JPS56100316A - Liquid level indicator for molten glass - Google Patents

Liquid level indicator for molten glass

Info

Publication number
JPS56100316A
JPS56100316A JP382880A JP382880A JPS56100316A JP S56100316 A JPS56100316 A JP S56100316A JP 382880 A JP382880 A JP 382880A JP 382880 A JP382880 A JP 382880A JP S56100316 A JPS56100316 A JP S56100316A
Authority
JP
Japan
Prior art keywords
light
liquid surface
light shielding
constitution
plate
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
JP382880A
Other languages
Japanese (ja)
Inventor
Tadao Hirakawa
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.)
HIRAKAWA DENKI KK
Original Assignee
HIRAKAWA DENKI KK
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 HIRAKAWA DENKI KK filed Critical HIRAKAWA DENKI KK
Priority to JP382880A priority Critical patent/JPS56100316A/en
Publication of JPS56100316A publication Critical patent/JPS56100316A/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
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet

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)

Abstract

PURPOSE:To enable the measurement with high accuracy with a simple constitution, by providing a light shielding plate which receives light with sent amount at all times through light shielding of photodetector and light receiving plane moving with the liquid surface up and down, the measuring the amount of movement of light shielding plate. CONSTITUTION:A light emitter 4 projected on the liquid surface of a molten glass 3 and a photodetector device 5 receiving the reflected light are provided. The device 5 is moved up and down via a given automatic balancing circuit of DC potential difference type in response to the height of the liquid surface. A light shielding plate 6 is fitted in front of the device 5, which is provided movably front and back via a given automatic balancing circuit so that a given area indicated with hatched lines of the light receiving surface 5' can always be shielded. With this constitution, the device 5 is up and down with the liquid surface, and the plate 6 moves front and back so that light reception with set amount can always be made. The liquid level can be measured with the distance of movement of this plate 6. Thus, with a simple constitution, the measurement with good accuracy can be made without corrosion and wear.
JP382880A 1980-01-16 1980-01-16 Liquid level indicator for molten glass Pending JPS56100316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP382880A JPS56100316A (en) 1980-01-16 1980-01-16 Liquid level indicator for molten glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP382880A JPS56100316A (en) 1980-01-16 1980-01-16 Liquid level indicator for molten glass

Publications (1)

Publication Number Publication Date
JPS56100316A true JPS56100316A (en) 1981-08-12

Family

ID=11568052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP382880A Pending JPS56100316A (en) 1980-01-16 1980-01-16 Liquid level indicator for molten glass

Country Status (1)

Country Link
JP (1) JPS56100316A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250520A (en) * 1985-04-30 1986-11-07 Hoya Corp Liquid level meter
EP0681904A2 (en) * 1988-09-26 1995-11-15 3D Systems, Inc. Stereolithographic apparatus with means to measure and control the level of fluid
US6848271B2 (en) * 2001-03-30 2005-02-01 Endress + Hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh + Co. Automated method and device for manufacturing a glass blown object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250520A (en) * 1985-04-30 1986-11-07 Hoya Corp Liquid level meter
EP0681904A2 (en) * 1988-09-26 1995-11-15 3D Systems, Inc. Stereolithographic apparatus with means to measure and control the level of fluid
EP0681904A3 (en) * 1988-09-26 1996-02-07 3D Systems Inc Stereolithographic apparatus with means to measure and control the level of fluid.
US6848271B2 (en) * 2001-03-30 2005-02-01 Endress + Hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh + Co. Automated method and device for manufacturing a glass blown object

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