by an inner endwall (164) and an inner sidewall (130). A support (120) is joined to the inner endwall (164) within the cavity on a first support end (150). A pedestal (102) has a first pedestal end (102A) supporting the pressure sensor (30) and a second pedestal end (102B) joined to a second support end (136). Aligning means (132) align the second pedestal end (102B) to the second support end (136) in order that a volume of the mounting assembly (21) is increased to thereby reduce a quantity of fill fluid needed in the sensor cavity (32).

    Abstract translation: 本发明涉及一种用于压力传感器(10)中的压力传感器(30)的安装组件(21)。 安装组件(21)包括具有通向第一表面(103)的空腔(32)的集管(58)。 空腔(32)由内端壁(164)和内侧壁(130)限定。 支撑件(120)在第一支撑端(150)上的空腔内连接到内端壁(164)。 基座(102)具有支撑压力传感器(30)的第一基座端(102A)和与第二支撑端(136)接合的第二基座端(102B)。 对准装置(132)将第二基座端部(102B)对准第二支撑端(136),以使得安装组件(21)的体积增加,从而减少传感器空腔(32)中所需的填充液体的量 )。

    PRESSURE TRANSMITTER WITH REMOTE SEAL DIAPHRAGM AND CORRECTION CIRCUIT THEREFOR
    66.
    发明申请
    PRESSURE TRANSMITTER WITH REMOTE SEAL DIAPHRAGM AND CORRECTION CIRCUIT THEREFOR 审中-公开
    带远程密封膜片的压力变送器及其校正电路

    公开(公告)号:WO1996027124A1

    公开(公告)日:1996-09-06

    申请号:PCT/US1995002037

    申请日:1995-02-28

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01L27/005 G01L9/125 G01L19/0007

    Abstract: A pressure or flow transmitter (11) having a pressure sensor (27) disposed in a transmitter housing (14). The pressure transmitter (11) includes a diaphragm (18) remote from the pressure sensor (27). The diaphragm (18) is connected to the pressure sensor (27) with capillary tubing (22) containing a fluid. The diaphragm (18) is disposed at a relative vertical position (H) from the transmitter housing (14). The transmitter (11) contains circuitry (58, 60, 62, 64) which provides a transmitter output as a function of the pressure output, the circuitry (58, 60, 62, 64) adjusts the transmitter output as a function of the relative vertical position (H) of the diaphragm (18).

    Abstract translation: 具有设置在变送器外壳(14)中的压力传感器(27)的压力或流量变送器(11)。 压力变送器(11)包括远离压力传感器(27)的隔膜(18)。 隔膜(18)通过含有流体的毛细管(22)连接到压力传感器(27)。 隔膜(18)设置在距变送器壳体(14)的相对垂直位置(H)处。 发射器(11)包含提供作为压力输出的函数的发射器输出的电路(58,60,62,64),所述电路(58,60,62,64)根据相对值调节发射器输出 隔膜(18)的垂直位置(H)。

    PRESSURE SENSORS AND PRESSURE TRANSMITTERS
    67.
    发明申请
    PRESSURE SENSORS AND PRESSURE TRANSMITTERS 审中-公开
    压力传感器和压力变送器

    公开(公告)号:WO1996027123A1

    公开(公告)日:1996-09-06

    申请号:PCT/US1996002522

    申请日:1996-02-22

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01L9/0075 G01L9/125 Y10T29/49142

    Abstract: First capacitance pressure sensor (70A, B) has a fusion bonded single crystal structure (sapphire with cavity). Second one (70A, B) has an elongated and thick single crystal structure. Third one (70A, B) uses the electric field emanating from the back sides of the capacitor plates. First differential pressure transmitter uses a process barrier (71) and an elongated member as a sensor (70A, B). Second differential pressure transmitter uses single crystal structures with stress isolation members as sensors (70A, B). Basically thick slab cavity capacitance sapphire sensors are directly exposed to a process fluid. Slab: 15x3x2 cubic mm, cavity cross section: 1mm x 0.5 micro m, capacitance: 42 pF.

    Abstract translation: 第一电容式压力传感器(70A,B)具有融合单晶结构(具有空腔的蓝宝石)。 第二个(70A,B)具有细长且厚的单晶结构。 第三个(70A,B)使用从电容器板背面发出的电场。 第一压差变送器使用过程屏障(71)和细长构件作为传感器(70A,B)。 第二差压变送器采用具有应力隔离构件的单晶结构作为传感器(70A,B)。 基本上厚的平板空腔电容蓝宝石传感器直接暴露于工艺流体。 板:15×3×2立方毫米,空腔截面:1mm×0.5微米,电容:42pF。

    ANALOG WEIGHTED BINARY ABSOLUTE POSITION ENCODER
    68.
    发明申请
    ANALOG WEIGHTED BINARY ABSOLUTE POSITION ENCODER 审中-公开
    模拟加权二进制绝对位置编码器

    公开(公告)号:WO1995030128A1

    公开(公告)日:1995-11-09

    申请号:PCT/US1995005239

    申请日:1995-04-27

    Applicant: ROSEMOUNT INC.

