GB2462309B - Pressure gauge - Google Patents

Pressure gauge

Info

Publication number
GB2462309B
GB2462309B GB0814114.5A GB0814114A GB2462309B GB 2462309 B GB2462309 B GB 2462309B GB 0814114 A GB0814114 A GB 0814114A GB 2462309 B GB2462309 B GB 2462309B
Authority
GB
United Kingdom
Prior art keywords
pressure
sensor
threshold
valve
value
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.)
Active
Application number
GB0814114.5A
Other versions
GB2462309A (en
GB0814114D0 (en
Inventor
Cary Ratner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0814114.5A priority Critical patent/GB2462309B/en
Publication of GB0814114D0 publication Critical patent/GB0814114D0/en
Priority to DE102008051372A priority patent/DE102008051372A1/en
Priority to FI20086000A priority patent/FI123192B/en
Publication of GB2462309A publication Critical patent/GB2462309A/en
Application granted granted Critical
Publication of GB2462309B publication Critical patent/GB2462309B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L15/00—Devices or apparatus for measuring two or more fluid pressure values simultaneously
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
    • G01D3/024—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation for range change; Arrangements for substituting one sensing member by another
    • 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
    • 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
    • G01L19/0007—Fluidic connecting means
    • G01L19/0015—Fluidic connecting means using switching means
    • 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
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • 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
    • G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
    • G01L19/0618—Overload protection
    • 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
    • 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
    • G01L9/04—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 resistance-strain gauges
    • G01L9/045—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 resistance-strain gauges with electric temperature compensating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

A pressure gauge 10 for sensing a pressure value comprises a first pressure sensor 12 to provide pressure information in a first pressure range, and a second pressure sensor 14 to provide pressure information in a second relatively higher pressure range, and a controller 16 to derive the pressure value from the pressure information. The controller derives the pressure value from pressure information from only one of the pressure sensors at any given pressure. The gauge 10 also comprises a switch 18 arranged to automatically switch between the pressure sensors 12, 14 at a threshold pressure such that below the threshold pressure, the pressure value is derived from pressure measurements from the first sensor 12, and above the threshold pressure, the pressure value is derived from pressure measurements from the second sensor 14. The switch 18 may be a valve (40, fig. 4) which automatically disconnects the lower pressure sensor 12 when the pressure exceeds the threshold. The valve has a low pressure chamber (50, fig. 4) and a high pressure chamber (48, fig. 4) — the low pressure chamber is sealed when pressure is great enough to force a spring so that a conical valve end fits into a seat. The angled valve end allows the valve to open again when the pressure drops.
GB0814114.5A 2008-08-01 2008-08-01 Pressure gauge Active GB2462309B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0814114.5A GB2462309B (en) 2008-08-01 2008-08-01 Pressure gauge
DE102008051372A DE102008051372A1 (en) 2008-08-01 2008-10-15 pressure monitor
FI20086000A FI123192B (en) 2008-08-01 2008-10-22 Pressure gauge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0814114.5A GB2462309B (en) 2008-08-01 2008-08-01 Pressure gauge

Publications (3)

Publication Number Publication Date
GB0814114D0 GB0814114D0 (en) 2008-09-10
GB2462309A GB2462309A (en) 2010-02-03
GB2462309B true GB2462309B (en) 2012-05-30

Family

ID=39767383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0814114.5A Active GB2462309B (en) 2008-08-01 2008-08-01 Pressure gauge

Country Status (3)

Country Link
DE (1) DE102008051372A1 (en)
FI (1) FI123192B (en)
GB (1) GB2462309B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7779699B2 (en) * 2009-01-13 2010-08-24 Kulite Semiconductor Products, Inc. Apparatus for measuring multiple pressures within different pressure ranges
US8522597B2 (en) * 2010-09-14 2013-09-03 GM Global Technology Operations LLC Calibration of a pressure sensor in a hydrogen storage system
FR3096778B1 (en) * 2019-05-31 2022-01-28 Plastic Omnium Advanced Innovation & Res Device for measuring the pressure in a compressed gas supply circuit
DE102021125293A1 (en) * 2021-09-29 2023-03-30 Gneuss Gmbh Pressure sensor arrangement with a remotely controlled, parameterizable, electrical threshold value device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460498A2 (en) * 1990-06-04 1991-12-11 Dynamic Engineering Inc. Automatic transducer selection system for pressure measurement
WO1999030215A1 (en) * 1997-12-05 1999-06-17 Rosemount Inc. Multiple range transition method and apparatus for process control sensors
US20020182878A1 (en) * 1999-12-14 2002-12-05 Eiji Hirose Pressure control method
US20070122291A1 (en) * 2005-10-17 2007-05-31 Octec Inc. Liquid chemical supply system having a plurality of pressure detectors
JP2008145377A (en) * 2006-12-13 2008-06-26 Denso Corp Pressure sensor
EP2140241A1 (en) * 2007-04-25 2010-01-06 Brooks Automation, Inc. Measurement instrument and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460498A2 (en) * 1990-06-04 1991-12-11 Dynamic Engineering Inc. Automatic transducer selection system for pressure measurement
WO1999030215A1 (en) * 1997-12-05 1999-06-17 Rosemount Inc. Multiple range transition method and apparatus for process control sensors
US20020182878A1 (en) * 1999-12-14 2002-12-05 Eiji Hirose Pressure control method
US20070122291A1 (en) * 2005-10-17 2007-05-31 Octec Inc. Liquid chemical supply system having a plurality of pressure detectors
JP2008145377A (en) * 2006-12-13 2008-06-26 Denso Corp Pressure sensor
EP2140241A1 (en) * 2007-04-25 2010-01-06 Brooks Automation, Inc. Measurement instrument and method

Also Published As

Publication number Publication date
GB2462309A (en) 2010-02-03
DE102008051372A1 (en) 2010-02-04
FI123192B (en) 2012-12-14
FI20086000A (en) 2010-02-02
GB0814114D0 (en) 2008-09-10
FI20086000A0 (en) 2008-10-22

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20220606