CN202994334U - 用于感测工业过程的温度的温度变送器 - Google Patents

用于感测工业过程的温度的温度变送器 Download PDF

Info

Publication number
CN202994334U
CN202994334U CN 201220461788 CN201220461788U CN202994334U CN 202994334 U CN202994334 U CN 202994334U CN 201220461788 CN201220461788 CN 201220461788 CN 201220461788 U CN201220461788 U CN 201220461788U CN 202994334 U CN202994334 U CN 202994334U
Authority
CN
China
Prior art keywords
temperature
sensor
industrial process
transmitter
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220461788
Other languages
English (en)
Inventor
安东尼·迈克尔·艾尔克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rosemount Inc
Original Assignee
Rosemount Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosemount Inc filed Critical Rosemount Inc
Application granted granted Critical
Publication of CN202994334U publication Critical patent/CN202994334U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/022—Means for indicating or recording specially adapted for thermometers for recording
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer

Abstract

一种用于感测工业过程的温度的温度变送器，包括：温度传感器，提供与工业过程的温度有关的传感器输出；测量电路，与所述温度传感器耦合，基于所述传感器输出来测量工业过程的温度；输出电路，提供与所测量的温度有关的输出；存储器，存储与温度传感器经历的过度温度事件有关的温度信息；以及诊断电路，基于所存储的过度温度信息对所述温度传感器的条件进行诊断。

Description

用于感测工业过程的温度的温度变送器
技术领域
本实用新型涉及用于控制或者监测工业过程的工业过程控制或监测系统。更具体地，本实用新型涉及一种用于感测工业过程的温度的温度变送器。 
背景技术
过程变量变送器用于测量过程控制或监测系统中的过程参数。温度变送器典型地包括：传感器；模数转换器，用于将来自传感器的输出转换为数字形式；微处理器，用于补偿数字化的输出；以及输出电路，用于发送补偿的输出。典型地，通过过程控制回路执行发送，例如4-20mA的电流回路。一个示例参数是可以通过测量RTD(电阻温度器件)的电阻来感测的温度，或者热电耦传感器的电压输出，RTD也称作PRT(铂电阻温度计)传感器。 
随着过程变量变送器中的温度传感器的老化，其精度可能趋向于退化，尤其是如果所述传感器经历了高于或低于传感器标准温度范围的过度温度。这种退化可能导致完全失效，其中需要替换传感器或者变送器本身。另外，所述退化也可能导致温度读取时的错误。这可能是不引人注意的，并且导致在工业过程的监测或控制时的误差。 
实用新型内容
本实用新型提供了一种用于感测工业过程的温度的温度变送器，包括：温度传感器，提供与工业过程的温度有关的传感器输出；测量电路，与所述温度传感器耦合，基于所述传感器输出来测量工业过程的温度；输出电路，提供与所测量的温度有关的输出；存储器，存储与温度传感器经历的过度温度事件有关的温度信息；以及诊断电路，基于所存储的过度温度信息对所述温度传感器的条件进行诊断。 
附图说明
图1示出了包括配置用于感测过程流体温度的温度传感器在内的工业过程控制系统的简化图。 
图2A是连接用于利用RTD传感器测量温度的温度变送器的框图。 
图2B是连接用于利用热电耦传感器测量温度的温度变送器的框图。 
图3是根据本实用新型的步骤的简化框图。 
具体实施方式
如在背景技术中所讨论的，温度变送器的温度传感器随着时间老化并且退化。这可以导致温度测量时的误差以及传感器的最终失效。已经发现这种退化的一个来源是由于将温度传感器暴露到过度的温度，引起对于传感器的损坏。例如，可能将传感器暴露到超过用于构成所述传感器材料的限制的温度。过度的温度可以是过高的温度或过低的温度。 
本实用新型监测过程变量变送器中的温度传感器经历的过度温度事件的次数。基于这种信息，可以执行诊断并进行与传感器退化概率有关的判定。过度温度的监测可以是传感器已经经历的过度温度事件的次数、过度温度事件的持续时间和/或过度温度事件期间的温度。可以将这种信息存储在过程变量变送器的存储器中，或者存储在与温度传感器本身相关联的存储器中。 
图1是工业过程控制系统5的简化图。在图1中，过程管道7承载过程流体。过程变量变送器10配置用于与过程管道7耦合。变送器10包括温度传感器18，例如，所述温度传感器18可以包括热电耦或RTD传感器。变送器10配置用于向例如过程控制室6的另一个位置发送信息。所述发送可以是通过过程控制回路，例如双线过程控制回路11。所述过程控制回路可以是根据任意所需形式，例如包括4-20mA过程控制回路、承载数字通信的过程控制回路、无线过程控制回路等等。在图1所示的示例中，所述过程变量由控制室6处的电源6A供电。通过过程控制回路11接收供电。感测电阻器6B可以用于感测流过回路11的电流，从而监测由变送器10发送的温度相关信息。应该理解的是可以使用向传感器供电并且对所述传感器 信息进行传送的其他方法。 
图2A是连接用于利用RTD传感器18测量温度的温度变送器10的框图。变送器10与过程控制回路11相连，所述过程控制回路向变送器10供电，并且在所述过程控制回路上发送和接收信息。变送器10包括具有端子1至4的端子模块14，用于与传感器耦合，所述传感器例如是RTD温度传感器(如图2A所示)或者热电耦温度传感器(如图2B所示)。传感器18可以在变送器10内部或外部。变送器10包括微处理器22，所述微处理器通过输入/输出(I/O)电路24与控制回路11相连。电路24也利用来自回路11的功率向变送器10供电。电流源50向传感器18施加电流IS。差分放大器26的正输入和负输入与传感器18相连，并且向高精度A/D转换器28提供输出。存储器30存储用于微处理器22的指令和信息，所述微处理器按照由时钟32确定的速度操作。 
在操作时，变送器10测量传感器18的温度，并且通过控制回路11发送温度的表示。变送器10采用以下等式来计算传感器18的温度的电阻值： 
R INPUT = V RINPUT Is 等式1 
其中： 
电流源50经由端子1和4提供通过传感器18的电流IS。微处理器22测量端子2和3之间的RTD18两端的电压降(VRINPUT)。在例如这里的四线电阻测量中，很大程度上消除了与端子2和3的连接上的电压降，因为实质上所有电流都在端子1和4之间流过，并且对于测量精度几乎没有影响。利用在存储器30中存储的查找表或者合适的等式将RINPUT转换为温度单位。 
图2B示出了连接用于利用传感器18的热电耦测量温度的变送器10，其在端子1和2上产生电压VTCINPUT。端子1和2与差分放大器26的输入耦合。变送器10通过确定热电耦电压VTCINPUT来测量热电耦传感器18的温度。将这种电压适当地补偿，并且基于例如在存储器30中存储的查找表、等式等将电压转换为温度表示。然后可以如上所述在控制回路11上发送温度信息。 
除了图2A和2B所示的存储器30，也示出了可选的传感器存储器40。 可选的传感器存储器40可以与传感器18物理地相关联，并且通过端子模块14中的存储器连接器42与微处理器22相连。在另一个示例实施例中，存储器40包括用于与端子模块14的端子耦合的电路。在任一配置中，可以通过微处理器22读取在存储器40中存储的信息。类似地，微处理器22可以将信息写入到存储器40中。在其中存储器40通过端子模块连接器1-4与微处理器22通信的配置中，例如，存储器40可以包括对于调制到端子模块14的端子上的高频信号或数字信号做出响应的电路。响应于这种信号，存储器40可以存储来自微处理器22的信息，或者向微处理器22发送信息。 
在操作期间，微处理器监测温度传感器18的温度。如果温度传感器18的温度超过阈值，可以将信息存储在存储器30和/或存储器40中。如这里所使用的，“过度温度事件”指的是传感器18经历了超过阈值的温度。这种阈值可以是绝对阈值，或者可以是基于温度和持续时间两者的阈值。例如，如果感测的温度超过阈值，可以将存储器30/40中的计数器递增。这种递增也可以与温度大于阈值的持续时间相关。在另一个示例实施例中，从额定值减去测量温度，并且将结果相对于时间积分。例如，可以向传感器18处于较高温度期间的持续时间赋予比传感器18处于较低温度期间的持续时间更大的权重。作为特定示例，可以温度传感器18发生临时超过500℃赋予比温度传感器18经历200℃温度10小时更大的权重。可以按照需要调节这种加权。例如，一些部件可能在高温下即刻失效，而一些部件当暴露到低于引起即刻失效的温度的升高温度下时可能只是简单地趋向于更加迅速地退化。 
基于与过度温度事件相关联的在存储器30/40中存储的信息，微处理器22可以对传感器18的条件进行诊断。这种诊断可以是以下形式：提供与预期剩余寿命有关的输出、传感器18需要即刻替换的指示，用于对由于过度温度事件导致的在温度测量中引入的误差的补偿。过度温度信息也可以用于预测由于过度温度事件导致的温度测量中的误差。可以通过将经历过度温度事件的温度传感器特征化、并且将这种信息按照补偿信息的形式存储在存储器30或40中来确定这种信息。 
在一些配置中，温度传感器18是可移除的。例如，可选存储器40可以是非易失性存储器，所述非易失性存储器能够在不需要分立电源的情况下保存信息。因为将过度温度事件信息保留在传感器18本身中，这种配置可能是需要的。如果将传感器18去除并且用于不同的变送器18，所述过度温度事件信息将可用于新的变送器。另外，如果传感器因为失效而通过用户返修，所述信息可以用于故障分析。在存储器30或40中存储的信息也可以包含与发生过度温度事件的时间有关的信息，例如时间和日期信息。在另一个示例配置中，也可以在制造或者试行期间或者基于用户输入将具体的阈值信息存储在存储器30或40中。可以通过本地接口或者通过过程控制回路11接收用户输入。存储器30或40也可以包含诸如其他过程变量之类的其他信息，例如传感器18经历的振动。 
根据本实用新型提供了一种用于感测工业过程的温度的温度变送器，包括：温度传感器，提供与工业过程的温度有关的传感器输出；测量电路，与所述温度传感器耦合，基于所述传感器输出来测量工业过程的温度；输出电路，提供与所测量的温度有关的输出；存储器，存储与温度传感器经历的过度温度事件有关的温度信息；以及诊断电路，基于所存储的过度温度信息对所述温度传感器的条件进行诊断。 
图3是示出了根据本实用新型一个实施例的步骤的简化框图60。例如，图3所示的步骤可以使用基于在存储器30中存储的指令而操作的微处理器22来实现。所述程序开始于块62，并且在块64获得温度测量。在块66，判定所述传感器是否经历过度温度事件。这可以通过将温度与阈值相比来进行，并且在过度温度事件时可以考虑时间因素。如果发生或者已经发生这种事件，在块68将过度温度事件信息存储在存储器30或40中。如果不存在过度温度事件，控制转到块70。在块70，从存储器30或40中检索过度温度事件。在块72，基于检索的过度温度事件信息来执行诊断。在其他配置中，在块72可以执行其他类型的步骤，包括基于检索的过度温度事件来补偿测量的温度值。此外，可以将从存储器30或40中检索的过度温度事件信息按照需要通过过程控制回路18发送至另一个位置。 
尽管已经参考优选实施例描述了本实用新型，本领域普通技术人员 应该理解的是在不脱离本实用新型精神和范围的情况下可以进行形式和细节上的修改。温度变送器的各种部件中实现如这里所使用的“测量电路”和“诊断电路”。例如，这两个电路都可以在微处理器22中实现，并且可以包括其他电路。例如，测量电路也可以包括模数转换器、放大器、电流源等。在其他配置中，所述电路可以分散在分立的元件中，或者可以包括共享的元件。 

