JPS5485076A - Differential pressure measuring apparatus - Google Patents

Differential pressure measuring apparatus

Info

Publication number
JPS5485076A
JPS5485076A JP15240177A JP15240177A JPS5485076A JP S5485076 A JPS5485076 A JP S5485076A JP 15240177 A JP15240177 A JP 15240177A JP 15240177 A JP15240177 A JP 15240177A JP S5485076 A JPS5485076 A JP S5485076A
Authority
JP
Japan
Prior art keywords
outside diameter
pressure receiving
diaphragms
auxiliary
diaphragm
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
JP15240177A
Other languages
Japanese (ja)
Other versions
JPS5815049B2 (en
Inventor
Takeshi Yasuhara
Makoto Nishimura
Mitsuru Tamai
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP52152401A priority Critical patent/JPS5815049B2/en
Priority to DE19782854262 priority patent/DE2854262A1/en
Priority to IT30828/78A priority patent/IT1100632B/en
Priority to FR7835225A priority patent/FR2412835A1/en
Publication of JPS5485076A publication Critical patent/JPS5485076A/en
Publication of JPS5815049B2 publication Critical patent/JPS5815049B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE: To obtain the protecting function of over differential pressures by making the outside diameter size of an auxiliary diaphragm larger than the outside diameter size of first, second pressure receiving diaphragms.
CONSTITUTION: The outside diameter of an auxiliary diaphragm 51 which is inserted between first, second casings 43, 44 to hermetically form first, second auxiliary chambers 52, 53 is formed larger than the outside diameter of first, second pressure receiving diaphragms 13, 14 forming first, second pressure receiving chambers 15, 16. Then, when the differential pressure acting upon the first, second pressure receiving diaphragms 13, 14 exceeds a specified measurement range, the auxiliary diaphragm 51 displaces independently from the measuring diaphragm 31 and the capacities of the first, second diaphragms 13, 14 are absorbed by the slight displacement thereof. Hence, the protection function of over differential pressures is surely performed and the selection of modulus of rigidity of the auxiliary diaphragm 51 is made easy.
COPYRIGHT: (C)1979,JPO&Japio
JP52152401A 1977-12-20 1977-12-20 Differential pressure measuring device Expired JPS5815049B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP52152401A JPS5815049B2 (en) 1977-12-20 1977-12-20 Differential pressure measuring device
DE19782854262 DE2854262A1 (en) 1977-12-20 1978-12-13 DIFFERENTIAL PRESSURE MEASURING DEVICE
IT30828/78A IT1100632B (en) 1977-12-20 1978-12-14 DEVICE FOR MEASURING PRESSURE DIFFERENCES
FR7835225A FR2412835A1 (en) 1977-12-20 1978-12-14 DIFFERENTIAL PRESSURE MEASUREMENT DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52152401A JPS5815049B2 (en) 1977-12-20 1977-12-20 Differential pressure measuring device

Publications (2)

Publication Number Publication Date
JPS5485076A true JPS5485076A (en) 1979-07-06
JPS5815049B2 JPS5815049B2 (en) 1983-03-23

Family

ID=15539697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52152401A Expired JPS5815049B2 (en) 1977-12-20 1977-12-20 Differential pressure measuring device

Country Status (4)

Country Link
JP (1) JPS5815049B2 (en)
DE (1) DE2854262A1 (en)
FR (1) FR2412835A1 (en)
IT (1) IT1100632B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943328A (en) * 1982-09-06 1984-03-10 Toshiba Corp Differential pressure transmitter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4206675C2 (en) * 1992-02-28 1995-04-27 Siemens Ag Method for manufacturing pressure difference sensors
DE29711759U1 (en) * 1997-07-04 1998-08-06 Siemens AG, 80333 München Differential pressure transmitter
DE10101180A1 (en) * 2001-01-12 2002-09-12 Endress & Hauser Gmbh & Co Kg Differential pressure sensor and method for differential pressure measurement
DE102006057828A1 (en) * 2006-12-06 2008-06-12 Endress + Hauser Gmbh + Co. Kg Differential manometric sensor for recording differential pressure and for industrial measuring technique, has base body and recess is divided into two pressure measuring chamber, which are connected with overload chambers
DE102006057829A1 (en) * 2006-12-06 2008-06-12 Endress + Hauser Gmbh + Co. Kg Differential manometric sensor for recording differential pressure and for industrial measuring technique, has base body and recess is divided into two pressure measuring chamber, which are connected with overload chambers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3618390A (en) * 1969-10-27 1971-11-09 Rosemount Eng Co Ltd Differential pressure transducer
DE2360276A1 (en) * 1973-12-04 1975-06-12 Eckardt Ag J Differential pressure converter - has elastic spring membrane between measuring chambers and O-ring seals
JPS5214470A (en) * 1975-07-24 1977-02-03 Fuji Electric Co Ltd Pressure measuring equipment
JPS5233575A (en) * 1975-09-09 1977-03-14 Fuji Electric Co Ltd Differential pressure measuring device
US4073191A (en) * 1976-12-02 1978-02-14 Yokogawa Electric Works, Ltd. Differential pressure transducer
DE2657933C3 (en) * 1976-12-21 1984-01-05 Siemens AG, 1000 Berlin und 8000 München Differential pressure transmitter with overload protection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5943328A (en) * 1982-09-06 1984-03-10 Toshiba Corp Differential pressure transmitter

Also Published As

Publication number Publication date
IT1100632B (en) 1985-09-28
IT7830828A0 (en) 1978-12-14
FR2412835A1 (en) 1979-07-20
JPS5815049B2 (en) 1983-03-23
FR2412835B1 (en) 1982-04-23
DE2854262A1 (en) 1979-06-21

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