    Abstract: A magnet (16) mounted on a moving stem (12) or rotary member of a valve generates magnetic flux over part of a stationary member (14) of the valve which has a uniquely patterned set of magnetoresistive sense resistors (RSIG0-RSIG4) and three reference resistors (130, 134, 148) disposed thereon. The distance between two adjacent patterns can be equally spaced, or can be compressed for valves with non-linear characteristics in order to achieve increased resolution over a specific portion of the valve travel. Other embodiments can use a light source, beta radiation or neutron radiation as the source of flux, the pattern for each embodiment's sensor having some material responsive and some unresponsive to the flux. The sensor (18) can provide feedback representative of position in a valve positioner, or functions as the position sensor in a position transmitter.

    Abstract translation: 安装在活动杆(12)或阀的旋转构件上的磁体(16)在阀的固定构件(14)的一部分上产生磁通,其具有唯一的图案化的一组磁阻检测电阻器(RSIG0-RSIG4)和 设置在其上的三个参考电阻器(130,134,148)。 两个相邻图案之间的距离可以等间隔,或者可以压缩具有非线性特性的阀,以便在阀行程的特定部分上实现增加的分辨率。 其他实施例可以使用光源,β辐射或中子辐射作为通量源,每个实施例的传感器的图案具有一些响应性并且对通量不响应的材料。 传感器(18)可以提供代表阀定位器中的位置的反馈,或者用作位置传感器中的位置传感器。

    TRANSMITTER WITH IMPROVED COMPENSATION
    69.
    发明申请
    TRANSMITTER WITH IMPROVED COMPENSATION 审中-公开
    具有改进补偿的变送器

    公开(公告)号:WO1995020141A1

    公开(公告)日:1995-07-27

    申请号:PCT/US1995000835

    申请日:1995-01-17

    Applicant: ROSEMOUNT INC.

    Abstract: A circuit (58) for compensating variables in a measurement transmitter (2). Within the transmitter, a sensor (54) senses a primary process variable such as differential pressure and a converter (56) digitizes the sensed process variable. The sensor (54) senses pressures within a span of pressures values. A memory (68) inside the transmitter stores at least two membership functions. The memory (68) also stores a set of compensation formulas, each formula corresponding to a membership function. A selection circuit (64) in the transmitter (2) selects those membership functions which have a non-zero value at the digitized PV, and a correction circuit (66) provides at least one correction value calculated from a compensation formula corresponding to a selected membership function. A weighting circuit (70) multiplies each correction value by its corresponding selected membership function, and combines the multiplicands to provide a compensated PV. The compensated PV is coupled to a control circuit (6) connecting the transmitter (2) to a control system (4).

    Abstract translation: 一种用于补偿测量发射器(2)中的变量的电路(58)。 在发射器内,传感器(54)感测主要过程变量(例如差压)和转换器(56)数字化感测到的过程变量。 传感器(54)感测压力范围内的压力值。 发射机内的存储器(68)存储至少两个隶属函数。 存储器(68)还存储一组补偿公式,每个公式对应于隶属函数。 发射机(2)中的选择电路(64)选择在数字化的PV处具有非零值的那些隶属函数,并且校正电路(66)提供从与所选择的对应的补偿公式计算的至少一个校正值 隶属函数。 加权电路(70)将每个校正值乘以其对应的选择的隶属函数,并组合被乘数以提供经补偿的PV。 补偿PV耦合到将发射器(2)连接到控制系统(4)的控制电路(6)。

    MULTIVARIABLE TRANSMITTER
    70.
    发明申请
    MULTIVARIABLE TRANSMITTER 审中-公开
    多功能发射机

    公开(公告)号:WO1995007522A1

    公开(公告)日:1995-03-16

    申请号:PCT/US1994009113

    申请日:1994-08-12

    Applicant: ROSEMOUNT INC.

    CPC classification number: G08C19/02

    Abstract: In this invention, a multivariable transmitter (2) providing an output representative of mass flow has a dual microprocessor structure. The first microprocessor (72) compensates digitized process variables and the second microprocessor (80) computes the mass flow as well as arbitrating communications between the transmitter (2) and a master (88).

    Abstract translation: 在本发明中,提供代表质量流量的输出的多变量发射器(2)具有双微处理器结构。 第一微处理器(72)补偿数字化过程变量,第二微处理器(80)计算质量流量以及仲裁发射机(2)和主机(88)之间的通信。

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