Claims (11)

1.一种用于感测工业过程的温度的温度变送器，包括： 
温度传感器，提供与工业过程的温度有关的传感器输出； 
测量电路，与所述温度传感器耦合，基于所述传感器输出来测量工业过程的温度； 
输出电路，提供与所测量的温度有关的输出； 
存储器，存储与温度传感器经历的过度温度事件有关的温度信息；以及 
诊断电路，基于所存储的过度温度信息对所述温度传感器的条件进行诊断。 
2.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述存储器位于所述温度变送器中。 
3.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述存储器与所述温度传感器耦合，并且所述温度传感器可从所述变送器移除。 
4.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述过度温度信息包括与温度传感器已经经历的过度温度事件的次数有关的信息。 
5.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述过度温度信息包括与温度传感器经历过度温度的持续时间有关的信息。 
6.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述过度温度信息包括在过度温度事件期间所述温度传感器经历的温度。 
7.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中由所述诊断电路诊断的条件涉及所述温度传感器的剩余寿命。 
8.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所诊断的所述温度传感器的条件涉及测量温度中的预期误差。 
9.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述测量电路基于所诊断的条件来补偿所测量的温度。 
10.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述温度传感器包括电阻温度设备RTD。 
11.根据权利要求1所述的用于感测工业过程的温度的温度变送器，其中所述温度传感器包括热电耦。 
CN 201220461788 2012-06-29 2012-09-11 用于感测工业过程的温度的温度变送器 Expired - Fee Related CN202994334U (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/537,532 2012-06-29
US13/537,532 US9052240B2 (en) 2012-06-29 2012-06-29 Industrial process temperature transmitter with sensor stress diagnostics

Publications (1)

Publication Number Publication Date
CN202994334U true CN202994334U (zh) 2013-06-12

Family

ID=48565506

Family Applications (2)

Application Number Title Priority Date Filing Date
CN 201220461788 Expired - Fee Related CN202994334U (zh) 2012-06-29 2012-09-11 用于感测工业过程的温度的温度变送器
CN201210335726.1A Active CN103512679B (zh) 2012-06-29 2012-09-11 利用传感器应力诊断的工业过程温度变送器

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN201210335726.1A Active CN103512679B (zh) 2012-06-29 2012-09-11 利用传感器应力诊断的工业过程温度变送器

Country Status (8)

Country Link
US (1) US9052240B2 (zh)
EP (1) EP2867634B1 (zh)
JP (1) JP6058134B2 (zh)
CN (2) CN202994334U (zh)
CA (1) CA2877701C (zh)
IN (1) IN2014MN02410A (zh)
RU (1) RU2594623C1 (zh)
WO (1) WO2014003996A2 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103512679A (zh) * 2012-06-29 2014-01-15 罗斯蒙德公司 利用传感器应力诊断的工业过程温度变送器
CN106918408A (zh) * 2017-03-02 2017-07-04 顺丰科技有限公司 一种无源测温装置及其使用方法

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9296543B2 (en) 2012-07-31 2016-03-29 Heb Grocery Company, Lp Vacuum cooler
US9222844B2 (en) * 2013-02-25 2015-12-29 Rosemount Inc. Process temperature transmitter with improved sensor diagnostics
US10638093B2 (en) 2013-09-26 2020-04-28 Rosemount Inc. Wireless industrial process field device with imaging
US11076113B2 (en) 2013-09-26 2021-07-27 Rosemount Inc. Industrial process diagnostics using infrared thermal sensing
US10823592B2 (en) 2013-09-26 2020-11-03 Rosemount Inc. Process device with process variable measurement using image capture device
US9857228B2 (en) 2014-03-25 2018-01-02 Rosemount Inc. Process conduit anomaly detection using thermal imaging
US9488527B2 (en) * 2014-03-25 2016-11-08 Rosemount Inc. Process temperature measurement using infrared detector
US10914635B2 (en) 2014-09-29 2021-02-09 Rosemount Inc. Wireless industrial process monitor
DE102016215827B3 (de) * 2016-08-23 2017-08-03 Ifm Electronic Gmbh Verfahren zur Selbstüberwachung des Messelements eines Temperatursensors für die Prozessmesstechnik
US10380868B2 (en) 2016-08-25 2019-08-13 Infineon Technologies Ag Sensor devices
WO2018215067A1 (de) * 2017-05-24 2018-11-29 Siemens Aktiengesellschaft Erfassen einer temperatur in einer elektrischen maschine oder einem transformator
EP3444691B1 (en) * 2017-06-27 2021-09-15 Schneider Electric Systems USA, Inc. Sensor service prediction
JP2020017133A (ja) * 2018-07-26 2020-01-30 キオクシア株式会社 ストレージ装置及び制御方法
US11490576B2 (en) * 2020-12-22 2022-11-08 Heartland Ag Tech, Inc. Modular kinematic and telemetry system for an irrigation system

Family Cites Families (491)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272090A (zh) 1960-12-02
US3096434A (en) 1961-11-28 1963-07-02 Daniel Orifice Fitting Company Multiple integration flow computer
US3404264A (en) 1965-07-19 1968-10-01 American Meter Co Telemetering system for determining rate of flow
US3468164A (en) 1966-08-26 1969-09-23 Westinghouse Electric Corp Open thermocouple detection apparatus
GB1224904A (en) 1968-08-09 1971-03-10 John Stewart Simpson Stewart Improvements in and relating to electromedical apparatus
US3590370A (en) 1969-04-09 1971-06-29 Leeds & Northrup Co Method and apparatus for detecting the open-circuit condition of a thermocouple by sending a pulse through the thermocouple and a reactive element in series
US3701280A (en) 1970-03-18 1972-10-31 Daniel Ind Inc Method and apparatus for determining the supercompressibility factor of natural gas
US4083031A (en) 1970-07-23 1978-04-04 The United States Of America As Represented By The Secretary Of The Navy Acoustic presence detection method and apparatus
US3691842A (en) 1970-09-08 1972-09-19 Beckman Instruments Inc Differential pressure transducer
US3688190A (en) 1970-09-25 1972-08-29 Beckman Instruments Inc Differential capacitance circuitry for differential pressure measuring instruments
US3849637A (en) 1973-05-22 1974-11-19 Combustion Eng Reactor megawatt demand setter
JPS5631573B2 (zh) 1973-07-13 1981-07-22
US3855858A (en) 1973-08-01 1974-12-24 V Cushing Self synchronous noise rejection circuit for fluid velocity meter
US3924068A (en) 1973-12-27 1975-12-02 Nasa Low distortion receiver for bi-level baseband PCM waveforms
USRE29383E (en) 1974-01-10 1977-09-06 Process Systems, Inc. Digital fluid flow rate measurement or control system
US3948098A (en) 1974-04-24 1976-04-06 The Foxboro Company Vortex flow meter transmitter including piezo-electric sensor
US3952759A (en) 1974-08-14 1976-04-27 M & J Valve Company Liquid line break control system and method
DE2460066C3 (de) 1974-12-19 1981-08-06 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und Vorrichtung zum selbsttätigen Regeln des Brenstoff-Luftverhältnisses einer Verbrennung
US3973184A (en) 1975-01-27 1976-08-03 Leeds & Northrup Company Thermocouple circuit detector for simultaneous analog trend recording and analog to digital conversion
GB1534280A (en) 1975-02-28 1978-11-29 Solartron Electronic Group Method and apparatus for testing thermocouples
ZA761634B (en) 1975-07-17 1977-04-27 Unit Rig & Equip Transverse oscillation for excavating and loading system
US4058975A (en) 1975-12-08 1977-11-22 General Electric Company Gas turbine temperature sensor validation apparatus and method
US4099413A (en) 1976-06-25 1978-07-11 Yokogawa Electric Works, Ltd. Thermal noise thermometer
US4102199A (en) 1976-08-26 1978-07-25 Megasystems, Inc. RTD measurement system
US4122719A (en) 1977-07-08 1978-10-31 Environmental Systems Corporation System for accurate measurement of temperature
JPS54111050A (en) 1978-02-21 1979-08-31 Toyota Motor Corp Automatic speed changer
US4255964A (en) 1978-11-30 1981-03-17 The Garrett Corporation Fluid monitor
US4250490A (en) 1979-01-19 1981-02-10 Rosemount Inc. Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal
US4249164A (en) 1979-05-14 1981-02-03 Tivy Vincent V Flow meter
US4279013A (en) 1979-10-31 1981-07-14 The Valeron Corporation Machine process controller
GB2067756B (en) 1980-01-15 1983-11-16 Marconi Co Ltd Liquid level measurement
US4337516A (en) 1980-06-26 1982-06-29 United Technologies Corporation Sensor fault detection by activity monitoring
FR2486654A1 (fr) 1980-07-08 1982-01-15 Cgr Dispositif d'activation d'un appareil de mesure d'emission acoustique par detection du bruit de fond
US4390321A (en) 1980-10-14 1983-06-28 American Davidson, Inc. Control apparatus and method for an oil-well pump assembly
DE3213866A1 (de) 1980-12-18 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Verfahren und schaltungsanordnung zur bestimmung des wertes des ohmschen widerstandes eines messobjekts
JPS57157761A (en) 1981-03-25 1982-09-29 Brother Ind Ltd Printer
JPS57196619A (en) 1981-05-29 1982-12-02 Hitachi Ltd Failure diagnostic system for analog-to-digital converter
US4446741A (en) 1981-06-01 1984-05-08 Prvni Brnenska Strojirna, Narodni Podnik Vibration transducer
US4417312A (en) 1981-06-08 1983-11-22 Worcester Controls Corporation Electronic controller for valve actuators
US4404747A (en) 1981-07-29 1983-09-20 Schur, Inc. Knife and sheath assembly
US4459858A (en) 1981-09-18 1984-07-17 Marsh-Mcbirney, Inc. Flow meter having an electromagnetic sensor probe
US4399824A (en) 1981-10-05 1983-08-23 Air-Shields, Inc. Apparatus for detecting probe dislodgement
US4463612A (en) 1981-12-10 1984-08-07 The Babcock & Wilcox Company Electronic circuit using digital techniques for vortex shedding flowmeter signal processing
JPS58128686A (ja) 1982-01-26 1983-08-01 三菱鉛筆株式会社 炭素系コイル状抵抗発熱体の製造方法
JPS58129316A (ja) 1982-01-29 1983-08-02 Mitsubishi Heavy Ind Ltd 検出器異常診断装置
JPS58182164A (ja) 1982-04-20 1983-10-25 Nec Home Electronics Ltd エレベ−タ装置
US4536753A (en) 1982-08-02 1985-08-20 Del Norte Technology, Inc. Self monitoring intruder detecting system of noise-cancelling vibration detectors
US4571689A (en) 1982-10-20 1986-02-18 The United States Of America As Represented By The Secretary Of The Air Force Multiple thermocouple testing device
JPS59116811A (ja) 1982-12-24 1984-07-05 Hitachi Ltd 入力異常診断方法
JPS59163520A (ja) 1983-03-09 1984-09-14 Yokogawa Hokushin Electric Corp 電磁流量計
JPS59176643A (ja) 1983-03-25 1984-10-06 Mitsubishi Heavy Ind Ltd 弁微少リ−ク量測定装置
US4565456A (en) 1983-04-13 1986-01-21 Omron Tateisi Electronics Co. Electronic thermometer
US4668473A (en) 1983-04-25 1987-05-26 The Babcock & Wilcox Company Control system for ethylene polymerization reactor
JPS59211196A (ja) 1983-05-17 1984-11-29 三菱重工業株式会社 検出器応答異常診断装置
JPS59211896A (ja) 1983-05-17 1984-11-30 三菱重工業株式会社 検出器応答異常診断装置
US4530234A (en) 1983-06-30 1985-07-23 Mobil Oil Corporation Method and system for measuring properties of fluids
JPH0619666B2 (ja) 1983-06-30 1994-03-16 富士通株式会社 故障診断処理方式
US4540468A (en) 1983-09-26 1985-09-10 Board Of Trustees Of The University Of Maine Method for determining the degree of completion and pulp yield
JPS6076619A (ja) 1983-10-03 1985-05-01 Mitsubishi Heavy Ind Ltd 検出器応答異常診断装置
US4707796A (en) 1983-10-19 1987-11-17 Calabro Salvatore R Reliability and maintainability indicator
US4686638A (en) 1983-11-04 1987-08-11 Kabushiki Kaisha Kosumo Keiki Leakage inspection method with object type compensation
JPS60131495A (ja) 1983-12-20 1985-07-13 三菱重工業株式会社 検出器異常診断装置
US4705212A (en) 1983-12-27 1987-11-10 Engineering Measurements Co. Method and apparatus for managing steam systems
JPS60174915A (ja) 1984-02-21 1985-09-09 Fuji Electric Co Ltd 低周波励磁電磁流量計
DE3583057D1 (de) 1984-03-31 1991-07-11 Barmag Barmer Maschf Verfahren zur zentralen erfassung von messwerten einer vielzahl von messstellen.
US4649515A (en) 1984-04-30 1987-03-10 Westinghouse Electric Corp. Methods and apparatus for system fault diagnosis and control
US4517468A (en) 1984-04-30 1985-05-14 Westinghouse Electric Corp. Diagnostic system and method
US4644479A (en) 1984-07-31 1987-02-17 Westinghouse Electric Corp. Diagnostic apparatus
US4642782A (en) 1984-07-31 1987-02-10 Westinghouse Electric Corp. Rule based diagnostic system with dynamic alteration capability
US4630265A (en) 1984-09-26 1986-12-16 General Electric Company Method and apparatus for selecting for use between data buses in a redundant bus communication system
DE3503597C1 (de) 1985-02-02 1986-07-10 Carl Schenck Ag, 6100 Darmstadt Servo-Beschleunigungsaufnehmer für tiefe Frequenzen
JPH0734162B2 (ja) 1985-02-06 1995-04-12 株式会社日立製作所 類推制御方法
US4758308A (en) 1985-03-05 1988-07-19 Carr Wayne F System for monitoring contaminants with a detector in a paper pulp stream
JPS61208089A (ja) 1985-03-11 1986-09-16 株式会社堀場製作所 Ｃｒｔデイスプレイ装置におけるグラフイツク表示画面への直線カ−ソルの表示方法
JPS6280535A (ja) 1985-10-03 1987-04-14 Ishikawajima Harima Heavy Ind Co Ltd バルブリ−ク検出方法
US5179540A (en) 1985-11-08 1993-01-12 Harris Corporation Programmable chip enable logic function
DE3540204C1 (de) 1985-11-13 1986-09-25 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung in einem Kraftfahrzeug zur Anzeige der Aussentemperatur
US4807151A (en) 1986-04-11 1989-02-21 Purdue Research Foundation Electrical technique for correcting bridge type mass air flow rate sensor errors resulting from ambient temperature variations
GB8611360D0 (en) 1986-05-09 1986-06-18 Eaton Williams Raymond H Air condition monitor unit
US4696191A (en) 1986-06-24 1987-09-29 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for void/particulate detection
JPS6340825A (ja) 1986-08-07 1988-02-22 Terumo Corp 電子体温計
US4736367A (en) 1986-12-22 1988-04-05 Chrysler Motors Corporation Smart control and sensor devices single wire bus multiplex system
JPS63169532A (ja) 1987-01-06 1988-07-13 Mitsubishi Heavy Ind Ltd 弁リ−クの監視装置
US5005142A (en) 1987-01-30 1991-04-02 Westinghouse Electric Corp. Smart sensor system for diagnostic monitoring
US4736763A (en) 1987-02-26 1988-04-12 Britton George L Automatic device for the detection and shutoff of unwanted liquid flow in pipes
DE3708204C1 (de) 1987-03-13 1988-06-23 Kulzer & Co Gmbh Behandlungskammer zum Photopolymerisieren von Dental-Kunststoffen
EP0308455B1 (de) 1987-04-02 1993-01-27 Eftag Entstaubungs- Und Fördertechnik Ag Schaltungsanordnung zur auswertung der von einem halbleitergassensor erzeugten signale
US4833922A (en) 1987-06-01 1989-05-30 Rosemount Inc. Modular transmitter
US4988990A (en) 1989-05-09 1991-01-29 Rosemount Inc. Dual master implied token communication system
US5122794A (en) 1987-08-11 1992-06-16 Rosemount Inc. Dual master implied token communication system
US4873655A (en) 1987-08-21 1989-10-10 Board Of Regents, The University Of Texas System Sensor conditioning method and apparatus
JPS6472699A (en) 1987-09-12 1989-03-17 Sony Corp Speaker diaphragm and its manufacture
ATE186789T1 (de) 1987-09-30 1999-12-15 Du Pont Expertensystem mit verfahrenssteuerung
US4907167A (en) 1987-09-30 1990-03-06 E. I. Du Pont De Nemours And Company Process control system with action logging
US4818994A (en) 1987-10-22 1989-04-04 Rosemount Inc. Transmitter with internal serial bus
US4831564A (en) 1987-10-22 1989-05-16 Suga Test Instruments Co., Ltd. Apparatus for estimating and displaying remainder of lifetime of xenon lamps
US5274572A (en) 1987-12-02 1993-12-28 Schlumberger Technology Corporation Method and apparatus for knowledge-based signal monitoring and analysis
US4866628A (en) 1987-12-18 1989-09-12 International Business Machines Corp. Automated production dispatch system with feedback control
US5488697A (en) 1988-01-12 1996-01-30 Honeywell Inc. Problem state monitoring system
US5193143A (en) 1988-01-12 1993-03-09 Honeywell Inc. Problem state monitoring
US4841286A (en) 1988-02-08 1989-06-20 Honeywell Inc. Apparatus and method for detection of an open thermocouple in a process control network
US4924418A (en) 1988-02-10 1990-05-08 Dickey-John Corporation Universal monitor
JPH0763586B2 (ja) 1988-03-04 1995-07-12 川崎製鉄株式会社 コークス炉ガス脱硫液の再生における廃空気の処理方法
JPH0774961B2 (ja) 1988-04-07 1995-08-09 株式会社日立製作所 オートチユーニングｐｉｄ調節計
US4926364A (en) 1988-07-25 1990-05-15 Westinghouse Electric Corp. Method and apparatus for determining weighted average of process variable
