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Correction of a pressure indication in a pressure transducer due to variations of an environmental condition

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01L-019/04
  • G01L-009/12
출원번호 US-0890627 (1992-05-28)
발명자 / 주소
  • Frick Roger L. (Hackensack MN) Munson Gregory S. (Minneapolis MN)
출원인 / 주소
  • Rosemount Inc. (Eden Prairie MN 02)
인용정보 피인용 횟수 : 55  인용 특허 : 0

초록

A two-wire transmitter includes a pressure sensor comprising first and second sensing means each having an impedance value which varies with pressure being measured and with a predetermined environmental condition, such as line pressure or temperature. A fixed impedance has an impedance value which

대표청구항

Apparatus for measuring pressure, comprising: a pressure sensor comprising at least first and second sensing means each having an impedance value which varies with pressure and with a predetermined environmental condition; impedance means having an impedance value which is substantially unchanged by

이 특허를 인용한 특허 (55)

  1. Ian Amos CA, Apparatus to calculate dynamic values for pressure density in an aircraft.
  2. Okada, Toru; Kakebayashi, Yasunori, Calibration method for multi-component force measuring spindle unit used in tire testing machine.
  3. Kleven, Lowell A., Capacitance sensing circuit.
  4. Broden, David Andrew; Fogarty, Timothy Patrick; Wiklund, David Eugene; Beachey, Terry Xen; Schumacher, Mark S., Characterization of process pressure sensor.
  5. Schulte, John P.; Tyson, David G.; Klosinski, Andrew J., Differential pressure sensor with line pressure measurement.
  6. Broden, David A.; Hedtke, Robert C.; Klosinski, Andrew J.; Sittler, Fred C., Differential pressure transmitter with complimentary dual absolute pressure sensors.
  7. Hedtke, Robert C., Differential pressure transmitter with pressure sensor.
  8. Rud, Jason H.; Bronczyk, Andrew J., Dynamically adjusted A/D resolution.
  9. Rud, Jason H.; Bronczyk, Andrew J., Dynamically adjusted A/D resolution.
  10. Moginine Gummer Robert Hugh,NZX ; Laws Matthew Edwin,NZX ; McGill Brett Gordon,NZX, Electronic sensor apparatus.
  11. Wang, Rongtai, Excitation circuit for compensated capacitor industrial process control transmitters.
  12. Kuboshima,Tsukasa; Okugawa,Shinichiro; Baba,Hironobu, Exhaust emission control device for internal combustion engine.
  13. Orth, Kelly M., Field device with dynamically adjustable power consumption radio frequency communication.
  14. Dmytriw, Anthony M.; Ricks, Lamar F., Flow sensor with conditioning-coefficient memory.
  15. Kanke,Atsushi; Matsumoto,Masahiro; Igarashi,Shinya; Hanzawa,Keiji; Ueyama,Kei, Flowmeter and flowmeter system.
  16. Vanderaa, Joel D.; Grunig, Christina A.; Hurd, Ronald F.; Westfield, Brian L.; McGuire, Chad M.; Paullus, Steven B., Form factor and electromagnetic interference protection for process device wireless adapters.
  17. Hedtke, Robert C., Industrial process device utilizing piezoelectric transducer.
  18. Hedtke, Robert C., Industrial process device utilizing piezoelectric transducer.
  19. Hedtke, Robert C.; Broden, David A.; Lu, Liang-Ju, Industrial process power scavenging device and method of deriving process device power from an industrial process.
  20. Harasyn,Donald E.; Willcox,Charles R., Line pressure measurement using differential pressure sensor.
  21. Schlachter, Marc; Spitz, Andreas; Dieterle, Roland, Measuring apparatus for determining a pressure difference.
  22. Willcox, Charles R., Method and apparatus for pressure measurement using magnetic property.
  23. Hedtke, Robert C.; Lu, Liangju, Method and apparatus for pressure measurement using quartz crystal.
