JPS5444735A - Leak detector with leak indicator - Google Patents

Leak detector with leak indicator

Info

Publication number
JPS5444735A
JPS5444735A JP11172377A JP11172377A JPS5444735A JP S5444735 A JPS5444735 A JP S5444735A JP 11172377 A JP11172377 A JP 11172377A JP 11172377 A JP11172377 A JP 11172377A JP S5444735 A JPS5444735 A JP S5444735A
Authority
JP
Japan
Prior art keywords
input
leak
voltage
wave
output
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
JP11172377A
Other languages
Japanese (ja)
Inventor
Yukio Ashizawa
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP11172377A priority Critical patent/JPS5444735A/en
Publication of JPS5444735A publication Critical patent/JPS5444735A/en
Pending legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To detect leak, and indicate leak amount in an indicator in linear relation, by making a direct current ampere metter to act by half wave of amplified sine wave of output of a zero phase current transformer, and at the same time, making a relay to act through a voltage comparator.
CONSTITUTION: Output of a zero phase current transformer 1 is input to positive input terminal of a calculator amplifier 2, also to the inverted input terminal, voltage which is stabilized by Zener diode 11 is shunted by resistors 12, 13 and are input, voltage wave shape in which only half wave of sine wave in input voltage is amplified linearly is obtained at output terminal of the amplifier 2, this wave is input to next stage voltage comparator 4, relay 27 is made to be acted, and at the same time, it is impressed to a direct current ampere meter 3 through a current limiting resistor 17. Therefore, detection of leak is carried out by the relay 27, and at the same time, linear leak amount can be indicated in the ampere meter 3 by the calculation amplifier 2 in which voltage of input and output are in a linear relation.
COPYRIGHT: (C)1979,JPO&Japio
JP11172377A 1977-09-14 1977-09-14 Leak detector with leak indicator Pending JPS5444735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11172377A JPS5444735A (en) 1977-09-14 1977-09-14 Leak detector with leak indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11172377A JPS5444735A (en) 1977-09-14 1977-09-14 Leak detector with leak indicator

Publications (1)

Publication Number Publication Date
JPS5444735A true JPS5444735A (en) 1979-04-09

Family

ID=14568521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11172377A Pending JPS5444735A (en) 1977-09-14 1977-09-14 Leak detector with leak indicator

Country Status (1)

Country Link
JP (1) JPS5444735A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712960A (en) * 1980-06-24 1982-01-22 Gen Foods Ltd Meat snack analogue
JPS60199352A (en) * 1984-03-26 1985-10-08 味の素株式会社 Production of sausage like food improved in juicy feeling
JPS60207550A (en) * 1984-03-26 1985-10-19 味の素株式会社 Production of sausage like food having heterogenous chewing property
JPS63107415A (en) * 1986-10-22 1988-05-12 富士電機株式会社 Leakage relay

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5712960A (en) * 1980-06-24 1982-01-22 Gen Foods Ltd Meat snack analogue
JPH0257899B2 (en) * 1980-06-24 1990-12-06 Jeneraru Fuuzu Inc
JPS60199352A (en) * 1984-03-26 1985-10-08 味の素株式会社 Production of sausage like food improved in juicy feeling
JPS60207550A (en) * 1984-03-26 1985-10-19 味の素株式会社 Production of sausage like food having heterogenous chewing property
JPH0422532B2 (en) * 1984-03-26 1992-04-17 Ajinomoto Kk
JPH0427814B2 (en) * 1984-03-26 1992-05-12 Ajinomoto Kk
JPS63107415A (en) * 1986-10-22 1988-05-12 富士電機株式会社 Leakage relay

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