GB1327817A - Valve condition indicating apparatus - Google Patents

Valve condition indicating apparatus

Info

Publication number
GB1327817A
GB1327817A GB1950670A GB1327817DA GB1327817A GB 1327817 A GB1327817 A GB 1327817A GB 1950670 A GB1950670 A GB 1950670A GB 1327817D A GB1327817D A GB 1327817DA GB 1327817 A GB1327817 A GB 1327817A
Authority
GB
United Kingdom
Prior art keywords
indicator
resistor
april
spindle
motor
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.)
Expired
Application number
GB1950670A
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.)
SOCTT ELECTRONIC ENG Ltd JAMES
Original Assignee
SOCTT ELECTRONIC ENG Ltd JAMES
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 SOCTT ELECTRONIC ENG Ltd JAMES filed Critical SOCTT ELECTRONIC ENG Ltd JAMES
Publication of GB1327817A publication Critical patent/GB1327817A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1472—Control of position or direction using feedback using an analogue comparing device with potentiometer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

1327817 Mimic diagrams for pipe systems JAMES SCOTT (ELECTRONIC ENG) Ltd 21 April 1971 [23 April 1970] 19506/70 Heading G1N In a mimic diagram including indicators representing the condition of corresponding valves in a pipe system, each indicator and its corresponding valve are associated with variable resistors inter-connected in a self-balancing bridge network. As shown, Fig.3, the valve carries a resistor 20 on its spindle, and the indicator carries a resistor 14 on its spindle, the resistors being connected in a bridge network whose output is amplified at 21 to cause transistor VT1 or VT2 to conduct and energize a motor 7 to drive the indicator and resistor 14 in the appropriate direction until balance is restored. The electrical components form a printed circuit 19 which, with motor 7, are assembled with the indicator, Fig.2 (not shown), the indicating element comprising a coloured bar visible through a glass plate.
GB1950670A 1970-04-23 1970-04-23 Valve condition indicating apparatus Expired GB1327817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1950670 1970-04-23

Publications (1)

Publication Number Publication Date
GB1327817A true GB1327817A (en) 1973-08-22

Family

ID=10130504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1950670A Expired GB1327817A (en) 1970-04-23 1970-04-23 Valve condition indicating apparatus

Country Status (8)

Country Link
JP (1) JPS466885A (en)
DE (1) DE2119494A1 (en)
DK (1) DK137205C (en)
ES (1) ES390376A1 (en)
FR (1) FR2099737A5 (en)
GB (1) GB1327817A (en)
NL (1) NL7105501A (en)
NO (1) NO139303C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531332Y2 (en) * 1972-12-26 1980-07-25
IE41381B1 (en) * 1974-08-19 1979-12-19 Pfizer Process for the preparation on n,n-dialkylxylylenediamines
JPS5674698A (en) * 1979-11-22 1981-06-20 Tokyo Shibaura Electric Co Pressure release satety device of nuclear reactor

Also Published As

Publication number Publication date
DK137205C (en) 1978-07-03
NL7105501A (en) 1971-10-26
DK137205B (en) 1978-01-30
NO139303C (en) 1979-02-14
DE2119494A1 (en) 1971-11-11
FR2099737A5 (en) 1972-03-17
ES390376A1 (en) 1973-06-01
NO139303B (en) 1978-10-30
JPS466885A (en) 1971-12-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee