JPS55128114A - Water pressure detector of depth gage - Google Patents

Water pressure detector of depth gage

Info

Publication number
JPS55128114A
JPS55128114A JP3668679A JP3668679A JPS55128114A JP S55128114 A JPS55128114 A JP S55128114A JP 3668679 A JP3668679 A JP 3668679A JP 3668679 A JP3668679 A JP 3668679A JP S55128114 A JPS55128114 A JP S55128114A
Authority
JP
Japan
Prior art keywords
pressure
case
diaphragm
displacement
water 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
JP3668679A
Other languages
Japanese (ja)
Inventor
Toshio Omori
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP3668679A priority Critical patent/JPS55128114A/en
Publication of JPS55128114A publication Critical patent/JPS55128114A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/149—Housings of immersion sensor, e.g. where the sensor is immersed in the measuring medium or for in vivo measurements, e.g. by using catheter tips
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/008—Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0046—Fluidic connecting means using isolation membranes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Optics & Photonics (AREA)

Abstract

PURPOSE: To indicate the water depth digitally in an electronic device by blocking one end of an opening part to form a tightly closed space and detecting the fluctuation of pressure of a liquid or the like within the tightly closed space generated by the displacement of the diaphragm by receiving the water pressure from the outside using a pressure detecting element.
CONSTITUTION: A detector case 11 is mounted on the opening part of a watch case 1 through an air-tightening packing 12, and a protective cover 13 provided with a water permeating through hole 14 connecting water pressure is fitted to the inner surface of the case 11. To the inner surface of the case 11 there is secured a diaphragm 15, and a tightly sealed space 16 is formed. At the lower surface of the case 11 there is secured a ceramic base plate 17 to form the tightly sealed space 16, and the base plate 17 is provided with a pressure detecting element 19 and a vacuum space 20. The external pressure fluctuation is transmitted to the diaphragm 15 via the through hole 14, and the pressure of a noncompressive fluid 16 varies by the displacement of the diaphragm 15 to displace the element 19, and an electrical signal proportional to the quantity of the displacement thereof is derived from a terminal 18, and digitally indicated.
COPYRIGHT: (C)1980,JPO&Japio
JP3668679A 1979-03-28 1979-03-28 Water pressure detector of depth gage Pending JPS55128114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3668679A JPS55128114A (en) 1979-03-28 1979-03-28 Water pressure detector of depth gage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3668679A JPS55128114A (en) 1979-03-28 1979-03-28 Water pressure detector of depth gage

Publications (1)

Publication Number Publication Date
JPS55128114A true JPS55128114A (en) 1980-10-03

Family

ID=12476709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3668679A Pending JPS55128114A (en) 1979-03-28 1979-03-28 Water pressure detector of depth gage

Country Status (1)

Country Link
JP (1) JPS55128114A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000039533A1 (en) * 1998-12-23 2000-07-06 Flytec Ag Water-tight measurement device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843380A (en) * 1971-10-01 1973-06-22
US3857283A (en) * 1973-12-12 1974-12-31 Us Navy Depthometer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843380A (en) * 1971-10-01 1973-06-22
US3857283A (en) * 1973-12-12 1974-12-31 Us Navy Depthometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000039533A1 (en) * 1998-12-23 2000-07-06 Flytec Ag Water-tight measurement device

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