FR2243729A1 - Concentration control system - for a chemical reagent e.g. chlorine supplied to a liquid e.g. a swimming bath - Google Patents

Concentration control system - for a chemical reagent e.g. chlorine supplied to a liquid e.g. a swimming bath

Info

Publication number
FR2243729A1
FR2243729A1 FR7431483A FR7431483A FR2243729A1 FR 2243729 A1 FR2243729 A1 FR 2243729A1 FR 7431483 A FR7431483 A FR 7431483A FR 7431483 A FR7431483 A FR 7431483A FR 2243729 A1 FR2243729 A1 FR 2243729A1
Authority
FR
France
Prior art keywords
chamber
liquid
control system
chemical reagent
concentration control
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
FR7431483A
Other languages
French (fr)
Other versions
FR2243729B1 (en
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.)
THOMSON ROBERT GB
Original Assignee
THOMSON ROBERT GB
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 THOMSON ROBERT GB filed Critical THOMSON ROBERT GB
Publication of FR2243729A1 publication Critical patent/FR2243729A1/en
Application granted granted Critical
Publication of FR2243729B1 publication Critical patent/FR2243729B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

Appts. for controlling the concn. of a chemical prod. in a liq. e.g. chlorine in a swimming bath, comprising (a) a device for introducing a liquid sample into a sample chamber with transparent walls, and a device for maintaining the quantity of the liq. in the chamber constant (b) a device for the periodic introduction of a specific quantity of indicator into the sample chamber and for mixing this with the test liquid in the chamber. (c) a stabilised light soruce on one side of the chamber and a photo-electric detector on the opposite side, and (d) a comparator for comparing a value corresponding to the light detected by the photo-electric device with a present value, the output from which is connected to an excitation device.
FR7431483A 1973-09-18 1974-09-18 Concentration control system - for a chemical reagent e.g. chlorine supplied to a liquid e.g. a swimming bath Granted FR2243729A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4377973 1973-09-18
GB439874 1974-01-30

Publications (2)

Publication Number Publication Date
FR2243729A1 true FR2243729A1 (en) 1975-04-11
FR2243729B1 FR2243729B1 (en) 1976-10-22

Family

ID=26239093

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7431483A Granted FR2243729A1 (en) 1973-09-18 1974-09-18 Concentration control system - for a chemical reagent e.g. chlorine supplied to a liquid e.g. a swimming bath

Country Status (6)

Country Link
JP (1) JPS5081962A (en)
AU (1) AU7334074A (en)
DE (1) DE2444199A1 (en)
DK (1) DK489674A (en)
FR (1) FR2243729A1 (en)
IT (1) IT1030057B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014623A1 (en) * 1989-05-24 1990-11-29 Henkel Kommanditgesellschaft Auf Aktien Device for dispensing disinfectants

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514958A1 (en) * 1985-04-25 1986-10-30 Otto Tuchenhagen GmbH & Co KG, 2059 Büchen Process for generating defined dispersed systems, and arrangement for carrying it out
DE29715378U1 (en) 1997-08-27 1998-02-12 Dinotec GmbH, 63477 Maintal Measuring, control and dosing station
US7292914B2 (en) 2001-07-10 2007-11-06 Ecolab Inc. Remote access to chemical dispense system
US6763860B2 (en) 2001-07-10 2004-07-20 Ecolab, Inc. Flow-based chemical dispense system
US7803321B2 (en) 2005-03-18 2010-09-28 Ecolab Inc. Formulating chemical solutions based on volumetric and weight based control measurements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014623A1 (en) * 1989-05-24 1990-11-29 Henkel Kommanditgesellschaft Auf Aktien Device for dispensing disinfectants

Also Published As

Publication number Publication date
JPS5081962A (en) 1975-07-03
DK489674A (en) 1975-06-02
FR2243729B1 (en) 1976-10-22
AU7334074A (en) 1976-03-18
DE2444199A1 (en) 1975-03-20
IT1030057B (en) 1979-03-30

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Legal Events

Date Code Title Description
ST Notification of lapse