FR2413708A1 - Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp. - Google Patents

Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp.

Info

Publication number
FR2413708A1
FR2413708A1 FR7739878A FR7739878A FR2413708A1 FR 2413708 A1 FR2413708 A1 FR 2413708A1 FR 7739878 A FR7739878 A FR 7739878A FR 7739878 A FR7739878 A FR 7739878A FR 2413708 A1 FR2413708 A1 FR 2413708A1
Authority
FR
France
Prior art keywords
temp
heat exchanger
fluid
tfc
temperature
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
FR7739878A
Other languages
French (fr)
Other versions
FR2413708B1 (en
Inventor
Jean-Paul Gatto
Georges Andre Durand
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7739878A priority Critical patent/FR2413708A1/en
Publication of FR2413708A1 publication Critical patent/FR2413708A1/en
Application granted granted Critical
Publication of FR2413708B1 publication Critical patent/FR2413708B1/fr
Granted 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
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller

Abstract

The system is designed to regulate the temp. of a body to a set value Tc. The body may be heated, cooled by a heating or refrigerating fluid respectively via a heat exchanger receiving the fluid. The fluid is provided from a source which has a regulating system for adjusting the temperature of the fluid. The temperature TF of the regulating fluid is measured at a point in front of the heat exchanger. The ambient temperature Ta of the medium surrounding the heat exchanger is also measured. The magnitude TFc given by the following relationship is calculated. TFc=(Tc-Ta)/K+Ta where K is a constant determined by a sample of the relation TF=f(O), O is the temperature of the body and f(O):(O-Ta)/K+Ta. Temperatures TFc and TF are compared. The regulating system is controlled so that the quantity TFc-TF is maintained at a practically zero value.
FR7739878A 1977-12-30 1977-12-30 Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp. Granted FR2413708A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739878A FR2413708A1 (en) 1977-12-30 1977-12-30 Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739878A FR2413708A1 (en) 1977-12-30 1977-12-30 Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp.

Publications (2)

Publication Number Publication Date
FR2413708A1 true FR2413708A1 (en) 1979-07-27
FR2413708B1 FR2413708B1 (en) 1981-08-21

Family

ID=9199586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739878A Granted FR2413708A1 (en) 1977-12-30 1977-12-30 Temp. regulator associated with heat exchanger - obtains error signal for control by comparing measured temp. with setting temp.

Country Status (1)

Country Link
FR (1) FR2413708A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236069A2 (en) * 1986-02-25 1987-09-09 The Perkin-Elmer Corporation Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
US5038852A (en) * 1986-02-25 1991-08-13 Cetus Corporation Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
US5333675A (en) * 1986-02-25 1994-08-02 Hoffmann-La Roche Inc. Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
US5475610A (en) * 1990-11-29 1995-12-12 The Perkin-Elmer Corporation Thermal cycler for automatic performance of the polymerase chain reaction with close temperature control
US5656493A (en) * 1985-03-28 1997-08-12 The Perkin-Elmer Corporation System for automated performance of the polymerase chain reaction

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656493A (en) * 1985-03-28 1997-08-12 The Perkin-Elmer Corporation System for automated performance of the polymerase chain reaction
EP0236069A2 (en) * 1986-02-25 1987-09-09 The Perkin-Elmer Corporation Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
EP0236069A3 (en) * 1986-02-25 1990-10-03 The Perkin-Elmer Corporation Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
US5038852A (en) * 1986-02-25 1991-08-13 Cetus Corporation Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
US5333675A (en) * 1986-02-25 1994-08-02 Hoffmann-La Roche Inc. Apparatus and method for performing automated amplification of nucleic acid sequences and assays using heating and cooling steps
EP0776967A3 (en) * 1986-02-25 1997-09-10 Perkin Elmer Corp Heat exchanger for use in a temperature cycling instrument
US5475610A (en) * 1990-11-29 1995-12-12 The Perkin-Elmer Corporation Thermal cycler for automatic performance of the polymerase chain reaction with close temperature control
US5602756A (en) * 1990-11-29 1997-02-11 The Perkin-Elmer Corporation Thermal cycler for automatic performance of the polymerase chain reaction with close temperature control
US6015534A (en) * 1990-11-29 2000-01-18 The Perkin-Elmer Corporation PCR sample tube

Also Published As

Publication number Publication date
FR2413708B1 (en) 1981-08-21

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Legal Events

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