Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
  • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
  • G01S13/88—Radar or analogous systems specially adapted for specific applications
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
  • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
  • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
  • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
  • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
  • G01F23/284—Electromagnetic waves
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
  • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
  • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
  • G01S13/06—Systems determining position data of a target
  • G01S13/08—Systems for measuring distance only
  • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
  • G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Remote Sensing (AREA)
• Radar, Positioning & Navigation (AREA)
• Electromagnetism (AREA)
• General Physics & Mathematics (AREA)
• Computer Networks & Wireless Communication (AREA)
• Fluid Mechanics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• Analytical Chemistry (AREA)
• Pathology (AREA)
• Immunology (AREA)
• General Health & Medical Sciences (AREA)
• Biochemistry (AREA)
• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
• Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
• Radar Systems Or Details Thereof (AREA)
• Length Measuring Devices With Unspecified Measuring Means (AREA)
• Investigating Or Analyzing Materials Using Thermal Means (AREA)

Priority Applications (11)

Applications Claiming Priority (1)

Publications (3)

Family

ID=20388768

Family Applications (1)

Country Status (11)

Families Citing this family (37)

Family Cites Families (9)

• 1993
  • 1993-02-03 SE SE9300348A patent/SE501472C2/sv not_active IP Right Cessation
• 1994
  • 1994-02-03 CA CA002155682A patent/CA2155682C/en not_active Expired - Fee Related
  • 1994-02-03 KR KR1019950703206A patent/KR100316440B1/ko not_active Expired - Fee Related
  • 1994-02-03 AT AT94906422T patent/ATE250760T1/de not_active IP Right Cessation
  • 1994-02-03 WO PCT/SE1994/000099 patent/WO1994018549A1/en not_active Ceased
  • 1994-02-03 DE DE69433175T patent/DE69433175T2/de not_active Expired - Fee Related
  • 1994-02-03 ES ES94906422T patent/ES2208654T3/es not_active Expired - Lifetime
  • 1994-02-03 AU AU60129/94A patent/AU703330B2/en not_active Ceased
  • 1994-02-03 EP EP94906422A patent/EP0697108B1/en not_active Expired - Lifetime
  • 1994-02-03 JP JP6517955A patent/JPH08506894A/ja active Pending
• 1995
  • 1995-08-02 US US08/510,216 patent/US5629706A/en not_active Expired - Fee Related

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