JPS56118633A - Method and apparatus for measuring suction pressure - Google Patents

Method and apparatus for measuring suction pressure

Info

Publication number
JPS56118633A
JPS56118633A JP2235980A JP2235980A JPS56118633A JP S56118633 A JPS56118633 A JP S56118633A JP 2235980 A JP2235980 A JP 2235980A JP 2235980 A JP2235980 A JP 2235980A JP S56118633 A JPS56118633 A JP S56118633A
Authority
JP
Japan
Prior art keywords
pressure
mouthpiece
thin tube
measuring
measuring thin
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.)
Pending
Application number
JP2235980A
Other languages
Japanese (ja)
Inventor
Kotaro Ishitani
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 JP2235980A priority Critical patent/JPS56118633A/en
Publication of JPS56118633A publication Critical patent/JPS56118633A/en
Pending legal-status Critical Current

Links

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
    • G01L7/182—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 constructional details, e.g. mounting

Landscapes

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

Abstract

PURPOSE:To enable the suction pressure to be readily measured with a simple constitution by a method wherein the pressure in the measuring thin tube is made negative by sucking from a mouthpiece, after the suction the mouthpiece is opened, and the pressure water head having risen in the measuring thin tube is measured. CONSTITUTION:The measuring instrument consists of a liquid container 2 communicating with the atmosphere through only a mouthpiece 1 and a measuring thin tube 6. Accordingly, with a resetting small hole 9 closed with a finger 10, making an infant suck at the mouthpiece 1 causes the pressure in the liquid container 2 to become negative. Consequently, the air in the measuring thin tube 6 expands to flow out from the lower opening end 4 as bubbles. Then, when there is no more bubbles produced during the suction, removing the infant from the mouthpiece 1 causes the air to flow back into the liquid container 2 through the mouthpiece 1 and press down the surface of a liquid 3. Consequently, a portion of the liquid 3 rises in the measuring thin tube 6 and appears as a pressure water head 7 at the postion where the pressure in the measuring thin tube 6 balances with the atmospheric pressure, and the pressure water head 7 is read on a measuring graduation portion 5. Thereby the suction pressure can be readily measured with a simple constitution.
JP2235980A 1980-02-25 1980-02-25 Method and apparatus for measuring suction pressure Pending JPS56118633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2235980A JPS56118633A (en) 1980-02-25 1980-02-25 Method and apparatus for measuring suction pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2235980A JPS56118633A (en) 1980-02-25 1980-02-25 Method and apparatus for measuring suction pressure

Publications (1)

Publication Number Publication Date
JPS56118633A true JPS56118633A (en) 1981-09-17

Family

ID=12080433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2235980A Pending JPS56118633A (en) 1980-02-25 1980-02-25 Method and apparatus for measuring suction pressure

Country Status (1)

Country Link
JP (1) JPS56118633A (en)

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