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GB861518A - Apparatus for use in measuring the residual hardness of water - Google Patents

Apparatus for use in measuring the residual hardness of water

Info

Publication number
GB861518A
GB861518A GB146959A GB146959A GB861518A GB 861518 A GB861518 A GB 861518A GB 146959 A GB146959 A GB 146959A GB 146959 A GB146959 A GB 146959A GB 861518 A GB861518 A GB 861518A
Authority
GB
United Kingdom
Prior art keywords
measuring
water
hardness
residual hardness
cell
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
GB146959A
Inventor
Arnost Anscherlik
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.)
ENERGETICKY USTAV
Original Assignee
ENERGETICKY USTAV
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 ENERGETICKY USTAV filed Critical ENERGETICKY USTAV
Publication of GB861518A publication Critical patent/GB861518A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

In a system for the continuous or occasional supervision of the hardness of e.g. boiler feed water, an indicator such as eriochrome black and a buffer solution containing ammonia and ammonium chloride are supplied for predetermined periods to a reaction vessel 3 from which they pass into a transparent cell between a light source, filter 11 and selenium cell 13. Photo-electric variations due to colour changes between wine red and blue are recorded by a recording milli-voltmeter.
GB146959A 1959-01-23 1959-01-15 Apparatus for use in measuring the residual hardness of water Expired GB861518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6866859A CH370938A (en) 1959-01-23 1959-01-23 Device for measuring the hardness of water

Publications (1)

Publication Number Publication Date
GB861518A true GB861518A (en) 1961-02-22

Family

ID=4528919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB146959A Expired GB861518A (en) 1959-01-23 1959-01-15 Apparatus for use in measuring the residual hardness of water

Country Status (2)

Country Link
CH (1) CH370938A (en)
GB (1) GB861518A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169834A (en) * 1961-04-06 1965-02-16 Heyl Chem Fab Kg Geb Instrument for testing a liquid
ES2259917A1 (en) * 2005-03-23 2006-10-16 Pridesa Proyectos Y Servicios, S.A.U. Water hardness measurement device for demineralization system for desalination plants has microprocessor for determining amount of calcium in water according to reaction of water with applied agent
CN114965452A (en) * 2022-05-23 2022-08-30 浙江大学 Machine vision detection method and device for boiler feed water hardness

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169834A (en) * 1961-04-06 1965-02-16 Heyl Chem Fab Kg Geb Instrument for testing a liquid
ES2259917A1 (en) * 2005-03-23 2006-10-16 Pridesa Proyectos Y Servicios, S.A.U. Water hardness measurement device for demineralization system for desalination plants has microprocessor for determining amount of calcium in water according to reaction of water with applied agent
CN114965452A (en) * 2022-05-23 2022-08-30 浙江大学 Machine vision detection method and device for boiler feed water hardness

Also Published As

Publication number Publication date
CH370938A (en) 1963-07-31

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