US4964125A (en) 1988-08-19 1990-10-16 Hughes Aircraft Company Method and apparatus for diagnosing faults
US5197328A (en) 1988-08-25 1993-03-30 Fisher Controls International, Inc. Diagnostic apparatus and method for fluid control valves
US5067099A (en) 1988-11-03 1991-11-19 Allied-Signal Inc. Methods and apparatus for monitoring system performance
US5099436A (en) 1988-11-03 1992-03-24 Allied-Signal Inc. Methods and apparatus for performing system fault diagnosis
EP0369489A3 (en) 1988-11-18 1991-11-27 Omron Corporation Sensor controller system
US5025344A (en) 1988-11-30 1991-06-18 Carnegie Mellon University Built-in current testing of integrated circuits
JP2714091B2 (ja) 1989-01-09 1998-02-16 株式会社日立製作所 フィールド計器
NL8900050A (nl) 1989-01-10 1990-08-01 Philips Nv Inrichting voor het meten van een ruststroom van een geintegreerde monolitische digitale schakeling, geintegreerde monolitische digitale schakeling voorzien van een dergelijke inrichting en testapparaat voorzien van een dergelijke inrichting.
US5098197A (en) 1989-01-30 1992-03-24 The United States Of America As Represented By The United States Department Of Energy Optical Johnson noise thermometry
US5089979A (en) 1989-02-08 1992-02-18 Basic Measuring Instruments Apparatus for digital calibration of detachable transducers
US5081598A (en) 1989-02-21 1992-01-14 Westinghouse Electric Corp. Method for associating text in automatic diagnostic system to produce recommended actions automatically
US4939753A (en) 1989-02-24 1990-07-03 Rosemount Inc. Time synchronization of control networks
DE4008560C2 (de) 1989-03-17 1995-11-02 Hitachi Ltd Verfahren und Vorrichtung zum Bestimmen einer Restlebensdauer eines Aggregats
JPH0692914B2 (ja) 1989-04-14 1994-11-16 株式会社日立製作所 機器／設備の状態診断システム
US5089984A (en) 1989-05-15 1992-02-18 Allen-Bradley Company, Inc. Adaptive alarm controller changes multiple inputs to industrial controller in order for state word to conform with stored state word
US4934196A (en) 1989-06-02 1990-06-19 Micro Motion, Inc. Coriolis mass flow rate meter having a substantially increased noise immunity
JPH0650557B2 (ja) 1989-07-04 1994-06-29 株式会社日立製作所 フィールド計器の通信方式
US5269311A (en) 1989-08-29 1993-12-14 Abbott Laboratories Method for compensating errors in a pressure transducer
US5293585A (en) 1989-08-31 1994-03-08 Kabushiki Kaisha Toshiba Industrial expert system
JP2712625B2 (ja) 1989-09-19 1998-02-16 横河電機株式会社 信号伝送器
JPH03118424A (ja) 1989-09-30 1991-05-21 Aisin Seiki Co Ltd 振動センサ
DE495001T1 (de) 1989-10-02 1996-01-18 Rosemount Inc In einer arbeitsumgebung montierte steuereinheit.
JP2656637B2 (ja) 1989-11-22 1997-09-24 株式会社日立製作所 プロセス制御システム及び発電プラントプロセス制御システム
JPH03166601A (ja) 1989-11-27 1991-07-18 Hitachi Ltd 制御支援装置
US5019760A (en) 1989-12-07 1991-05-28 Electric Power Research Institute Thermal life indicator
CA2031765C (en) 1989-12-08 1996-02-20 Masahide Nomura Method and system for performing control conforming with characteristics of controlled system
US5633809A (en) 1989-12-22 1997-05-27 American Sigma, Inc. Multi-function flow monitoring apparatus with area velocity sensor capability
US5111531A (en) 1990-01-08 1992-05-05 Automation Technology, Inc. Process control using neural network
JP2753592B2 (ja) 1990-01-18 1998-05-20 横河電機株式会社 ２線式計器
JP2712701B2 (ja) 1990-02-02 1998-02-16 横河電機株式会社 圧力伝送器
US5235527A (en) 1990-02-09 1993-08-10 Toyota Jidosha Kabushiki Kaisha Method for diagnosing abnormality of sensor
US5134574A (en) 1990-02-27 1992-07-28 The Foxboro Company Performance control apparatus and method in a processing plant
US5122976A (en) 1990-03-12 1992-06-16 Westinghouse Electric Corp. Method and apparatus for remotely controlling sensor processing algorithms to expert sensor diagnoses
US5267241A (en) 1990-04-04 1993-11-30 Avasem Corporation Error correction code dynamic range control system
US5053815A (en) 1990-04-09 1991-10-01 Eastman Kodak Company Reproduction apparatus having real time statistical process control
US5047990A (en) 1990-06-01 1991-09-10 The United States Of America As Represented By The Secretary Of The Navy Underwater acoustic data acquisition system
DE69121789T2 (de) 1990-06-04 1997-04-03 Hitachi Ltd Steuerungsvorrichtung für die Steuerung einer gesteuerten Anlage und Steuerungsverfahren dafür
JPH0476799A (ja) * 1990-07-19 1992-03-11 Yamatake Honeywell Co Ltd 熱電対温度センサの寿命判定及び寿命予測装置
US5150289A (en) 1990-07-30 1992-09-22 The Foxboro Company Method and apparatus for process control
US5121467A (en) 1990-08-03 1992-06-09 E.I. Du Pont De Nemours & Co., Inc. Neural network/expert system process control system and method
US5282261A (en) 1990-08-03 1994-01-25 E. I. Du Pont De Nemours And Co., Inc. Neural network process measurement and control
US5197114A (en) 1990-08-03 1993-03-23 E. I. Du Pont De Nemours & Co., Inc. Computer neural network regulatory process control system and method
US5212765A (en) 1990-08-03 1993-05-18 E. I. Du Pont De Nemours & Co., Inc. On-line training neural network system for process control
US5142612A (en) 1990-08-03 1992-08-25 E. I. Du Pont De Nemours & Co. (Inc.) Computer neural network supervisory process control system and method
US5167009A (en) 1990-08-03 1992-11-24 E. I. Du Pont De Nemours & Co. (Inc.) On-line process control neural network using data pointers
US5224203A (en) 1990-08-03 1993-06-29 E. I. Du Pont De Nemours & Co., Inc. On-line process control neural network using data pointers
US5175678A (en) 1990-08-15 1992-12-29 Elsag International B.V. Method and procedure for neural control of dynamic processes
US5340271A (en) 1990-08-18 1994-08-23 Rolls-Royce Plc Flow control method and means
US5130936A (en) 1990-09-14 1992-07-14 Arinc Research Corporation Method and apparatus for diagnostic testing including a neural network for determining testing sufficiency
DE69128996T2 (de) 1990-10-10 1998-09-10 Honeywell Inc Identifizierung eines Prozesssystems
US5367612A (en) 1990-10-30 1994-11-22 Science Applications International Corporation Neurocontrolled adaptive process control system
JP3189326B2 (ja) 1990-11-21 2001-07-16 セイコーエプソン株式会社 生産管理装置および該装置を用いた生産管理方法
US5265031A (en) 1990-11-26 1993-11-23 Praxair Technology, Inc. Diagnostic gas monitoring process utilizing an expert system
US5094109A (en) 1990-12-06 1992-03-10 Rosemount Inc. Pressure transmitter with stress isolation depression
JP3128832B2 (ja) 1991-01-23 2001-01-29 株式会社日立製作所 プラント診断装置及びプラント診断方法
US5214582C1 (en) 1991-01-30 2001-06-26 Edge Diagnostic Systems Interactive diagnostic system for an automobile vehicle and method
US5143452A (en) 1991-02-04 1992-09-01 Rockwell International Corporation System for interfacing a single sensor unit with multiple data processing modules
EP0570505B1 (en) 1991-02-05 1999-03-31 Storage Technology Corporation Knowledge based machine initiated maintenance system and method
JP2636527B2 (ja) 1991-03-04 1997-07-30 三菱電機株式会社 電気機器収納装置の絶縁劣化防止及び絶縁劣化予測診断装置
JPH07112299B2 (ja) 1991-03-07 1995-11-29 横河電機株式会社 プロセス信号受信装置
US5137370A (en) 1991-03-25 1992-08-11 Delta M Corporation Thermoresistive sensor system
US5357449A (en) 1991-04-26 1994-10-18 Texas Instruments Incorporated Combining estimates using fuzzy sets
US5251469A (en) 1991-04-29 1993-10-12 Rockwell International Corporation Calibration system
WO1992020026A1 (en) 1991-05-03 1992-11-12 Storage Technology Corporation Knowledge based resource management
US5114664A (en) 1991-05-06 1992-05-19 General Electric Company Method for in situ evaluation of capacitive type pressure transducers in a nuclear power plant
US5195098A (en) 1991-05-10 1993-03-16 Echelon Corporation Binary data error correction using hint signal
US5671335A (en) 1991-05-23 1997-09-23 Allen-Bradley Company, Inc. Process optimization using a neural network
US5317520A (en) 1991-07-01 1994-05-31 Moore Industries International Inc. Computerized remote resistance measurement system with fault detection
JP3182807B2 (ja) 1991-09-20 2001-07-03 株式会社日立製作所 多機能流体計測伝送装置及びそれを用いた流体量計測制御システム
US5365787A (en) 1991-10-02 1994-11-22 Monitoring Technology Corp. Noninvasive method and apparatus for determining resonance information for rotating machinery components and for anticipating component failure from changes therein
US5414645A (en) 1991-10-25 1995-05-09 Mazda Motor Corporation Method of fault diagnosis in an apparatus having sensors
US5327357A (en) 1991-12-03 1994-07-05 Praxair Technology, Inc. Method of decarburizing molten metal in the refining of steel using neural networks
EP0616688B1 (en) 1991-12-13 1996-04-17 Honeywell Inc. Piezoresistive silicon pressure sensor design
US5365423A (en) 1992-01-08 1994-11-15 Rockwell International Corporation Control system for distributed sensors and actuators
US5282131A (en) 1992-01-21 1994-01-25 Brown And Root Industrial Services, Inc. Control system for controlling a pulp washing system using a neural network controller
US5349541A (en) 1992-01-23 1994-09-20 Electric Power Research Institute, Inc. Method and apparatus utilizing neural networks to predict a specified signal value within a multi-element system
EP0565761B1 (en) 1992-04-15 1997-07-09 Mita Industrial Co. Ltd. An image forming apparatus provided with self-diagnosis system
GB9208704D0 (en) 1992-04-22 1992-06-10 Foxboro Ltd Improvements in and relating to sensor units
JP2783059B2 (ja) 1992-04-23 1998-08-06 株式会社日立製作所 プロセス状態検出装置、及び半導体センサおよびその状態表示装置
ES2046114B1 (es) 1992-05-08 1995-08-01 Iberditan Sa Sistema de control automatico de compactacion en prensas.
JP3100757B2 (ja) 1992-06-02 2000-10-23 三菱電機株式会社 監視診断装置
FR2692037B1 (fr) 1992-06-03 1997-08-08 Thomson Csf Procede de diagnostic d'un processus evolutif.
CA2097558C (en) 1992-06-16 2001-08-21 William B. Kilgore Directly connected display of process control system in an open systems windows environment
JPH0695882B2 (ja) 1992-07-06 1994-11-30 ふみ子 斉藤 発酵茶飲料
EP0655887B1 (de) 1992-08-22 1996-05-22 CLAAS KGaA Vorrichtung zur messung eines massestromes
US5384699A (en) 1992-08-24 1995-01-24 Associated Universities, Inc. Preventive maintenance system for the photomultiplier detector blocks of pet scanners
US5477444A (en) 1992-09-14 1995-12-19 Bhat; Naveen V. Control system using an adaptive neural network for target and path optimization for a multivariable, nonlinear process
US5347843A (en) 1992-09-23 1994-09-20 Korr Medical Technologies Inc. Differential pressure flowmeter with enhanced signal processing for respiratory flow measurement
US5644240A (en) 1992-09-30 1997-07-01 Cobe Laboratories, Inc. Differential conductivity hemodynamic monitor
US5469070A (en) 1992-10-16 1995-11-21 Rosemount Analytical Inc. Circuit for measuring source resistance of a sensor
US5228780A (en) 1992-10-30 1993-07-20 Martin Marietta Energy Systems, Inc. Dual-mode self-validating resistance/Johnson noise thermometer system
US5388465A (en) 1992-11-17 1995-02-14 Yamatake-Honeywell Co., Ltd. Electromagnetic flowmeter
AT399235B (de) 1992-12-24 1995-04-25 Vaillant Gmbh Verfahren zur funktionskontrolle eines temperaturfühlers
US5486996A (en) 1993-01-22 1996-01-23 Honeywell Inc. Parameterized neurocontrollers
JP3170381B2 (ja) 1993-02-12 2001-05-28 オムロン株式会社 電池の寿命判定装置
US5392293A (en) 1993-02-26 1995-02-21 At&T Corp. Built-in current sensor for IDDQ testing
JPH06248224A (ja) 1993-02-27 1994-09-06 Toagosei Chem Ind Co Ltd フッ素樹脂塗料組成物
US5790413A (en) 1993-03-22 1998-08-04 Exxon Chemical Patents Inc. Plant parameter detection by monitoring of power spectral densities
US5394341A (en) 1993-03-25 1995-02-28 Ford Motor Company Apparatus for detecting the failure of a sensor
