JPS57184950A - Vibration type density meter - Google Patents

Vibration type density meter

Info

Publication number
JPS57184950A
JPS57184950A JP7040781A JP7040781A JPS57184950A JP S57184950 A JPS57184950 A JP S57184950A JP 7040781 A JP7040781 A JP 7040781A JP 7040781 A JP7040781 A JP 7040781A JP S57184950 A JPS57184950 A JP S57184950A
Authority
JP
Japan
Prior art keywords
signal
fluid
measured
circuit
density meter
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
JP7040781A
Other languages
Japanese (ja)
Other versions
JPS6139609B2 (en
Inventor
Kyoichi Ikeda
Katsumi Isozaki
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP7040781A priority Critical patent/JPS57184950A/en
Publication of JPS57184950A publication Critical patent/JPS57184950A/en
Publication of JPS6139609B2 publication Critical patent/JPS6139609B2/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
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis

Landscapes

  • Physics & Mathematics (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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To improve measuring accuracy by inputting a signal related to the Q of a mechanical vibrator and a signal related to a resonant frequency into a computing circuit to perform computation, and obtaining a density signal wherein the effect of the viscosity of fluid to be measured is eliminated. CONSTITUTION:A density meter is formed by a cylindrical resonator 1 as the mechanical vibrator through which the fluid to be measured passes, a driving means 2 for the resonator, and a detecting means 3. The signal from the detecting means 3 is inputted to an oscillator 4, and its output is given to the driving means 2. Thus a self-oscillating type oscillating loop is formed. The output of a counter 5 which counts the frequency of the oscillator 4 and a gain measuring circuit 6 which measures the Q of the vibrator 1 are inputted to the computing circuit 7, and a specified computation is performed. Thus the density signal is obtained and displayed on a display circuit 8. Therefore, the effect of the viscosity of the fluid to be measured can be eliminated without using a viscosimeter and the like and the measuring accuracy can be improved.
JP7040781A 1981-05-11 1981-05-11 Vibration type density meter Granted JPS57184950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7040781A JPS57184950A (en) 1981-05-11 1981-05-11 Vibration type density meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7040781A JPS57184950A (en) 1981-05-11 1981-05-11 Vibration type density meter

Publications (2)

Publication Number Publication Date
JPS57184950A true JPS57184950A (en) 1982-11-13
JPS6139609B2 JPS6139609B2 (en) 1986-09-04

Family

ID=13430577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7040781A Granted JPS57184950A (en) 1981-05-11 1981-05-11 Vibration type density meter

Country Status (1)

Country Link
JP (1) JPS57184950A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196531A (en) * 1987-08-28 1989-04-14 Thorn Emi Plc Method and apparatus for measuring fluid density
JP2003315235A (en) * 2002-04-26 2003-11-06 Ulvac Japan Ltd Analytical method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196531A (en) * 1987-08-28 1989-04-14 Thorn Emi Plc Method and apparatus for measuring fluid density
JP2003315235A (en) * 2002-04-26 2003-11-06 Ulvac Japan Ltd Analytical method

Also Published As

Publication number Publication date
JPS6139609B2 (en) 1986-09-04

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