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GB1122987A - Improvements relating to the measurement and/or control of moisture content - Google Patents

Improvements relating to the measurement and/or control of moisture content

Info

Publication number
GB1122987A
GB1122987A GB4149764A GB4149764A GB1122987A GB 1122987 A GB1122987 A GB 1122987A GB 4149764 A GB4149764 A GB 4149764A GB 4149764 A GB4149764 A GB 4149764A GB 1122987 A GB1122987 A GB 1122987A
Authority
GB
United Kingdom
Prior art keywords
waveguide
microwave energy
microwave
oct
generator
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
GB4149764A
Inventor
William Charles Reed
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.)
MICROWAVE INSTR Ltd
Original Assignee
MICROWAVE INSTR Ltd
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 MICROWAVE INSTR Ltd filed Critical MICROWAVE INSTR Ltd
Priority to GB4149764A priority Critical patent/GB1122987A/en
Priority to DE19651598771 priority patent/DE1598771A1/en
Priority to NL6513209A priority patent/NL6513209A/xx
Publication of GB1122987A publication Critical patent/GB1122987A/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
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G01N22/04—Investigating moisture content

Landscapes

  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Drying Of Solid Materials (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

1,122,987. Microwave heating. MICROWAVE INSTRUMENTS Ltd. 11 Oct., 1965 [12 Oct., 1964], No. 41497/64. Heading H5H. [Also in Divisions F4 and G1] Particulate material is heated or dried by the absorption of microwave energy while being passed down a vertical waveguide 1 in countercurrent to a heated pressurized air flow which maintains the material in a fluidized state. As shown in Fig. 3, microwaves from a generator 8 pass down the waveguide through the material and are mostly absorbed in a lossy load 30. A directional coupler 31 leads part of the microwave energy through a level set attenuator 33 to a crystal detector 34, the output of which controls the power output of the generator 8 or the temperature and/or humidity of the incoming air. Rejector means 14, 15 prevent leakage of microwave energy through openings 2 and 6. A vacuum extraction unit may be provided at the top of the waveguide to set up a forced circulation.
GB4149764A 1964-10-12 1964-10-12 Improvements relating to the measurement and/or control of moisture content Expired GB1122987A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4149764A GB1122987A (en) 1964-10-12 1964-10-12 Improvements relating to the measurement and/or control of moisture content
DE19651598771 DE1598771A1 (en) 1964-10-12 1965-10-11 Device for measuring and / or controlling the moisture content of finely divided material
NL6513209A NL6513209A (en) 1964-10-12 1965-10-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4149764A GB1122987A (en) 1964-10-12 1964-10-12 Improvements relating to the measurement and/or control of moisture content

Publications (1)

Publication Number Publication Date
GB1122987A true GB1122987A (en) 1968-08-07

Family

ID=10419963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4149764A Expired GB1122987A (en) 1964-10-12 1964-10-12 Improvements relating to the measurement and/or control of moisture content

Country Status (3)

Country Link
DE (1) DE1598771A1 (en)
GB (1) GB1122987A (en)
NL (1) NL6513209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651085A (en) * 1983-04-06 1987-03-17 Nippondenso Co., Ltd. Apparatus for measuring the ratio of alcohol contained in mixed fuel
US5103181A (en) * 1988-10-05 1992-04-07 Den Norske Oljeselskap A. S. Composition monitor and monitoring process using impedance measurements

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651085A (en) * 1983-04-06 1987-03-17 Nippondenso Co., Ltd. Apparatus for measuring the ratio of alcohol contained in mixed fuel
US5103181A (en) * 1988-10-05 1992-04-07 Den Norske Oljeselskap A. S. Composition monitor and monitoring process using impedance measurements

Also Published As

Publication number Publication date
NL6513209A (en) 1966-04-13
DE1598771A1 (en) 1970-03-26

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