US5774378A (en) 1993-04-21 1998-06-30 The Foxboro Company Self-validating sensors
CA2161655A1 (en) 1993-04-30 1994-11-10 James David Keeler Method and apparatus for determining the sensitivity of inputs to a neural network on output parameters
FR2705155A1 (fr) 1993-05-12 1994-11-18 Philips Laboratoire Electroniq Dispositif et méthode pour générer une fonction d'approximation.
US5510779A (en) 1993-06-04 1996-04-23 Drexelbrook Controls, Inc. Error compensating instrument system with digital communications
US5410495A (en) 1993-07-20 1995-04-25 Texas Instruments Incorporated Apparatus, systems, and methods for diagnosing anomalous mass flow controller operation
US5361628A (en) 1993-08-02 1994-11-08 Ford Motor Company System and method for processing test measurements collected from an internal combustion engine for diagnostic purposes
US5539638A (en) 1993-08-05 1996-07-23 Pavilion Technologies, Inc. Virtual emissions monitor for automobile
JP2546159B2 (ja) 1993-08-05 1996-10-23 日本電気株式会社 生産管理システム
US5386373A (en) 1993-08-05 1995-01-31 Pavilion Technologies, Inc. Virtual continuous emission monitoring system with sensor validation
US5549137A (en) 1993-08-25 1996-08-27 Rosemount Inc. Valve positioner with pressure feedback, dynamic correction and diagnostics
US5404064A (en) 1993-09-02 1995-04-04 The United States Of America As Represented By The Secretary Of The Navy Low-frequency electrostrictive ceramic plate voltage sensor
AU7562394A (en) 1993-09-07 1995-03-27 Rosemount Inc. Multivariable transmitter
US5481200A (en) 1993-09-15 1996-01-02 Rosemont Inc. Field transmitter built-in test equipment
US5489831A (en) 1993-09-16 1996-02-06 Honeywell Inc. Pulse width modulating motor controller
US5481199A (en) 1993-09-24 1996-01-02 Anderson; Karl F. System for improving measurement accuracy of transducer by measuring transducer temperature and resistance change using thermoelectric voltages
US5408406A (en) 1993-10-07 1995-04-18 Honeywell Inc. Neural net based disturbance predictor for model predictive control
US5442639A (en) 1993-10-12 1995-08-15 Ship Star Associates, Inc. Method and apparatus for monitoring a communications network
US5610324A (en) 1993-11-08 1997-03-11 Fugitive Emissions Detection Devices, Inc. Fugitive emissions indicating device
CH687047A5 (de) 1993-11-30 1996-08-30 Hler Ag B Verfahren zur Regelung einer Arbeitsmaschine
JP2893233B2 (ja) 1993-12-09 1999-05-17 株式会社ユニシアジェックス 筒内圧センサの診断装置
US5526293A (en) 1993-12-17 1996-06-11 Texas Instruments Inc. System and method for controlling semiconductor wafer processing
US5764539A (en) 1994-01-21 1998-06-09 Novartis Nutrition Ag Non-invasive system and method for a fluid flow monitoring system
JPH07225530A (ja) 1994-02-15 1995-08-22 Canon Inc 画像記録用熱定着器の診断装置および画像記録装置
US5440478A (en) 1994-02-22 1995-08-08 Mercer Forge Company Process control method for improving manufacturing operations
JPH07234988A (ja) 1994-02-23 1995-09-05 Mitsubishi Heavy Ind Ltd 異常診断装置
CN1141679A (zh) 1994-02-23 1997-01-29 罗斯蒙德公司 用于储存信息的现场发送器
US5434774A (en) 1994-03-02 1995-07-18 Fisher Controls International, Inc. Interface apparatus for two-wire communication in process control loops
US5436705A (en) 1994-04-18 1995-07-25 Xerox Corporation Adaptive process controller for electrophotographic printing
JP3139597B2 (ja) 1994-04-27 2001-03-05 横河電機株式会社 圧力測定装置における導圧管の詰まり診断装置
US5528516A (en) 1994-05-25 1996-06-18 System Management Arts, Inc. Apparatus and method for event correlation and problem reporting
FR2720498B1 (fr) 1994-05-27 1996-08-09 Schlumberger Services Petrol Débitmètre multiphasique.
US5629870A (en) 1994-05-31 1997-05-13 Siemens Energy & Automation, Inc. Method and apparatus for predicting electric induction machine failure during operation
US5483387A (en) 1994-07-22 1996-01-09 Honeywell, Inc. High pass optical filter
JPH0854923A (ja) 1994-08-10 1996-02-27 Idemitsu Material Kk プロセスデータ診断方法および診断装置
US5533383A (en) 1994-08-18 1996-07-09 General Electric Company Integrated acoustic leak detection processing system
US5608650A (en) 1994-08-19 1997-03-04 Spectrel Partners, L.L.C. Systems and methods for testing pump flow rates
US5623605A (en) 1994-08-29 1997-04-22 Lucent Technologies Inc. Methods and systems for interprocess communication and inter-network data transfer
US5669713A (en) 1994-09-27 1997-09-23 Rosemount Inc. Calibration of process control temperature transmitter
JPH08102241A (ja) 1994-09-30 1996-04-16 Toshiba Corp 負荷制御装置
EP0784786A1 (en) 1994-10-08 1997-07-23 Honeywell S.A. Transmitter sensor
JPH08114638A (ja) 1994-10-14 1996-05-07 Meidensha Corp 機器異常診断装置
EP0788627B1 (en) 1994-10-24 1999-12-15 Fisher-Rosemount Systems, Inc. Apparatus for providing access to field devices in a distributed control system
DE59407059D1 (de) 1994-10-25 1998-11-12 Rieter Ingolstadt Spinnerei Backplane-Steuerung für Spinnereimaschine
US5704011A (en) 1994-11-01 1997-12-30 The Foxboro Company Method and apparatus for providing multivariable nonlinear control
JP3129121B2 (ja) 1994-11-10 2001-01-29 横河電機株式会社 管路閉塞検出装置
US5551306A (en) 1994-12-06 1996-09-03 Hersey Measurement Company Magnetic flowmeter
JP2682478B2 (ja) 1994-12-12 1997-11-26 日本電気株式会社 チップ状固体電解コンデンサ及びその製造方法
JPH08166309A (ja) 1994-12-13 1996-06-25 Yokogawa Electric Corp 導圧管の詰まり診断機構付き差圧測定装置
CN1106601C (zh) 1994-12-28 2003-04-23 欧姆龙株式会社 使用分级模型的推理系统及方法和控制系统及方法
US5570034A (en) 1994-12-29 1996-10-29 Intel Corporation Using hall effect to monitor current during IDDQ testing of CMOS integrated circuits
US5600148A (en) 1994-12-30 1997-02-04 Honeywell Inc. Low power infrared scene projector array and method of manufacture
US5572438A (en) 1995-01-05 1996-11-05 Teco Energy Management Services Engery management and building automation system
DE19502499A1 (de) 1995-01-27 1996-08-01 Pepperl & Fuchs Bussystem zur Steuerung und Aktivierung von miteinander vernetzten ASI-Slaves, vorzugsweise binäre Sensoren oder Eingangsmodule und/oder Ausgangsmodule oder Aktuatoren eines Aktuator-Sensor-Interface
US5887657A (en) 1995-02-09 1999-03-30 Baker Hughes Incorporated Pressure test method for permanent downhole wells and apparatus therefore
US5637802A (en) 1995-02-28 1997-06-10 Rosemount Inc. Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates
US5731522A (en) 1997-03-14 1998-03-24 Rosemount Inc. Transmitter with isolation assembly for pressure sensor
US5672247A (en) 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
JP3746089B2 (ja) 1995-03-14 2006-02-15 松下冷機株式会社 圧縮機の性能劣化診断装置
US5708585A (en) 1995-03-20 1998-01-13 General Motors Corporation Combustible gas measurement
US6151560A (en) 1995-03-27 2000-11-21 Jones; Thaddeus M. Open circuit failure monitoring apparatus for controlled electrical resistance heaters
US5572420A (en) 1995-04-03 1996-11-05 Honeywell Inc. Method of optimal controller design for multivariable predictive control utilizing range control
US5650943A (en) 1995-04-10 1997-07-22 Leak Detection Services, Inc. Apparatus and method for testing for valve leaks by differential signature method
JPH08313466A (ja) 1995-05-17 1996-11-29 Chino Corp 熱電対劣化検知装置
SE510296C2 (sv) 1995-05-22 1999-05-10 Jerker Delsing Sätt och anordningar vid mätning av flöde
US5781878A (en) 1995-06-05 1998-07-14 Nippondenso Co., Ltd. Apparatus and method for diagnosing degradation or malfunction of oxygen sensor
US5741074A (en) 1995-06-06 1998-04-21 Thermo Electrioc Corporation Linear integrated sensing transmitter sensor
WO1996039617A1 (en) 1995-06-06 1996-12-12 Rosemount Inc. Open sensor diagnostic system for temperature transmitter in a process control system
US5650777A (en) 1995-06-07 1997-07-22 Rosemount Inc. Conversion circuit for process control system
US5561599A (en) 1995-06-14 1996-10-01 Honeywell Inc. Method of incorporating independent feedforward control in a multivariable predictive controller
JPH095092A (ja) 1995-06-16 1997-01-10 Maspro Denkoh Corp 移動体位置検出装置
US5742845A (en) 1995-06-22 1998-04-21 Datascape, Inc. System for extending present open network communication protocols to communicate with non-standard I/O devices directly coupled to an open network
US5578763A (en) 1995-06-22 1996-11-26 The Trustees Of Columbia University In The City Of New York Electromagnetic flow meter
US5555190A (en) 1995-07-12 1996-09-10 Micro Motion, Inc. Method and apparatus for adaptive line enhancement in Coriolis mass flow meter measurement
US5745049A (en) * 1995-07-20 1998-04-28 Yokogawa Electric Corporation Wireless equipment diagnosis system
US5736649A (en) 1995-08-23 1998-04-07 Tokico Ltd. Vortex flowmeter
US5705978A (en) 1995-09-29 1998-01-06 Rosemount Inc. Process control transmitter
EP0770858B1 (de) 1995-10-26 1999-12-29 Endress + Hauser Flowtec AG Coriolis-Massedurchflussaufnehmer mit einem einzigen Messrohr
JP3263296B2 (ja) 1995-10-26 2002-03-04 株式会社東芝 電磁流量計
US5956484A (en) 1995-12-13 1999-09-21 Immersion Corporation Method and apparatus for providing force feedback over a computer network
US5940290A (en) 1995-12-06 1999-08-17 Honeywell Inc. Method of predictive maintenance of a process control system having fluid movement
EP0866998B1 (en) 1995-12-06 2000-03-01 Honeywell Inc. A method of predictive maintenance of a process control system haivng fluid movement
CA2165400C (en) 1995-12-15 1999-04-20 Jean Serodes Method of predicting residual chlorine in water supply systems
FR2742861B1 (fr) 1995-12-22 1998-03-13 Naphtachimie Sa Procede et dispositif de mesure de vibrations
US6014902A (en) 1995-12-28 2000-01-18 The Foxboro Company Magnetic flowmeter with diagnostics
US5700090A (en) 1996-01-03 1997-12-23 Rosemount Inc. Temperature sensor transmitter with sensor sheath lead
US5746511A (en) 1996-01-03 1998-05-05 Rosemount Inc. Temperature transmitter with on-line calibration using johnson noise
US5817950A (en) 1996-01-04 1998-10-06 Rosemount Inc. Flow measurement compensation technique for use with an averaging pitot tube type primary element
ES2136467T3 (es) 1996-01-17 1999-11-16 Siemens Ag Aparato de automatizacion.
DE29600609U1 (de) 1996-01-17 1997-02-13 Siemens Ag Automatisierungsgerät
US5801689A (en) 1996-01-22 1998-09-01 Extended Systems, Inc. Hypertext based remote graphic user interface control system
US6094600A (en) 1996-02-06 2000-07-25 Fisher-Rosemount Systems, Inc. System and method for managing a transaction database of records of changes to field device configurations
US6209048B1 (en) 1996-02-09 2001-03-27 Ricoh Company, Ltd. Peripheral with integrated HTTP server for remote access using URL's
US5764891A (en) 1996-02-15 1998-06-09 Rosemount Inc. Process I/O to fieldbus interface circuit
US5665899A (en) 1996-02-23 1997-09-09 Rosemount Inc. Pressure sensor diagnostics in a process transmitter
US7085610B2 (en) 1996-03-28 2006-08-01 Fisher-Rosemount Systems, Inc. Root cause diagnostics
US8290721B2 (en) 1996-03-28 2012-10-16 Rosemount Inc. Flow measurement diagnostics
US6017143A (en) 1996-03-28 2000-01-25 Rosemount Inc. Device in a process system for detecting events
US6654697B1 (en) 1996-03-28 2003-11-25 Rosemount Inc. Flow measurement with diagnostics
US7254518B2 (en) 1996-03-28 2007-08-07 Rosemount Inc. Pressure transmitter with diagnostics
US6907383B2 (en) 1996-03-28 2005-06-14 Rosemount Inc. Flow diagnostic system
US7630861B2 (en) 1996-03-28 2009-12-08 Rosemount Inc. Dedicated process diagnostic device
US6539267B1 (en) 1996-03-28 2003-03-25 Rosemount Inc. Device in a process system for determining statistical parameter
US5909368A (en) 1996-04-12 1999-06-01 Fisher-Rosemount Systems, Inc. Process control system using a process control strategy distributed among multiple control elements
IE76714B1 (en) 1996-04-19 1997-10-22 Auro Environmental Ltd Apparatus for measuring the velocity of a fluid flowing in a conduit
US5710370A (en) 1996-05-17 1998-01-20 Dieterich Technology Holding Corp. Method for calibrating a differential pressure fluid flow measuring system
US5708211A (en) 1996-05-28 1998-01-13 Ohio University Flow regime determination and flow measurement in multiphase flow pipelines
US5752008A (en) 1996-05-28 1998-05-12 Fisher-Rosemount Systems, Inc. Real-time process control simulation method and apparatus
US5805442A (en) 1996-05-30 1998-09-08 Control Technology Corporation Distributed interface architecture for programmable industrial control systems
US5728947A (en) 1996-06-12 1998-03-17 Asahi/America, Inc. Ultrasonic vortex flowmeter having clamp-on housing
US5668322A (en) 1996-06-13 1997-09-16 Rosemount Inc. Apparatus for coupling a transmitter to process fluid having a sensor extension selectively positionable at a plurality of angles
US5680109A (en) 1996-06-21 1997-10-21 The Foxboro Company Impulse line blockage detector systems and methods
DE19624929C2 (de) 1996-06-21 2001-08-02 Siemens Ag Prozeßautomatisierungssystem
US5781024A (en) 1996-07-26 1998-07-14 Diametrics Medical, Inc. Instrument performance verification system
EP0825506B1 (en) 1996-08-20 2013-03-06 Invensys Systems, Inc. Methods and apparatus for remote process control
US5854994A (en) 1996-08-23 1998-12-29 Csi Technology, Inc. Vibration monitor and transmission system
US5713668A (en) 1996-08-23 1998-02-03 Accutru International Corporation Self-verifying temperature sensor
DE19634997C2 (de) 1996-08-30 1999-08-05 Voith Sulzer Papiermasch Gmbh Regeleinrichtung mit einer Sensoren-Mehrzahl
US6023399A (en) 1996-09-24 2000-02-08 Hitachi, Ltd. Decentralized control system and shutdown control apparatus
US5857777A (en) 1996-09-25 1999-01-12 Claud S. Gordon Company Smart temperature sensing device
US5936514A (en) 1996-09-27 1999-08-10 Rosemount Inc. Power supply input circuit for field instrument
US6377859B1 (en) 1996-10-04 2002-04-23 Fisher Controls International, Inc. Maintenance interface device for a use in a process control network
DE19640937B4 (de) 1996-10-04 2013-11-28 Robert Bosch Gmbh Vorrichtung zur Überwachung der Meßwerterfassung bei einer Motorsteuerung
US5970430A (en) 1996-10-04 1999-10-19 Fisher Controls International, Inc. Local device and process diagnostics in a process control network having distributed control functions
US6047222A (en) 1996-10-04 2000-04-04 Fisher Controls International, Inc. Process control network with redundant field devices and buses
BR9712194A (pt) 1996-10-04 1999-08-31 Fisher Controls Int Interface entre uma rede de comunicações e um sistema de controle de processo, programa de software que implementa uma interface entre uma rede de comunicações e um sistema de controle de processo para execução em um processador, artigo de fabricação implementando uma interface de programa de software entre uma rede de comunicações e um sistema de controle de processo para execução em um processador, e, interface adaptada a fim de ser acoplada entre uma rede de comunicações remota e um sistema de controle de processo.
US6006338A (en) 1996-10-04 1999-12-21 Rosemont Inc. Process transmitter communication circuit
US5734975A (en) 1996-10-24 1998-03-31 Motorola, Inc. Direct-coupled signaling receiver with PL/DPL detector
US5859964A (en) 1996-10-25 1999-01-12 Advanced Micro Devices, Inc. System and method for performing real time data acquisition, process modeling and fault detection of wafer fabrication processes
US5956487A (en) 1996-10-25 1999-09-21 Hewlett-Packard Company Embedding web access mechanism in an appliance for user interface functions including a web server and web browser
US6601005B1 (en) 1996-11-07 2003-07-29 Rosemount Inc. Process device diagnostics using process variable sensor signal
US5828567A (en) 1996-11-07 1998-10-27 Rosemount Inc. Diagnostics for resistance based transmitter
US6041287A (en) 1996-11-07 2000-03-21 Reliance Electric Industrial Company System architecture for on-line machine diagnostics
US6434504B1 (en) 1996-11-07 2002-08-13 Rosemount Inc. Resistance based process control device diagnostics
US6519546B1 (en) 1996-11-07 2003-02-11 Rosemount Inc. Auto correcting temperature transmitter with resistance based sensor
US6754601B1 (en) 1996-11-07 2004-06-22 Rosemount Inc. Diagnostics for resistive elements of process devices
US5956663A (en) 1996-11-07 1999-09-21 Rosemount, Inc. Signal processing technique which separates signal components in a sensor for sensor diagnostics
US6449574B1 (en) 1996-11-07 2002-09-10 Micro Motion, Inc. Resistance based process control device diagnostics
US5719378A (en) 1996-11-19 1998-02-17 Illinois Tool Works, Inc. Self-calibrating temperature controller
US5869772A (en) 1996-11-27 1999-02-09 Storer; William James A. Vortex flowmeter including cantilevered vortex and vibration sensing beams
IT1286007B1 (it) 1996-11-28 1998-06-26 Sgs Thomson Microelectronics Misuratore di flusso di un fluido
US5854993A (en) 1996-12-10 1998-12-29 Caterpillar Inc. Component machine testing using neural network processed vibration data analysis
JPH10187224A (ja) 1996-12-25 1998-07-14 Smc Corp 自動コントロールシステム
EP0948759B1 (en) 1996-12-31 2002-08-07 Rosemount Inc. Device in a process system for validating a control signal from a field device
JPH10198657A (ja) 1997-01-08 1998-07-31 Toshiba Corp 信号処理装置
DE19703359A1 (de) 1997-01-30 1998-08-06 Telefunken Microelectron Verfahren zur Temperaturkompensation bei Meßsystemen
JPH10232170A (ja) 1997-02-20 1998-09-02 Chino Corp 熱電対劣化予測装置
WO1998039718A1 (en) 1997-03-04 1998-09-11 Emerson Electric Co. Distributed diagnostic system
JPH10261185A (ja) 1997-03-19 1998-09-29 Hitachi Ltd 入出力混在形信号変換器
US6059254A (en) 1997-03-27 2000-05-09 Rosemount Inc. Process instrument mount
US6002952A (en) 1997-04-14 1999-12-14 Masimo Corporation Signal processing apparatus and method
GB2324606B (en) 1997-04-25 2002-01-16 Kent Meters Ltd Electromagnetic flowmeter
US5848383A (en) 1997-05-06 1998-12-08 Integrated Sensor Solutions System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature
DE19724167C2 (de) 1997-06-07 1999-07-15 Deutsch Zentr Luft & Raumfahrt Verfahren und Vorrichtung zum Ermitteln eines Meßwerts einer Zielmeßgröße einer Mehr-Phasen-Strömung
NL1006366C2 (nl) 1997-06-20 1998-12-22 Meco Equip Eng Werkwijze en inrichting voor het hechten van soldeerballen aan een substraat.
US5923557A (en) 1997-08-01 1999-07-13 Hewlett-Packard Company Method and apparatus for providing a standard interface to process control devices that are adapted to differing field-bus protocols
US5995910A (en) 1997-08-29 1999-11-30 Reliance Electric Industrial Company Method and system for synthesizing vibration data
JP3326714B2 (ja) 1997-09-10 2002-09-24 株式会社山武 電磁流量計
US6282454B1 (en) 1997-09-10 2001-08-28 Schneider Automation Inc. Web interface to a programmable controller
DE19742716C5 (de) 1997-09-26 2005-12-01 Phoenix Contact Gmbh & Co. Kg Steuer- und Datenübertragungsanlage und Verfahren zum Übertragen von sicherheitsbezogenen Daten
US6014612A (en) 1997-10-02 2000-01-11 Fisher Controls International, Inc. Remote diagnostics in a process control network having distributed control functions
EP1023650B1 (en) 1997-10-13 2003-09-24 Rosemount Inc. Communication technique for field devices in industrial processes
JPH11118657A (ja) 1997-10-21 1999-04-30 Cosmo Keiki:Kk ドリフト補正値算出装置及びこの算出装置を具備した洩れ検査装置
US6311136B1 (en) 1997-11-26 2001-10-30 Invensys Systems, Inc. Digital flowmeter
US7124646B2 (en) 1997-11-26 2006-10-24 Invensys Systems, Inc. Correcting for two-phase flow in a digital flowmeter
US6047244A (en) 1997-12-05 2000-04-04 Rosemount Inc. Multiple range transition method and apparatus for process control sensors
US6260004B1 (en) 1997-12-31 2001-07-10 Innovation Management Group, Inc. Method and apparatus for diagnosing a pump system
US6112131A (en) 1998-02-06 2000-08-29 Zellweger Uster, Inc. Gin process control
US5900801A (en) 1998-02-27 1999-05-04 Food Safety Solutions Corp. Integral master system for monitoring food service requirements for compliance at a plurality of food service establishments
US6199018B1 (en) 1998-03-04 2001-03-06 Emerson Electric Co. Distributed diagnostic system
US6016523A (en) 1998-03-09 2000-01-18 Schneider Automation, Inc. I/O modular terminal having a plurality of data registers and an identification register and providing for interfacing between field devices and a field master
US6139180A (en) 1998-03-27 2000-10-31 Vesuvius Crucible Company Method and system for testing the accuracy of a thermocouple probe used to measure the temperature of molten steel
US6283138B1 (en) 1998-04-24 2001-09-04 Anderson, Greenwood Lp Pressure relief valve monitoring device
US6072150A (en) 1998-05-27 2000-06-06 Beamworks Ltd. Apparatus and method for in-line soldering
FI114745B (fi) 1998-06-01 2004-12-15 Metso Automation Oy Kenttälaitteiden hallintajärjestelmä
FI108678B (fi) 1998-06-17 2002-02-28 Neles Controls Oy Kenttälaitteiden hallintajärjestelmä
US6615091B1 (en) 1998-06-26 2003-09-02 Eveready Battery Company, Inc. Control system and method therefor
US5965819A (en) 1998-07-06 1999-10-12 Csi Technology Parallel processing in a vibration analyzer
US6360277B1 (en) 1998-07-22 2002-03-19 Crydom Corporation Addressable intelligent relay
US6272438B1 (en) 1998-08-05 2001-08-07 Micro Motion, Inc. Vibrating conduit parameter sensors, methods and computer program products for generating residual-flexibility-compensated mass flow estimates
US6046642A (en) 1998-09-08 2000-04-04 Motorola, Inc. Amplifier with active bias compensation and method for adjusting quiescent current
US6738388B1 (en) 1998-09-10 2004-05-18 Fisher-Rosemount Systems, Inc. Shadow function block interface for use in a process control network
US6289735B1 (en) 1998-09-29 2001-09-18 Reliance Electric Technologies, Llc Machine diagnostic system and method for vibration analysis
US6757665B1 (en) 1999-09-28 2004-06-29 Rockwell Automation Technologies, Inc. Detection of pump cavitation/blockage and seal failure via current signature analysis
US6327914B1 (en) 1998-09-30 2001-12-11 Micro Motion, Inc. Correction of coriolis flowmeter measurements due to multiphase flows
FR2784193B1 (fr) 1998-10-05 2001-01-05 Texas Instruments France Mecanisme integre permettant une detection de defaillances par test automatique en temps reel pour un convertisseur analogique/numerique
GB9821972D0 (en) 1998-10-08 1998-12-02 Abb Kent Taylor Ltd Flowmeter logging
US6611775B1 (en) 1998-12-10 2003-08-26 Rosemount Inc. Electrode leakage diagnostics in a magnetic flow meter
US6615149B1 (en) 1998-12-10 2003-09-02 Rosemount Inc. Spectral diagnostics in a magnetic flow meter
IT1304079B1 (it) 1998-12-31 2001-03-07 Abb Research Ltd Dispositivo di collaudo per sistemi di controllo industriali
DE19905071A1 (de) 1999-02-08 2000-08-10 Siemens Ag Meßumformer sowie Verfahren zur Diagnose der Versorgung eines Meßumformers
US6298454B1 (en) 1999-02-22 2001-10-02 Fisher-Rosemount Systems, Inc. Diagnostics in a process control system
US7206646B2 (en) 1999-02-22 2007-04-17 Fisher-Rosemount Systems, Inc. Method and apparatus for performing a function in a plant using process performance monitoring with process equipment monitoring and control
DE60029196T2 (de) 1999-02-25 2007-06-28 Rosemount Inc., Eden Prairie Strömungsmessung mit diagnostischen mitteln
US6546814B1 (en) 1999-03-13 2003-04-15 Textron Systems Corporation Method and apparatus for estimating torque in rotating machinery
US6564268B1 (en) 1999-03-17 2003-05-13 Rosemount Inc. Fieldbus message queuing method and apparatus
JP2000278132A (ja) 1999-03-24 2000-10-06 Matsushita Electric Ind Co Ltd 多信号のクランプ装置
US6304828B1 (en) 1999-04-02 2001-10-16 The United States Of America As Represented By The Secretary Of The Navy System and method for calibrating a signal detection threshold circuit
AU5025600A (en) 1999-05-17 2000-12-05 Foxboro Company, The Process control configuration system with parameterized objects
US6298308B1 (en) 1999-05-20 2001-10-02 Reid Asset Management Company Diagnostic network with automated proactive local experts
EP1058093B1 (de) 1999-05-29 2003-01-29 MTL Instruments GmbH Verfahren und Schaltungsanordnung zur Spannungsversorgung und Funktionsüberwachung zumindest eines Messwertumformers
US6356191B1 (en) 1999-06-17 2002-03-12 Rosemount Inc. Error compensation for a process fluid temperature transmitter
WO2001003099A1 (en) 1999-07-01 2001-01-11 Rosemount, Inc. Low power two-wire self validating temperature transmitter
US6915364B1 (en) 1999-07-02 2005-07-05 Fisher Rosemount Systems, Inc. Automatically downloaded link active schedule
DE19930660A1 (de) 1999-07-02 2001-01-11 Siemens Ag Verfahren zur Überwachung oder zur Installation neuer Programmcodes in einer industriellen Anlage
US6505517B1 (en) 1999-07-23 2003-01-14 Rosemount Inc. High accuracy signal processing for magnetic flowmeter
RU2196307C2 (ru) * 1999-08-02 2003-01-10 Предприятие "Астраханьгазпром" ОАО "Газпром" Способ диагностирования цепей измерения температур
DE19936858C1 (de) 1999-08-05 2001-05-23 Siemens Ag Aktoranordnung, insbesondere zur Ansteuerung eines Einspritzventils einer Brennkraftmaschine
US6701274B1 (en) 1999-08-27 2004-03-02 Rosemount Inc. Prediction of error magnitude in a pressure transmitter
US6618745B2 (en) 1999-09-10 2003-09-09 Fisher Rosemount Systems, Inc. Linking device in a process control system that allows the formation of a control loop having function blocks in a controller and in field devices
DE60043362D1 (de) 1999-09-15 2009-12-31 Resmed Ltd Synchronisierung einer Beatmungsvorrichtung mittels Doppelphasensensoren
US6556145B1 (en) 1999-09-24 2003-04-29 Rosemount Inc. Two-wire fluid temperature transmitter with thermocouple diagnostics
US6425038B1 (en) 1999-09-28 2002-07-23 Rockwell Automation Technologies, Inc. Conversion of desk-top operating system for real-time control using installable interrupt service routines
DE19947129A1 (de) 1999-09-30 2001-04-05 Siemens Ag Diagnosesystem und -verfahren, insbesondere für ein Ventil
DE29917651U1 (de) 1999-10-07 2000-11-09 Siemens Ag Meßumformer sowie Prozeßleitsystem
US6567006B1 (en) 1999-11-19 2003-05-20 Flow Metrix, Inc. Monitoring vibrations in a pipeline network
EP1109374A3 (de) 1999-12-13 2001-06-27 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Verfahren und Vorrichtung zur Durchführung von Netzwerkoperationen
US6561038B2 (en) 2000-01-06 2003-05-13 Rosemount Inc. Sensor with fluid isolation barrier
US6378364B1 (en) 2000-01-13 2002-04-30 Halliburton Energy Services, Inc. Downhole densitometer
FI110425B (fi) 2000-04-12 2003-01-31 Metso Paper Inc Menetelmä kiinnirullaimen toimintavarmuuden parantamiseksi
FI114507B (fi) 2000-07-07 2004-10-29 Metso Automation Oy Laitediagnostiikkajärjestelmä
DE10033586A1 (de) 2000-07-11 2002-01-24 Bosch Gmbh Robert Verfahren und Vorrichtung zur Fehlererkennung bzw. Diagnose
RU2190267C2 (ru) 2000-07-19 2002-09-27 Юркевич Геннадий Петрович Способ управления ядерным реактором
DE10036971A1 (de) 2000-07-28 2002-02-28 Siemens Ag Verfahren zur Ferndiagnose eines technologischen Prozesses
US6751560B1 (en) 2000-08-01 2004-06-15 The Charles Stark Draper Laboratory, Inc. Non-invasive pipeline inspection system
AU2001293056A1 (en) 2000-09-25 2002-04-08 Motorwiz, Inc. Model-based machine diagnostics and prognostics using theory of noise and communications
US6480793B1 (en) 2000-10-27 2002-11-12 Westinghouse Electric Company Lcl Flow condition monitor
US6648082B2 (en) 2000-11-07 2003-11-18 Halliburton Energy Services, Inc. Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
FI117143B (fi) 2000-11-30 2006-06-30 Metso Automation Oy Soodakattilan nuohousmenetelmä ja -laitteisto
US6493689B2 (en) 2000-12-29 2002-12-10 General Dynamics Advanced Technology Systems, Inc. Neural net controller for noise and vibration reduction
US6993445B2 (en) 2001-01-16 2006-01-31 Invensys Systems, Inc. Vortex flowmeter
US6970003B2 (en) 2001-03-05 2005-11-29 Rosemount Inc. Electronics board life prediction of microprocessor-based transmitters
US6819292B2 (en) 2001-03-09 2004-11-16 Arad Measuring Technologies Ltd Meter register
US6912671B2 (en) 2001-05-07 2005-06-28 Bisher-Rosemount Systems, Inc Wiring fault detection, diagnosis and reporting for process control systems
US6859755B2 (en) 2001-05-14 2005-02-22 Rosemount Inc. Diagnostics for industrial process control and measurement systems
US7149597B2 (en) 2001-05-29 2006-12-12 John Billings Process control system and method
US6662120B2 (en) 2001-06-19 2003-12-09 Endress + Hauser Flowtec Ag Excitation circuits for coriolis mass flowmeters
US6772036B2 (en) 2001-08-30 2004-08-03 Fisher-Rosemount Systems, Inc. Control system using process model
US7168429B2 (en) 2001-10-12 2007-01-30 Ric Investments, Llc Auto-titration pressure support system and method of using same
CA2378791A1 (en) 2002-03-25 2003-09-25 Mcmaster University Method of detection of flow duct obstruction
DE10218830C1 (de) 2002-04-26 2003-12-18 Siemens Ag Diagnosesystem und -verfahren für ein Ventil
US6614271B1 (en) 2002-06-13 2003-09-02 Intel Corporation Signal detect circuit for high speed data receivers
JP2004021712A (ja) 2002-06-18 2004-01-22 Yokogawa Electric Corp 設備診断支援システム
JP2004034112A (ja) 2002-07-05 2004-02-05 Hitachi Ltd 圧延設備の診断支援方法および診断支援システム
US7109883B2 (en) 2002-09-06 2006-09-19 Rosemount Inc. Low power physical layer for a bus in an industrial transmitter
US7039476B2 (en) 2002-09-27 2006-05-02 Siemens Building Technologies, Inc. Control system with filtered dead zone
US7114516B2 (en) 2002-10-15 2006-10-03 Takasago Engineering Co., Ltd. Leak-detecting check valve, and leak-detection alarm system that uses said check valve
JP2004186445A (ja) 2002-12-03 2004-07-02 Omron Corp モデル化装置及びモデル解析方法並びにプロセス異常検出・分類システム及びプロセス異常検出・分類方法並びにモデル化システム及びモデル化方法並びに故障予知システム及びモデル化装置の更新方法
US7040179B2 (en) 2002-12-06 2006-05-09 Endress+ Hauser Flowtec Ag Process meter
US20040128034A1 (en) 2002-12-11 2004-07-01 Lenker Jay A. Method and apparatus for water flow sensing and control
US20040199361A1 (en) 2003-04-01 2004-10-07 Ching-Shan Lu Method and apparatus for equipment diagnostics and recovery with self-learning
US6904476B2 (en) 2003-04-04 2005-06-07 Rosemount Inc. Transmitter with dual protocol interface
CN1853098B (zh) 2003-07-18 2010-12-08 罗斯蒙德公司 声学流量计和监测工业过程中固定设备的健康程度的方法
US7280048B2 (en) 2003-08-07 2007-10-09 Rosemount Inc. Process control loop current verification
US7018800B2 (en) 2003-08-07 2006-03-28 Rosemount Inc. Process device with quiescent current diagnostics
US7627441B2 (en) 2003-09-30 2009-12-01 Rosemount Inc. Process device with vibration based diagnostics
US7435581B2 (en) 2003-11-26 2008-10-14 Broadley-James Corporation Integrated bio-reactor monitor and control system
US7079558B2 (en) 2003-12-01 2006-07-18 Excel/Quantronix, Inc. Mode-locked laser method and apparatus
US7523667B2 (en) 2003-12-23 2009-04-28 Rosemount Inc. Diagnostics of impulse piping in an industrial process
US7258021B2 (en) 2004-06-25 2007-08-21 Rosemount Inc. Process transmitter isolation assembly
US7036381B2 (en) 2004-06-25 2006-05-02 Rosemount Inc. High temperature pressure transmitter assembly
CA2578490A1 (en) 2004-08-31 2006-03-09 Watlow Electric Manufacturing Company Operations system distributed diagnostic system
US7181654B2 (en) 2004-09-17 2007-02-20 Fisher-Rosemount Systems, Inc. System and method for detecting an abnormal situation associated with a reactor
DE602005016310D1 (de) 2005-02-15 2009-10-08 Abb Research Ltd Diagnoseeinrichtung für ein prozesssteuersystem
US7577543B2 (en) 2005-03-11 2009-08-18 Honeywell International Inc. Plugged impulse line detection
WO2006107952A1 (en) 2005-04-04 2006-10-12 Fisher-Rosemount Systems, Inc. Diagnostics in industrial process control system
WO2006136036A1 (en) 2005-06-21 2006-12-28 Abb Research Ltd Diagnostic device for use in process control system
DE102005030612B4 (de) 2005-06-30 2014-09-11 Infineon Technologies Ag Halteeinrichtung für ein Sensorsignal, Verfahren zum Weiterleiten eines Sensorsignals und Computerprogramm
JP2007040763A (ja) 2005-08-01 2007-02-15 Toyota Motor Corp 加速度センサの補正装置
JP4970820B2 (ja) 2006-03-27 2012-07-11 横河電機株式会社 導圧管詰まり検出装置及び導圧管詰まり検出方法
US7528737B2 (en) 2006-04-10 2009-05-05 Rosemount Inc. Temperature responsive indicators for process control instruments
US7778797B2 (en) 2006-09-28 2010-08-17 Fisher-Rosemount Systems, Inc. Method and system for detecting abnormal operation in a stirred vessel
US7891354B2 (en) 2006-09-29 2011-02-22 Nellcor Puritan Bennett Llc Systems and methods for providing active noise control in a breathing assistance system
US7880626B2 (en) * 2006-10-12 2011-02-01 Masimo Corporation System and method for monitoring the life of a physiological sensor
JP5336042B2 (ja) 2006-12-18 2013-11-06 オークマ株式会社 工作機械における温度センサの異常検知方法
KR20090123921A (ko) 2007-02-26 2009-12-02 퀄컴 인코포레이티드 신호 분리를 위한 시스템, 방법 및 장치
US7770459B2 (en) 2007-07-20 2010-08-10 Rosemount Inc. Differential pressure diagnostic for process fluid pulsations
US7698077B2 (en) 2007-11-09 2010-04-13 Applied Micro Circuits Corporation System and method for signal level detection
FR2932625B1 (fr) 2008-06-16 2010-05-28 Airbus France Dispositif de comptage d'oscillations d'un signal temporel oscillant
US8408787B2 (en) 2009-01-09 2013-04-02 Rosemount Inc. Process temperature transmitter with improved temperature calculation
US7821437B1 (en) 2009-04-08 2010-10-26 Rosemount Inc. Line noise analysis and detection and measurement error reduction
US8311778B2 (en) 2009-09-22 2012-11-13 Rosemount Inc. Industrial process control transmitter with multiple sensors
US8864378B2 (en) 2010-06-07 2014-10-21 Rosemount Inc. Process variable transmitter with thermocouple polarity detection
US9057634B2 (en) 2010-08-11 2015-06-16 Rosemount Inc. Noise detection and avoidance
US8449181B2 (en) 2010-08-26 2013-05-28 Rosemount Inc. Process fluid temperature measurement
US9207670B2 (en) 2011-03-21 2015-12-08 Rosemount Inc. Degrading sensor detection implemented within a transmitter
US9020768B2 (en) 2011-08-16 2015-04-28 Rosemount Inc. Two-wire process control loop current diagnostics
US9052240B2 (en) * 2012-06-29 2015-06-09 Rosemount Inc. Industrial process temperature transmitter with sensor stress diagnostics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103512679A (zh) * 2012-06-29 2014-01-15 罗斯蒙德公司 利用传感器应力诊断的工业过程温度变送器
CN103512679B (zh) * 2012-06-29 2016-02-24 罗斯蒙特公司 利用传感器应力诊断的工业过程温度变送器
CN106918408A (zh) * 2017-03-02 2017-07-04 顺丰科技有限公司 一种无源测温装置及其使用方法

