JPS56147020A - Ultrasonic level gage - Google Patents

Ultrasonic level gage

Info

Publication number
JPS56147020A
JPS56147020A JP4988180A JP4988180A JPS56147020A JP S56147020 A JPS56147020 A JP S56147020A JP 4988180 A JP4988180 A JP 4988180A JP 4988180 A JP4988180 A JP 4988180A JP S56147020 A JPS56147020 A JP S56147020A
Authority
JP
Japan
Prior art keywords
measured
level
reflected
correcting
temp
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.)
Pending
Application number
JP4988180A
Other languages
Japanese (ja)
Inventor
Hiroshi Minami
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP4988180A priority Critical patent/JPS56147020A/en
Publication of JPS56147020A publication Critical patent/JPS56147020A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To make the correction of measurement error owing to the temp. change of transmission space simple by providing a correcting plate which reflects a part of ultrasonic wave pulses and correcting the level measured values by utilizing the reflected waves thereof. CONSTITUTION:When ultrasonic pulses are radiated from a transmitter-receiver 11 to the point 13 to be measured, a part of ultrasonic wave beams are reflected by a correcting plate 15, and the greater part are reflected by the surface 12 to be measured. The respective reflected waves are received in the transmitter-receiver 11. In this case, the measured values of the reflection levels from the fixed plate 15 are correted with respect to distances at all times, and the measured level from the reflection surface 12 is corrected by using the corrected values. These prevent the gage from receiving level changes owing to the temp. of the transmission space, hence permit the level measurement free from errors.
JP4988180A 1980-04-16 1980-04-16 Ultrasonic level gage Pending JPS56147020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4988180A JPS56147020A (en) 1980-04-16 1980-04-16 Ultrasonic level gage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4988180A JPS56147020A (en) 1980-04-16 1980-04-16 Ultrasonic level gage

Publications (1)

Publication Number Publication Date
JPS56147020A true JPS56147020A (en) 1981-11-14

Family

ID=12843376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4988180A Pending JPS56147020A (en) 1980-04-16 1980-04-16 Ultrasonic level gage

Country Status (1)

Country Link
JP (1) JPS56147020A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106624A (en) * 1982-12-06 1984-06-20 Mitsui Constr Co Ltd Underground excavator
JPS6197584A (en) * 1984-10-19 1986-05-16 Kawasaki Steel Corp Ultrasonic type distance measuring method and apparatus thereof
JPS61104277A (en) * 1984-10-26 1986-05-22 Sumitomo Metal Ind Ltd Correction of acoustic velocity in ultrasonic measuring apparatus
JPS6214077A (en) * 1985-07-11 1987-01-22 Nippon Denso Co Ltd Ultrasonic distance measuring apparatus for vehicle
JPH03501881A (en) * 1988-08-23 1991-04-25 ウルトラソニック　アレイズ　インコーポレーテッド A device that uses ultrasonic energy to measure the distance to a target

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106624A (en) * 1982-12-06 1984-06-20 Mitsui Constr Co Ltd Underground excavator
JPS6218690B2 (en) * 1982-12-06 1987-04-24 Mitsui Constr
JPS6197584A (en) * 1984-10-19 1986-05-16 Kawasaki Steel Corp Ultrasonic type distance measuring method and apparatus thereof
JPH0123754B2 (en) * 1984-10-19 1989-05-08 Kawasaki Steel Co
JPS61104277A (en) * 1984-10-26 1986-05-22 Sumitomo Metal Ind Ltd Correction of acoustic velocity in ultrasonic measuring apparatus
JPH0627804B2 (en) * 1984-10-26 1994-04-13 住友金属工業株式会社 Distance measurement method using ultrasonic measuring device
JPS6214077A (en) * 1985-07-11 1987-01-22 Nippon Denso Co Ltd Ultrasonic distance measuring apparatus for vehicle
JPH03501881A (en) * 1988-08-23 1991-04-25 ウルトラソニック　アレイズ　インコーポレーテッド A device that uses ultrasonic energy to measure the distance to a target

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