GB1433962A - Formation of adherent precipitates on surfaces immersed in liquids - Google Patents

Formation of adherent precipitates on surfaces immersed in liquids

Info

Publication number
GB1433962A
GB1433962A GB725074A GB725074A GB1433962A GB 1433962 A GB1433962 A GB 1433962A GB 725074 A GB725074 A GB 725074A GB 725074 A GB725074 A GB 725074A GB 1433962 A GB1433962 A GB 1433962A
Authority
GB
United Kingdom
Prior art keywords
scale
liquid
test surface
electrode
formation
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
GB725074A
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.)
Magna Corp
Original Assignee
Magna Corp
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 Magna Corp filed Critical Magna Corp
Publication of GB1433962A publication Critical patent/GB1433962A/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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2499—Mixture condition maintaining or sensing

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

1433962 Electro-physical measurement MAGNA CORP 18 Feb 1974 [26 Feb 1973] 7250/74 Heading G1N The formation of scale on an electrically conductive surface immersed in a liquid is determined by measuring its contact resistance with an engaging electrode. The scale may be e.g. boiler scale or wax deposit in a pipe-line, and a heating or cooling coil (77) may be provided Fig. 3 (not shown). The electrode may be a roller engaging a rotating cylindrical test surface Figs. 2, 3 (not shown), or may periodically retract and later re-engage the test surface Fig. 1 (not shown). The liquid may be an ionic conductor in which a higher contact resistance is detectable (due to the "electro-chemical overvoltage") with the onset of scale, or an insulating liquid (oil) in which the circuit is broken when scale separates the contacts. The choice of electrode material according to the ionic liquid can increase sensitivity, and it may be chosen to provide "battery action" so that the measuring circuit is self-powered. The test surface may be cleaned by a scraper or periodic polarity reversal.
GB725074A 1973-02-26 1974-02-18 Formation of adherent precipitates on surfaces immersed in liquids Expired GB1433962A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00335676A US3848187A (en) 1973-02-26 1973-02-26 Method of detecting the onset of formation of adherent precipitates on surfaces immersed in liquids, and of controlling the formation of such precipitates

Publications (1)

Publication Number Publication Date
GB1433962A true GB1433962A (en) 1976-04-28

Family

ID=23312789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB725074A Expired GB1433962A (en) 1973-02-26 1974-02-18 Formation of adherent precipitates on surfaces immersed in liquids

Country Status (6)

Country Link
US (1) US3848187A (en)
JP (1) JPS5025261A (en)
DE (1) DE2407081C3 (en)
FR (1) FR2219413B1 (en)
GB (1) GB1433962A (en)
IT (1) IT1015819B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH598601A5 (en) * 1975-07-10 1978-05-12 Richard Hunziker
JPS52101064A (en) * 1976-02-20 1977-08-24 Futaba Denshi Kogyo Kk Reference surface detector
JPS5334877A (en) * 1976-09-13 1978-03-31 Ajinomoto Kk Rubber lining
DE2758831A1 (en) * 1977-12-30 1979-08-16 Rohrback Corp Detection method for surface deposits - uses differential heat flow measurement in comparison with reference surface
USRE33346E (en) * 1980-10-30 1990-09-25 Drew Chemical Corporation Process and apparatus for testing fluids for fouling
USRE33468E (en) * 1980-10-30 1990-12-04 Drew Chemical Corporation Process and apparatus for testing fluids for fouling and antifoulant protocol
US5025220A (en) * 1989-09-21 1991-06-18 Ford Motor Company Continuous measurement of the absolute conductivity of a liquid
US5473643A (en) * 1994-08-19 1995-12-05 Westinghouse Idaho Nuclear Company Corrosion testing using isotopes
JP3464843B2 (en) * 1995-03-30 2003-11-10 大日本スクリーン製造株式会社 Substrate processing method and substrate processing apparatus in substrate processing apparatus
US5576481A (en) * 1995-10-02 1996-11-19 Ashland, Inc. Method and apparatus for detecting microbiological fouling in aqueous systems
CA2233455C (en) * 1995-09-29 2010-08-17 Ashland Inc. Method and apparatus for detecting microbiological fouling in aqueous systems
US5810976A (en) * 1996-12-23 1998-09-22 Grand Environmental Corporation Device for processing water having high concentrations of scale forming compounds and high solids content in a high efficiency vapor compression distillation system
CA2197535A1 (en) * 1997-02-13 1998-08-13 John Nenniger Method and apparatus for measurement and prediction of waxy crude characteristics
US5947111A (en) * 1998-04-30 1999-09-07 Hudson Products Corporation Apparatus for the controlled heating of process fluids
US5969235A (en) * 1998-07-02 1999-10-19 Nalco Chemical Company System and method for measuring scale deposition including a tuning fork for use in the system and the method
GB0327863D0 (en) * 2003-12-02 2004-01-07 Univ Heriot Watt Electrochemical sensor
KR20060088780A (en) * 2005-02-02 2006-08-07 삼성전자주식회사 Micro valve device and apparatus adopting the same
CA2619920A1 (en) * 2008-02-06 2009-08-06 Hydro-Quebec Method for measuring the temperature of the hot spot in an electric device containing oil
FR2965281B1 (en) * 2010-09-27 2013-05-03 Pool Technologie METHOD FOR MANAGING THE INVERSION FREQUENCY OF AN ELECTROCHEMICAL REACTOR
US20200048564A1 (en) * 2018-08-08 2020-02-13 Jaysun Gillingham Method for separating basic-sediment and water from oil in a crude-oil sample
CN112730953B (en) * 2021-01-07 2023-09-01 云南电网有限责任公司电力科学研究院 High-voltage direct-current voltage measurement system based on electrolyte partial pressure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374088A (en) * 1941-01-28 1945-04-17 Du Pont Corrosion recorder
BE792443A (en) * 1971-12-14 1973-03-30 Betz Laboratories PROBE ASSEMBLY FOR MEASURING CORROSION

Also Published As

Publication number Publication date
DE2407081C3 (en) 1980-03-20
US3848187A (en) 1974-11-12
DE2407081A1 (en) 1974-09-05
DE2407081B2 (en) 1979-07-05
IT1015819B (en) 1977-05-20
FR2219413A1 (en) 1974-09-20
FR2219413B1 (en) 1977-03-04
JPS5025261A (en) 1975-03-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee