FR2439987A1 - Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube - Google Patents

Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube

Info

Publication number
FR2439987A1
FR2439987A1 FR7830230A FR7830230A FR2439987A1 FR 2439987 A1 FR2439987 A1 FR 2439987A1 FR 7830230 A FR7830230 A FR 7830230A FR 7830230 A FR7830230 A FR 7830230A FR 2439987 A1 FR2439987 A1 FR 2439987A1
Authority
FR
France
Prior art keywords
atmospheric pressure
tube
valve
steel tube
sealed chamber
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.)
Withdrawn
Application number
FR7830230A
Other languages
French (fr)
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 FR7830230A priority Critical patent/FR2439987A1/en
Publication of FR2439987A1 publication Critical patent/FR2439987A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
    • G01L7/20—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges involving a closed chamber above the liquid level, the chamber being exhausted or housing low-pressure gas; Liquid barometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

Atmospheric pressure is measured by balancing against the height of mercury in a manometric tube. This allows a portable barometer to be produced in which the tube enters a chamber under vacuum while the base of the tube enters a reservoir open to atmospheric pressure. A chamber (1) in the form of a glass bulb contains an electrode (4) which indicates when the mercury level reaches it. The bulb is moved vertically by a line and pulley which is connected to an electromechanical counter system. The chamber communicates with a lower reservoir (3) via a stainless steel flexible tube (2). This reservoir comprises a U-tube with two arms. The flexible tube is conected to one of them while the other is open to the atmosphere. A valve is closed to define the mercury position during transport.
FR7830230A 1978-10-24 1978-10-24 Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube Withdrawn FR2439987A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7830230A FR2439987A1 (en) 1978-10-24 1978-10-24 Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7830230A FR2439987A1 (en) 1978-10-24 1978-10-24 Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube

Publications (1)

Publication Number Publication Date
FR2439987A1 true FR2439987A1 (en) 1980-05-23

Family

ID=9214103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7830230A Withdrawn FR2439987A1 (en) 1978-10-24 1978-10-24 Portable mercury barometer for measuring atmospheric pressure - comprises sealed chamber connected to open reservoir via shut=off valve and flexible steel tube

Country Status (1)

Country Link
FR (1) FR2439987A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389508A (en) * 1944-07-19 1945-11-20 Meriam Instr Company Manometer
FR1586694A (en) * 1968-08-14 1970-02-27
US3667298A (en) * 1969-11-13 1972-06-06 Alsthom Cgee Mercury manometer
FR2360065A1 (en) * 1976-07-30 1978-02-24 Carton Jean Temp. independent barometer system - has pressurised gas bulb compensating for ambient temp. change effects

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389508A (en) * 1944-07-19 1945-11-20 Meriam Instr Company Manometer
FR1586694A (en) * 1968-08-14 1970-02-27
US3667298A (en) * 1969-11-13 1972-06-06 Alsthom Cgee Mercury manometer
FR2360065A1 (en) * 1976-07-30 1978-02-24 Carton Jean Temp. independent barometer system - has pressurised gas bulb compensating for ambient temp. change effects

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
(INSTRUMENTS AND CONTROL SYSTEMS, vol. 43, no. 10, octobre 1970, RADNOR, Pa. (US), H. ARRENDALE: "Precision Pressure Measurements", pages 73-75. *
MEASUREMENT TECHNIQUES, vol. 19, no. 9, septembre 1976, NEW YORK (US), G.I. POLUKHIN et al.: "Special state standards and all-union test scheme for equipment used in measuring pressure differences down to 4.10 4 Pa", pages 1238-1241. *

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Legal Events

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