JPS54145878A - Process control system automatic switching device - Google Patents

Process control system automatic switching device

Info

Publication number
JPS54145878A
JPS54145878A JP5417778A JP5417778A JPS54145878A JP S54145878 A JPS54145878 A JP S54145878A JP 5417778 A JP5417778 A JP 5417778A JP 5417778 A JP5417778 A JP 5417778A JP S54145878 A JPS54145878 A JP S54145878A
Authority
JP
Japan
Prior art keywords
flow
signal
value
valve
converter
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
JP5417778A
Other languages
Japanese (ja)
Other versions
JPS6042961B2 (en
Inventor
Kazushige Kobayashi
Yukimi Kobayashi
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.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP5417778A priority Critical patent/JPS6042961B2/en
Publication of JPS54145878A publication Critical patent/JPS54145878A/en
Publication of JPS6042961B2 publication Critical patent/JPS6042961B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Flow Control (AREA)

Abstract

PURPOSE: To change over a cascade system to single system by means of a hand press, by changing over an actual flow detecting value and an output of the converter to a flow feedback signal corresponding to the amount of the detecting flows after having found a flow property of a check valve by means of a function converter.
CONSTITUTION: A process amount S1 detected by a detector 2 is controlled by regulating a flow F. A primary regulator XC finds a flow set valve S2 from the process amount S1 and a set value S0, and the result is fed to a secondary regulator FC. The secondary regulator FC finds a valve operating signal S5 from the set value S2 and a flow detecting value SH of a high signal selector 12, and outputs the result to a valve 6. A flow signal SM from a flow detector 3 and a flow signal SV found at a control valve opening degree converter 10 are supplied to the high signal selector 12. The flow signal SM is automatically controlled by the flow signal SV since the signal SM is set at lower than an actual flow signal value in the case of the flow signal SM being lower than a given flow.
COPYRIGHT: (C)1979,JPO&Japio
JP5417778A 1978-05-06 1978-05-06 Process control method automatic switching device Expired JPS6042961B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5417778A JPS6042961B2 (en) 1978-05-06 1978-05-06 Process control method automatic switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5417778A JPS6042961B2 (en) 1978-05-06 1978-05-06 Process control method automatic switching device

Publications (2)

Publication Number Publication Date
JPS54145878A true JPS54145878A (en) 1979-11-14
JPS6042961B2 JPS6042961B2 (en) 1985-09-26

Family

ID=12963253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5417778A Expired JPS6042961B2 (en) 1978-05-06 1978-05-06 Process control method automatic switching device

Country Status (1)

Country Link
JP (1) JPS6042961B2 (en)

Also Published As

Publication number Publication date
JPS6042961B2 (en) 1985-09-26

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