JPS56140249A - Pressure controlling method in measuring apparatus of characteristics of gas - Google Patents

Pressure controlling method in measuring apparatus of characteristics of gas

Info

Publication number
JPS56140249A
JPS56140249A JP4415280A JP4415280A JPS56140249A JP S56140249 A JPS56140249 A JP S56140249A JP 4415280 A JP4415280 A JP 4415280A JP 4415280 A JP4415280 A JP 4415280A JP S56140249 A JPS56140249 A JP S56140249A
Authority
JP
Japan
Prior art keywords
gas
sound
pressure
pipe
accordance
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.)
Granted
Application number
JP4415280A
Other languages
Japanese (ja)
Other versions
JPS627506B2 (en
Inventor
Masao Haruta
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP4415280A priority Critical patent/JPS56140249A/en
Publication of JPS56140249A publication Critical patent/JPS56140249A/en
Publication of JPS627506B2 publication Critical patent/JPS627506B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To eliminate the change of characteristics of gas due to the pressure change of standard gas when the temperature is changed by controlling the volume changeable part in accordance with the pressure of measured gas vessel, which is connected to the vessel filled by the standard gas. CONSTITUTION:A pair of sound pipes 22, 23 is arranged nearly in the constant temperature oven 21. The measured gas is introduced from a pipe 25 and is exhausted from an exhaust pipe 42 to atmosphere after flowing through the sound pipe 22. The standard gas is filled in the other sound pipe 23. The pressure difference between pipes 22, 23 is detected by the pressure difference detector 41 and the motor 45 is driven in accordance with this pressure difference signal. The pressure is controlled to be equalized by changing the volume of a bellows 44. On the other hand, the standing sound waves in accordance with the distances l1, l2 given by microphones 28, 31, speakers 29, 32 and amplifier 30, 33 and the speeds of sound of the measured gas and the standard gas are conducted to a recorder 36 via a mixing detector 34 and a frequency-voltage convertor 35. And the total quantity of calorific value and the specific gravity of the measured gas is identified. By these, the accuracy of measuring characteristics of gas can be improved.
JP4415280A 1980-04-03 1980-04-03 Pressure controlling method in measuring apparatus of characteristics of gas Granted JPS56140249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4415280A JPS56140249A (en) 1980-04-03 1980-04-03 Pressure controlling method in measuring apparatus of characteristics of gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4415280A JPS56140249A (en) 1980-04-03 1980-04-03 Pressure controlling method in measuring apparatus of characteristics of gas

Publications (2)

Publication Number Publication Date
JPS56140249A true JPS56140249A (en) 1981-11-02
JPS627506B2 JPS627506B2 (en) 1987-02-17

Family

ID=12683650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4415280A Granted JPS56140249A (en) 1980-04-03 1980-04-03 Pressure controlling method in measuring apparatus of characteristics of gas

Country Status (1)

Country Link
JP (1) JPS56140249A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520654A (en) * 1983-03-14 1985-06-04 General Electric Company Method and apparatus for detecting hydrogen, oxygen and water vapor concentrations in a host gas
JPH0255938A (en) * 1987-08-19 1990-02-26 Ford Motor Co Measurement of multiple component of exhaust gas flow components
WO1993008466A1 (en) * 1991-10-23 1993-04-29 Niagara Mohawk Power Corporation Multiple gas property sensor
EP1205748A1 (en) * 2000-11-13 2002-05-15 Siemens-Elema AB Acoustic gas analyser

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520654A (en) * 1983-03-14 1985-06-04 General Electric Company Method and apparatus for detecting hydrogen, oxygen and water vapor concentrations in a host gas
JPH0255938A (en) * 1987-08-19 1990-02-26 Ford Motor Co Measurement of multiple component of exhaust gas flow components
WO1993008466A1 (en) * 1991-10-23 1993-04-29 Niagara Mohawk Power Corporation Multiple gas property sensor
US5235844A (en) * 1991-10-23 1993-08-17 Niagara Mohawk Power Corporation Multiple gas property sensor
EP1205748A1 (en) * 2000-11-13 2002-05-15 Siemens-Elema AB Acoustic gas analyser

Also Published As

Publication number Publication date
JPS627506B2 (en) 1987-02-17

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