JPS5561817A - Control system for liquid level - Google Patents

Control system for liquid level

Info

Publication number
JPS5561817A
JPS5561817A JP13427178A JP13427178A JPS5561817A JP S5561817 A JPS5561817 A JP S5561817A JP 13427178 A JP13427178 A JP 13427178A JP 13427178 A JP13427178 A JP 13427178A JP S5561817 A JPS5561817 A JP S5561817A
Authority
JP
Japan
Prior art keywords
opening
vessel
liquid
liquid level
sectional area
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
JP13427178A
Other languages
Japanese (ja)
Other versions
JPS5919372B2 (en
Inventor
Tsuyoshi Tsuda
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP13427178A priority Critical patent/JPS5919372B2/en
Publication of JPS5561817A publication Critical patent/JPS5561817A/en
Publication of JPS5919372B2 publication Critical patent/JPS5919372B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Flow Control (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE: To control so that the liquid level of the second vessel is constant, in receiving the liquid from the vessel having the opening at the bottom with the second vessel with similar construction and in supplying the liquid to supply through this opening.
CONSTITUTION: Liquid is fed in natural drop from the opening with variable sectional area from the first vessel V1 to the second vessel V2, and it is fed to demand from the opening of V2. To keep constant the supply flow, by adjusting the area of opening, the control of feed-forward can be made. On the other hand, since the sectional area S2 of V2 is sufficiently greater in comparison with that of the opening of V1, the response time constant at liquid level h2 with the opening sectional area varied is greater and the response idle time is small for W1 when the opening area is changed. So-called ON-OFF feedback control is suitable and the both controls are applied.
COPYRIGHT: (C)1980,JPO&Japio
JP13427178A 1978-10-31 1978-10-31 Liquid level control method Expired JPS5919372B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13427178A JPS5919372B2 (en) 1978-10-31 1978-10-31 Liquid level control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13427178A JPS5919372B2 (en) 1978-10-31 1978-10-31 Liquid level control method

Publications (2)

Publication Number Publication Date
JPS5561817A true JPS5561817A (en) 1980-05-09
JPS5919372B2 JPS5919372B2 (en) 1984-05-04

Family

ID=15124379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13427178A Expired JPS5919372B2 (en) 1978-10-31 1978-10-31 Liquid level control method

Country Status (1)

Country Link
JP (1) JPS5919372B2 (en)

Also Published As

Publication number Publication date
JPS5919372B2 (en) 1984-05-04

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