GB990571A - Improvements in or relating to a temperature control system, particularly for fluid-filled baths - Google Patents

Improvements in or relating to a temperature control system, particularly for fluid-filled baths

Info

Publication number
GB990571A
GB990571A GB12377/61A GB1237761A GB990571A GB 990571 A GB990571 A GB 990571A GB 12377/61 A GB12377/61 A GB 12377/61A GB 1237761 A GB1237761 A GB 1237761A GB 990571 A GB990571 A GB 990571A
Authority
GB
United Kingdom
Prior art keywords
temperature
fluid
bridge
relating
control system
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
GB12377/61A
Inventor
Walter Henry Richard Sanders
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.)
Townson & Mercer Ltd
Original Assignee
Townson & Mercer 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 Townson & Mercer Ltd filed Critical Townson & Mercer Ltd
Priority to GB12377/61A priority Critical patent/GB990571A/en
Publication of GB990571A publication Critical patent/GB990571A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/1928—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperature of one space

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

990,571. Electrical correspondence controls. TOWNSON & MERCER Ltd. July 2,1962 [April 6,1961],No. 12377/61. Heading G3R. An apparatus for controlling the temperature of a fluid comprises a bridge circuit in which two elements are thermosensitive resistors 1,2 so connected that their effect on bridge balance with a change in temperature is additive. The resistances 1, 2, may be of platinum or other pure metal wire, or high negative temperature coefficient semi-conductors. The bridge is adjusted by means of ganged potentiometers 5,6, so as to be approximately balanced at a desired fluid temperature and fine balance at this temperature, which may be indicated by a fluid immersed thermometer, is achieved by coarse and fine potentiometers 3,4 respectively. The ganged potentiometer control may be calibrated in degrees of temperature. The bridge output is amplified and used to switch a heater on and off.
GB12377/61A 1961-04-06 1961-04-06 Improvements in or relating to a temperature control system, particularly for fluid-filled baths Expired GB990571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB12377/61A GB990571A (en) 1961-04-06 1961-04-06 Improvements in or relating to a temperature control system, particularly for fluid-filled baths

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12377/61A GB990571A (en) 1961-04-06 1961-04-06 Improvements in or relating to a temperature control system, particularly for fluid-filled baths

Publications (1)

Publication Number Publication Date
GB990571A true GB990571A (en) 1965-04-28

Family

ID=10003422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12377/61A Expired GB990571A (en) 1961-04-06 1961-04-06 Improvements in or relating to a temperature control system, particularly for fluid-filled baths

Country Status (1)

Country Link
GB (1) GB990571A (en)

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