Also Published As

Publication number Publication date
US20140003465A1 (en) 2014-01-02
US9052240B2 (en) 2015-06-09
WO2014003996A2 (en) 2014-01-03
CN103512679A (zh) 2014-01-15
EP2867634B1 (en) 2016-04-13
JP2015522160A (ja) 2015-08-03
EP2867634A2 (en) 2015-05-06
CA2877701A1 (en) 2014-01-03
CN103512679B (zh) 2016-02-24
RU2594623C1 (ru) 2016-08-20
WO2014003996A3 (en) 2014-05-15
IN2014MN02410A (zh) 2015-08-21
CA2877701C (en) 2017-05-23
JP6058134B2 (ja) 2017-01-11

Similar Documents

Publication Publication Date Title
CN202994334U (zh) 用于感测工业过程的温度的温度变送器
US6594603B1 (en) Resistive element diagnostics for process devices
US6449574B1 (en) Resistance based process control device diagnostics
RU2543689C2 (ru) Измерение температуры технологической текучей среды
US6970003B2 (en) Electronics board life prediction of microprocessor-based transmitters
JP4824234B2 (ja) ２線式温度送信機およびプロセス温度測定方法
CN100465976C (zh) 通用传感器适配器
CN102959363B (zh) 具有双线过程控制回路诊断的过程变量变送器
US9453611B2 (en) Propane tank continuous monitoring system
CN103376755B (zh) 过程变送器中的过程变量补偿
US20100201342A1 (en) Verfahren zum Betreiben eines Feldgerates
CN105092095A (zh) 温度标定方法及装置
CN203177991U (zh) 利用emf检测和校正的过程变量变送器
CN110608809B (zh) 基于热敏电阻的温度测量设备、模块及其方法
CN109145250B (zh) 传感器服务预测
JP4738596B2 (ja) 抵抗型プロセス制御装置の診断
CN105277292A (zh) 一种温度测量装置
CN107830945A (zh) 一种超灵敏温差传感器
KR101606406B1 (ko) 액체금속 온도보상 유량측정 계기장치
CN204301886U (zh) 测温电路
CN204855014U (zh) 一种电阻式温度计
CN102305672A (zh) 一种汽车动力转向液的温度测量装置
Divakar Design and Implementation of Microcontroller Based Temperature Data Logging System
Odungide Self-Validating Sensors, Types and Uncertainty: A Literature Review
CN104635566A (zh) 多种替选的自动化输入系统和方法

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20200911