JPS57122335A - Water leakage sensing device - Google Patents

Water leakage sensing device

Info

Publication number
JPS57122335A
JPS57122335A JP56007833A JP783381A JPS57122335A JP S57122335 A JPS57122335 A JP S57122335A JP 56007833 A JP56007833 A JP 56007833A JP 783381 A JP783381 A JP 783381A JP S57122335 A JPS57122335 A JP S57122335A
Authority
JP
Japan
Prior art keywords
memory
output
input
water leakage
concentration
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
JP56007833A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0353570B2 (enrdf_load_stackoverflow
Inventor
Tatsuo Hamada
Noboru Nakao
Yoshinori Mae
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 JP56007833A priority Critical patent/JPS57122335A/ja
Publication of JPS57122335A publication Critical patent/JPS57122335A/ja
Publication of JPH0353570B2 publication Critical patent/JPH0353570B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Examining Or Testing Airtightness (AREA)
JP56007833A 1981-01-23 1981-01-23 Water leakage sensing device Granted JPS57122335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56007833A JPS57122335A (en) 1981-01-23 1981-01-23 Water leakage sensing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56007833A JPS57122335A (en) 1981-01-23 1981-01-23 Water leakage sensing device

Publications (2)

Publication Number Publication Date
JPS57122335A true JPS57122335A (en) 1982-07-30
JPH0353570B2 JPH0353570B2 (enrdf_load_stackoverflow) 1991-08-15

Family

ID=11676598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56007833A Granted JPS57122335A (en) 1981-01-23 1981-01-23 Water leakage sensing device

Country Status (1)

Country Link
JP (1) JPS57122335A (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50159786A (enrdf_load_stackoverflow) * 1974-06-14 1975-12-24
JPS5137683A (ja) * 1974-09-27 1976-03-30 Hitachi Ltd Jokiriikukenshutsuhoshiki
JPS5343637A (en) * 1976-09-30 1978-04-19 Mecanique Soc Ind De Method of applying reflection coating onto metal surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50159786A (enrdf_load_stackoverflow) * 1974-06-14 1975-12-24
JPS5137683A (ja) * 1974-09-27 1976-03-30 Hitachi Ltd Jokiriikukenshutsuhoshiki
JPS5343637A (en) * 1976-09-30 1978-04-19 Mecanique Soc Ind De Method of applying reflection coating onto metal surface

Also Published As

Publication number Publication date
JPH0353570B2 (enrdf_load_stackoverflow) 1991-08-15

Similar Documents

Publication Publication Date Title
JPS57122335A (en) Water leakage sensing device
JPS53140959A (en) Counter circuit
JPS56137580A (en) Semiconductor storage device
JPS5313477A (en) Operating time measuring system for mechanism
JPS5432387A (en) Analyzing apparatus
JPS5381165A (en) Electronic apparatus with alarm function
JPS5245358A (en) Device for determining normal values of plant data
JPS5411648A (en) Semiconductor memory unit
JPS5412528A (en) Data processor
JPS56111199A (en) Periodical scanning control system in memory device
JPS54946A (en) Operation speed test circuit for logic element or logic circuit
JPS57117003A (en) Measuring method of timing pulse
JPS55138680A (en) Event interval measuring apparatus
JPS647752A (en) Switch monitoring device
JPS5422137A (en) Bus line chekcing device
JPS5399829A (en) Integrated memory
JPS5588431A (en) Pulse signal measuring device
JPS55159183A (en) Digital control unit
JPS5534302A (en) Memory device diagnostic system
JPS56111200A (en) Control system of alternate memory
JPS52130270A (en) Pulse width compensation circuit
JPS5694294A (en) Program timer device
JPS5556231A (en) Pen-touch type input device
JPS55101076A (en) Measuring method of electronic watch
JPS55110921A (en) Measured weight value display method for electronic system weight measuring apparatus