  24. Bauer, Daniel; Chemisky, Eric; Eckthaler, Sabine; Geppert, Michael; Hahn, Ulrich; Pramanik, Robin; Rohrbach, Simon; Schmith, Peter; Schulmeister, Kurt; Spatz, Martin; Walter, Ralf, Method for accurately acquiring multiple analog input signals, analog input circuit, and measuring sensor and measuring transducer having an analog input circuit of this type.
  25. Petit,Pierre Marie; Moise,Stefan, Method for correcting pressure measurement for the influence of temperature in a sapphire gauge.
  26. Danninger, Dirk Soren, Method of dynamically compensating a process signal.
  27. Bey, Paul Prehn; Hoover, William; Speldrich, Jamie; Jones, Ryan, Modular sensor assembly including removable sensing module.
  28. Chakraborty, Swapan; Karschnia, Robert J., Pipeline thermoelectric generator assembly.
  29. Brown, Gregory C.; Klosinski, Andrew J.; Trimble, Steven R.; Fandrey, Mark, Power generation for process devices.
  30. Arunachalam, Jawahar; Kasturi, Udayashankar Bangalore, Power supply for industrial process field device.
  31. Harasyn,Donald E.; Willcox,Charles R.; Klosinski,Andrew J., Pressure sensor fault detection.
  32. Schumacher,Mark; Klosinski,Andrew, Pressure sensor with deflectable diaphragm.
  33. Dauenhauer Dennis ; Dauenhauer Dale ; Breitenbach Alexander,DEX ; Erichsen Herman, Pressure transducer with error compensation from cross-coupling outputs of two sensors.
  34. Hedtke,Robert C., Pressure transmitter with acoustic pressure sensor.
  35. Klosinski,Andrew J.; Schulte,John P., Process control transmitter with vibration sensor.
  36. Karschnia,Robert J.; Willcox,Charles R.; Broden,David A.; Westfield,Brian L.; Orth,Kelly M., Process field device with radio frequency communication.
  37. Frick Roger L. ; Rud Jr. Stanley E. ; Broden David A., Process pressure measurement devices with improved error compensation.
  38. Frick, Roger L., Process sensor module having a single ungrounded input/output conductor.
  39. Hedtke, Robert C., Process transmitter with wireless communication link.
  40. Sittler, Fred C.; Hedtke, Robert C., Process variable transmitter with acceleration sensor.
  41. Kielb, John A.; Karschnia, Robert J.; Westfield, Brian L.; Orth, Kelly M.; Broden, David A., RF adapter for field device.
  42. Kielb, John A.; Westfield, Brian L., RF adapter for field device with loop current bypass.
  43. Kielb, John A.; Westfield, Brian L.; Orth, Kelly M., RF adapter for field device with low voltage intrinsic safety clamping.
  44. Kielb, John A., RF adapter for field device with variable voltage drop.
  45. Klosinski, Andrew J.; Willcox, Charles R., Resonant frequency based pressure sensor.
  46. Wang, Rongtai, Sigma-delta analog to digital converter for capacitive pressure sensor and process transmitter.
  47. Dmytriw, Anthony M.; Ricks, Lamar F., Signal conditioning IC with conditioning-coefficient memory.
  48. Chakraborty, Swapan, Thermoelectric generator assembly for field process devices.
  49. Broadwater Stuart P. (White Hall MD) Gibson White E. (Baltimore MD) Skeberdis Paul W. (Baltimore MD) Cockey Edward A. (Jarrettsville MD), Time stress measurement device.
  50. Vanderaa, Joel David, Wire harness for field devices used in a hazardous locations.
  51. Vanderaa, Joel D.; Grunig, Christina A.; Hurd, Ronald F., Wireless communication adapter for field devices.
  52. Korolev, Eugene, Wireless interface within transmitter.
  53. Brown, Gregory; Hausler, George; Ostby, Philip; Karschnia, Robert; Nelson, Richard; Fandrey, Mark, Wireless power and communication unit for process field devices.
  54. Strei, David Matthew; Vanderaa, Joel David, Wireless process communication adapter with improved encapsulation.
  55. Nelson, Richard L.; Ostby, Philip G.; Brown, Gregory C., Wireless process field device diagnostics.
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