MX9804832A - Transmision de la temperatura, con calibracion en linea, que usa la interferencia de johnson. - Google Patents

Transmision de la temperatura, con calibracion en linea, que usa la interferencia de johnson.

Info

Publication number
MX9804832A
MX9804832A MX9804832A MX9804832A MX9804832A MX 9804832 A MX9804832 A MX 9804832A MX 9804832 A MX9804832 A MX 9804832A MX 9804832 A MX9804832 A MX 9804832A MX 9804832 A MX9804832 A MX 9804832A
Authority
MX
Mexico
Prior art keywords
output
temperature
resistance
circuitry
provides
Prior art date
Application number
MX9804832A
Other languages
English (en)
Inventor
Evren Eryurek
Gary Lenz
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
Publication of MX9804832A publication Critical patent/MX9804832A/es

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00—Testing or calibrating of thermometers
    • 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
    • G01K7/30—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermal noise of resistances or conductors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

Un transmisor (10) de la temperatura y un sistema de control de proceso, incluyen una entrada (1, 2, 3, 4) de sensor, para acoplarse al sensor (16) de la temperatura, que tiene una resistencia dependiente de la temperatura. El sistema de circuitos (20, 26, 50), que mide la resistencia, se acopla a la entrada (1, 2, 3, 4) del sensor y suministra una salida de la resistencia relacionada con la resistencia dependiente de la temperatura. Un sistema de circuitos (78, 88) de conversion analogico en digital, se acopla a la entrada (1, 2, 3, 4) del sensor y suministra una salida digital relacionada a las señales de corriente alterna (CA), a través de la entrada del sensor. El sistema (64) de circuitos de proceso de la señal digital incluye un componente de la interferencia de Johnson de las señales de CA y suministra una salida digitalizada de Johnson. El sistema de circuitos que mide la temperatura suministra una salida de temperatura calibrada, con base en la salida de la resistencia y la salida digitalizada de la interferencia de Johnson. El sistema de circuitos (24) de salida transmite la salida de la temperatura calibrada sobre el circuito (11) de control del proceso.
MX9804832A 1996-01-03 1998-06-16 Transmision de la temperatura, con calibracion en linea, que usa la interferencia de johnson. MX9804832A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/582,514 US5746511A (en) 1996-01-03 1996-01-03 Temperature transmitter with on-line calibration using johnson noise

Publications (1)

Publication Number Publication Date
MX9804832A true MX9804832A (es) 1998-09-30

Family

ID=24329445

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9804832A MX9804832A (es) 1996-01-03 1998-06-16 Transmision de la temperatura, con calibracion en linea, que usa la interferencia de johnson.

Country Status (7)

Country Link
US (1) US5746511A (es)
EP (1) EP0871851B1 (es)
CN (1) CN1130552C (es)
CA (1) CA2240909A1 (es)
DE (1) DE69632871T2 (es)
MX (1) MX9804832A (es)
WO (1) WO1997025602A1 (es)

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Also Published As

Publication number Publication date
EP0871851B1 (en) 2004-07-07
DE69632871D1 (de) 2004-08-12
DE69632871T2 (de) 2005-03-17
CN1130552C (zh) 2003-12-10
CA2240909A1 (en) 1997-07-17
WO1997025602A1 (en) 1997-07-17
EP0871851A1 (en) 1998-10-21
CN1205771A (zh) 1999-01-20
US5746511A (en) 1998-05-05

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