JPS55149032A - Pressure fluctuation abnormality detector - Google Patents

Pressure fluctuation abnormality detector

Info

Publication number
JPS55149032A
JPS55149032A JP5597579A JP5597579A JPS55149032A JP S55149032 A JPS55149032 A JP S55149032A JP 5597579 A JP5597579 A JP 5597579A JP 5597579 A JP5597579 A JP 5597579A JP S55149032 A JPS55149032 A JP S55149032A
Authority
JP
Japan
Prior art keywords
output
pressure fluctuation
operated
voltage
pressure
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
JP5597579A
Other languages
Japanese (ja)
Inventor
Hidenori Nagai
Kokichi Yoshinuma
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.)
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Electric Manufacturing 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 Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP5597579A priority Critical patent/JPS55149032A/en
Publication of JPS55149032A publication Critical patent/JPS55149032A/en
Pending legal-status Critical Current

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  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE: To reduce detection time, operate a safety device quickly and minimize the damages at the abnormality by comparing the output of a pressure fluctuation amount setter and the output of a pressure detector in the pressure fluctuation detection of pipe lines of gas or the like.
CONSTITUTION: The voltage signal from a pressure detector 1 is supplied to a differentiator 2 to detect the magnitude of the pressure fluctuations. The output voltage V1 thereof is applied to a voltage comparator 4 and integrator 6. The set voltage V3 of a pressure fluctuation amount setter 3 is applied to the comparator 4 and a switch 5 is operated by the output of the comparator 4 when the magnitude of the pressure fluctuation amount is at the set value or more, by which the integrator 6 is operated. The integrated output V2 and the output V3 of the setter 3 are compared 8 and a relay 9 for external output signal is operated by the compared output, by which a desired safety device is operated.
COPYRIGHT: (C)1980,JPO&Japio
JP5597579A 1979-05-08 1979-05-08 Pressure fluctuation abnormality detector Pending JPS55149032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5597579A JPS55149032A (en) 1979-05-08 1979-05-08 Pressure fluctuation abnormality detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5597579A JPS55149032A (en) 1979-05-08 1979-05-08 Pressure fluctuation abnormality detector

Publications (1)

Publication Number Publication Date
JPS55149032A true JPS55149032A (en) 1980-11-20

Family

ID=13014069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5597579A Pending JPS55149032A (en) 1979-05-08 1979-05-08 Pressure fluctuation abnormality detector

Country Status (1)

Country Link
JP (1) JPS55149032A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172326U (en) * 1983-05-02 1984-11-17 トヨタ自動車株式会社 Instrument circuit
JPS6017317A (en) * 1983-07-11 1985-01-29 Hitachi Ltd Device for preventing detector from malfunction
JPH0212082U (en) * 1988-07-06 1990-01-25
JPH0212081U (en) * 1988-07-06 1990-01-25

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59172326U (en) * 1983-05-02 1984-11-17 トヨタ自動車株式会社 Instrument circuit
JPH0245772Y2 (en) * 1983-05-02 1990-12-04
JPS6017317A (en) * 1983-07-11 1985-01-29 Hitachi Ltd Device for preventing detector from malfunction
JPH0223809B2 (en) * 1983-07-11 1990-05-25 Hitachi Ltd
JPH0212082U (en) * 1988-07-06 1990-01-25
JPH0212081U (en) * 1988-07-06 1990-01-25

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