GB878076A - Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material - Google Patents

Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material

Info

Publication number
GB878076A
GB878076A GB2205358A GB2205358A GB878076A GB 878076 A GB878076 A GB 878076A GB 2205358 A GB2205358 A GB 2205358A GB 2205358 A GB2205358 A GB 2205358A GB 878076 A GB878076 A GB 878076A
Authority
GB
United Kingdom
Prior art keywords
measuring
moisture content
test material
granular material
bulk granular
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
GB2205358A
Inventor
Harry Walther Dietert
Randolf Louis Dietert
Howard L Jameson
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.)
Harry W Dietert Co
Original Assignee
Harry W Dietert Co
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
Priority to US671295A priority Critical patent/US2957130A/en
Priority to US67482257 priority patent/US2886868A/en
Priority to CH356290D priority patent/CH356290A/en
Priority to FR1207720D priority patent/FR1207720A/en
Priority to DED28446A priority patent/DE1168124B/en
Application filed by Harry W Dietert Co filed Critical Harry W Dietert Co
Priority to GB2205358A priority patent/GB878076A/en
Priority to US838615A priority patent/US3047801A/en
Priority to CH1397660A priority patent/CH372483A/en
Publication of GB878076A publication Critical patent/GB878076A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B28C7/0409—Proportioning taking regard of the moisture content of the solid ingredients; Moisture indicators
    • 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
    • G01N27/043—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a granular material
    • 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
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00—Control of humidity
    • G05D22/02—Control of humidity characterised by the use of electric means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

878,076. Measuring electrically. DIETERT CO., HARRY, W. July 9, 1958, No. 22053/58. Class 40 (1). [Also in Group XXXVI] In a system for measuring and controlling the moisture content of bulk granular material, e.g. foundry moulding sand, in which the material is used as the dielectric of a capacitive measuring device (see Group XXXVI), compsnation for variation of temperature of the test material is obtained by comparing the output of a thermo-junction 38, located on a container 10 holding the test material, with that of a potentiometer 44, the error signal being converted in an inverse rectifier 40a, and fed via a transformer 40b to amplifiers 40c, 40d, the output of which operates an A.C. motor 42 to drive the potentiometer wiper to a null position, the pointer of an indicator 41, and a cam 46 which in turn operates a variable capacitor 48 to provide a capacitance representative of the temperature of the test material in the measuring and controlling circuit 53.
GB2205358A 1956-10-01 1958-07-09 Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material Expired GB878076A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US671295A US2957130A (en) 1956-10-01 1957-07-11 Sand conditioning equipment
US67482257 US2886868A (en) 1956-10-01 1957-07-29 End point moisture content control apparatus for sand
CH356290D CH356290A (en) 1956-10-01 1958-07-02 Device for measuring and regulating the moisture content of granular bulk material
FR1207720D FR1207720A (en) 1956-10-01 1958-07-03 Device for measuring and regulating the moisture content of a granular material in bulk
DED28446A DE1168124B (en) 1956-10-01 1958-07-03 Device for mixing and regulating the moisture content of grainy bulk material
GB2205358A GB878076A (en) 1958-07-09 1958-07-09 Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material
US838615A US3047801A (en) 1956-10-01 1959-09-08 Moisture probe
CH1397660A CH372483A (en) 1956-10-01 1960-12-13 Device for measuring and regulating the moisture content of granular bulk material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2205358A GB878076A (en) 1958-07-09 1958-07-09 Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material

Publications (1)

Publication Number Publication Date
GB878076A true GB878076A (en) 1961-09-27

Family

ID=10173135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2205358A Expired GB878076A (en) 1956-10-01 1958-07-09 Improvements in or relating to means for measuring and regulating the moisture content of bulk granular material

Country Status (1)

Country Link
GB (1) GB878076A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012161614A1 (en) * 2011-05-24 2012-11-29 Закрытое Акционерное Общество "Литаформ" Method for producing moulding sand and apparatus for carrying out said method (variant embodiments)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012161614A1 (en) * 2011-05-24 2012-11-29 Закрытое Акционерное Общество "Литаформ" Method for producing moulding sand and apparatus for carrying out said method (variant embodiments)
EA023590B1 (en) * 2011-05-24 2016-06-30 Закрытое Акционерное Общество "Литаформ" Moulding sand preparation method and device for its implementation

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