JPS5547416A - Supersonic flowmeter - Google Patents

Supersonic flowmeter

Info

Publication number
JPS5547416A
JPS5547416A JP12078079A JP12078079A JPS5547416A JP S5547416 A JPS5547416 A JP S5547416A JP 12078079 A JP12078079 A JP 12078079A JP 12078079 A JP12078079 A JP 12078079A JP S5547416 A JPS5547416 A JP S5547416A
Authority
JP
Japan
Prior art keywords
oscillator
output
time difference
receiving circuit
counter
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
JP12078079A
Other languages
Japanese (ja)
Inventor
Takeshi Hirayama
Kazuo Kato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12078079A priority Critical patent/JPS5547416A/en
Publication of JPS5547416A publication Critical patent/JPS5547416A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To remove malfunctions due to noises and improve prcision in a supersonic flowmeter by restricting time width of gate signals only signal sound wave can pass through. CONSTITUTION:There are provided a receiving circuit 17A or 17B which receives supersonic waves emitted from one oscillator to a measured fluid at the other oscillator, a counter 10 which generates an output when the output of an oscillator 9A or 9B is counted and reaches a prescribed value and a time difference conversion circuit 7 which requires the time difference between the output of this counter 10 and that of the receiving circuit 17A or 17B. Output frequencies of the oscillator are changed according to the output of this time difference conversion circuit 7 and the outflow is measured but when the integrated output of the oscillator reaches a prescribed value the receiving circuit receives supersonic waves from the oscillator for a prescribed time interval.
JP12078079A 1979-09-21 1979-09-21 Supersonic flowmeter Pending JPS5547416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12078079A JPS5547416A (en) 1979-09-21 1979-09-21 Supersonic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12078079A JPS5547416A (en) 1979-09-21 1979-09-21 Supersonic flowmeter

Publications (1)

Publication Number Publication Date
JPS5547416A true JPS5547416A (en) 1980-04-03

Family

ID=14794813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12078079A Pending JPS5547416A (en) 1979-09-21 1979-09-21 Supersonic flowmeter

Country Status (1)

Country Link
JP (1) JPS5547416A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948351A (en) * 1973-04-03 1974-05-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948351A (en) * 1973-04-03 1974-05-10

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