RU94046114A - Устройство для измерения давления - Google Patents

Устройство для измерения давления

Info

Publication number
RU94046114A
RU94046114A RU94046114/28A RU94046114A RU94046114A RU 94046114 A RU94046114 A RU 94046114A RU 94046114/28 A RU94046114/28 A RU 94046114/28A RU 94046114 A RU94046114 A RU 94046114A RU 94046114 A RU94046114 A RU 94046114A
Authority
RU
Russia
Prior art keywords
pressure
impedance
signals
change
sensor
Prior art date
Application number
RU94046114/28A
Other languages
English (en)
Other versions
RU2139509C1 (ru
Inventor
Л.Фрик Роджер
Us]
С.Мунсон Грегори
Original Assignee
Роузмаунт Инк. (US)
Роузмаунт Инк.
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 Роузмаунт Инк. (US), Роузмаунт Инк. filed Critical Роузмаунт Инк. (US)
Publication of RU94046114A publication Critical patent/RU94046114A/ru
Application granted granted Critical
Publication of RU2139509C1 publication Critical patent/RU2139509C1/ru

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
    • G01L27/005—Apparatus for calibrating pressure sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/02—Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring device; Zero-setting means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
    • G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices
    • G01L9/065—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices with temperature compensating means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor
    • G01L9/125—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Abstract

Двухпроводной датчик содержит сенсор давления, включающий в себя первое и второе сенсорные средства, каждое из которых имеет импеданс, величина которого изменяется с изменением измеряемого давления и с изменением заданного внешнего условия, например линейного давления или температуры. Постоянный импеданс имеет величину, которая остается практически неизменной под действием установленных внешних условий. Переключатель попеременно соединяет постоянный импеданс в рабочую связь с первым и вторым сенсорным средствами, чтобы получить первый и второй сигналы, каждый из которых является функцией измеряемого и заданного внешнего условия. Схема корректировки обрабатывает первый и второй сигналы, например, с помощью многочленных рядов или таблицы преобразования, чтобы получить скорректированный сигнал давления.

Claims (1)

  1. Двухпроводной датчик содержит сенсор давления, включающий в себя первое и второе сенсорные средства, каждое из которых имеет импеданс, величина которого изменяется с изменением измеряемого давления и с изменением заданного внешнего условия, например линейного давления или температуры. Постоянный импеданс имеет величину, которая остается практически неизменной под действием установленных внешних условий. Переключатель попеременно соединяет постоянный импеданс в рабочую связь с первым и вторым сенсорным средствами, чтобы получить первый и второй сигналы, каждый из которых является функцией измеряемого и заданного внешнего условия. Схема корректировки обрабатывает первый и второй сигналы, например, с помощью многочленных рядов или таблицы преобразования, чтобы получить скорректированный сигнал давления.
RU94046114A 1992-05-28 1993-05-17 Устройство для измерения давления RU2139509C1 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/890,627 1992-05-28
US07/890,627 US5329818A (en) 1992-05-28 1992-05-28 Correction of a pressure indication in a pressure transducer due to variations of an environmental condition
PCT/US1993/004673 WO1993024818A2 (en) 1992-05-28 1993-05-17 Correction for a pressure transducer

Publications (2)

Publication Number Publication Date
RU94046114A true RU94046114A (ru) 1996-11-20
RU2139509C1 RU2139509C1 (ru) 1999-10-10

Family

ID=25396915

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94046114A RU2139509C1 (ru) 1992-05-28 1993-05-17 Устройство для измерения давления

Country Status (9)

Country Link
US (1) US5329818A (ru)
EP (1) EP0642658B1 (ru)
JP (1) JP3247379B2 (ru)
CN (1) CN1053499C (ru)
CA (1) CA2133732A1 (ru)
DE (1) DE69319430T2 (ru)
MX (1) MX9303098A (ru)
RU (1) RU2139509C1 (ru)
WO (1) WO1993024818A2 (ru)

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Also Published As

Publication number Publication date
US5329818A (en) 1994-07-19
DE69319430T2 (de) 1999-02-25
WO1993024818A2 (en) 1993-12-09
RU2139509C1 (ru) 1999-10-10
CA2133732A1 (en) 1993-12-09
JP3247379B2 (ja) 2002-01-15
EP0642658A1 (en) 1995-03-15
JPH07507391A (ja) 1995-08-10
EP0642658B1 (en) 1998-07-01
DE69319430D1 (de) 1998-08-06
WO1993024818A3 (en) 1994-02-03
CN1053499C (zh) 2000-06-14
MX9303098A (es) 1994-03-31
CN1079298A (zh) 1993-12-08

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