JPS5617406A - Gaseous pressure controller - Google Patents

Gaseous pressure controller

Info

Publication number
JPS5617406A
JPS5617406A JP9312379A JP9312379A JPS5617406A JP S5617406 A JPS5617406 A JP S5617406A JP 9312379 A JP9312379 A JP 9312379A JP 9312379 A JP9312379 A JP 9312379A JP S5617406 A JPS5617406 A JP S5617406A
Authority
JP
Japan
Prior art keywords
pressure
range
gaseous
control valve
time
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
JP9312379A
Other languages
Japanese (ja)
Other versions
JPS639252B2 (en
Inventor
Tetsuo Yada
Fumio Kimura
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.)
Tokico Ltd
Original Assignee
Tokico 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 Tokico Ltd filed Critical Tokico Ltd
Priority to JP9312379A priority Critical patent/JPS5617406A/en
Publication of JPS5617406A publication Critical patent/JPS5617406A/en
Publication of JPS639252B2 publication Critical patent/JPS639252B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Pipeline Systems (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

PURPOSE: To exercise accurate control over gaseous pressure by adjusting a pressure control valve through a gaseous pressure controller on the basis of a difference in time when a difference between set pressure and measured pressure exceeds the 1st range and by stopping time adjustment within the 2nd range narrower than the 1st range.
CONSTITUTION: Pressure data 1 that correspond to the opening degree of a pressure control valve are compared by comparators 34 and 35 to addition value 36 and subtraction value 37 between set pressure data per hour read out of memory unit 29 and the 1st range set value 47; when the both are negative or positive, a time- difference signal is output to gaseous pressure control valve adjusting circuit 30, but when either one is positive and the other is negative, the time-difference signal is not sent out and outputs to addition 36 and subtraction 37 are changed over to the 2nd range set value 48, thereby repeating the same operation with the 1st range set value 47. Therefore, the hunting of control operation based upon a temperature change, etc., can be prevented and the adjustment precision of the gaseous-pressure control valve can be improved, exercising accurate control over gaseous pressure.
COPYRIGHT: (C)1981,JPO&Japio
JP9312379A 1979-07-20 1979-07-20 Gaseous pressure controller Granted JPS5617406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9312379A JPS5617406A (en) 1979-07-20 1979-07-20 Gaseous pressure controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9312379A JPS5617406A (en) 1979-07-20 1979-07-20 Gaseous pressure controller

Publications (2)

Publication Number Publication Date
JPS5617406A true JPS5617406A (en) 1981-02-19
JPS639252B2 JPS639252B2 (en) 1988-02-26

Family

ID=14073738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9312379A Granted JPS5617406A (en) 1979-07-20 1979-07-20 Gaseous pressure controller

Country Status (1)

Country Link
JP (1) JPS5617406A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833723A (en) * 1981-08-20 1983-02-28 Fuji Denki Keiso Kk Controlling system of pressure at terminal to constant value
JPS59123910A (en) * 1982-12-29 1984-07-17 Daikin Ind Ltd Pressure controlling mechanism
JPS60169474U (en) * 1984-04-20 1985-11-09 トキコ株式会社 pressure control device
JPS6353976U (en) * 1986-09-29 1988-04-11
JPS6431410U (en) * 1987-08-13 1989-02-27

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50148901A (en) * 1974-05-21 1975-11-28
JPS52122792A (en) * 1976-04-08 1977-10-15 Ishikawajima Harima Heavy Ind Co Ltd Fluid pressure control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50148901A (en) * 1974-05-21 1975-11-28
JPS52122792A (en) * 1976-04-08 1977-10-15 Ishikawajima Harima Heavy Ind Co Ltd Fluid pressure control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833723A (en) * 1981-08-20 1983-02-28 Fuji Denki Keiso Kk Controlling system of pressure at terminal to constant value
JPS59123910A (en) * 1982-12-29 1984-07-17 Daikin Ind Ltd Pressure controlling mechanism
JPS60169474U (en) * 1984-04-20 1985-11-09 トキコ株式会社 pressure control device
JPS6353976U (en) * 1986-09-29 1988-04-11
JPH0517686Y2 (en) * 1986-09-29 1993-05-12
JPS6431410U (en) * 1987-08-13 1989-02-27
JPH0454500Y2 (en) * 1987-08-13 1992-12-21

Also Published As

Publication number Publication date
JPS639252B2 (en) 1988-02-26

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