JPS5465062A - Optical liquid level detector - Google Patents
Optical liquid level detectorInfo
- Publication number
- JPS5465062A JPS5465062A JP13177977A JP13177977A JPS5465062A JP S5465062 A JPS5465062 A JP S5465062A JP 13177977 A JP13177977 A JP 13177977A JP 13177977 A JP13177977 A JP 13177977A JP S5465062 A JPS5465062 A JP S5465062A
- Authority
- JP
- Japan
- Prior art keywords
- face
- optical fiber
- water level
- light
- photo diode
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE:To enable the detector to be safely used for gasoline tanks as well which require explosion-proofing by using an optical fiber whose one end face is made to an optically rough surface as an optical liquid level detector. CONSTITUTION:The end face 1a of an optical fiber 1 which is formed to an optically rough surface is opposed to the water level 8 to be detected and is fixed in a certain fixed height position. When the end face 1a is above the water level 8, the light from a light emitting diode 2 passes through the optical fiber 1 and is scattered by the end face 1a, then some of the light advances backward and is detected with a photo diode 3. When the water level 8 rises and the end face 1a of the optical fiber 1 submerges in the water level 8, the light goes straightforward in the water without scattering, producting no more output in the photo diode 3. Hence, by observing the output of the photo diode 3, whether the water level 8 is above or below the end face 1a of the optical fiber 1 may be judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13177977A JPS5465062A (en) | 1977-11-02 | 1977-11-02 | Optical liquid level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13177977A JPS5465062A (en) | 1977-11-02 | 1977-11-02 | Optical liquid level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5465062A true JPS5465062A (en) | 1979-05-25 |
Family
ID=15065945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13177977A Pending JPS5465062A (en) | 1977-11-02 | 1977-11-02 | Optical liquid level detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5465062A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6324145A (en) * | 1986-07-02 | 1988-02-01 | Sanyo Kokusaku Pulp Co Ltd | Method and instrument for measuring water of sheet in drier part |
| JPS6324144A (en) * | 1986-07-02 | 1988-02-01 | Sanyo Kokusaku Pulp Co Ltd | Method and instrument for infrared measurement of moisture of traveling sheet in explosive atmosphere |
| JP2009250710A (en) * | 2008-04-03 | 2009-10-29 | Rohm Co Ltd | Microchip |
-
1977
- 1977-11-02 JP JP13177977A patent/JPS5465062A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6324145A (en) * | 1986-07-02 | 1988-02-01 | Sanyo Kokusaku Pulp Co Ltd | Method and instrument for measuring water of sheet in drier part |
| JPS6324144A (en) * | 1986-07-02 | 1988-02-01 | Sanyo Kokusaku Pulp Co Ltd | Method and instrument for infrared measurement of moisture of traveling sheet in explosive atmosphere |
| JPH056862B2 (en) * | 1986-07-02 | 1993-01-27 | Sanyo Kokusaku Pulp Co | |
| JPH056861B2 (en) * | 1986-07-02 | 1993-01-27 | Sanyo Kokusaku Pulp Co | |
| JP2009250710A (en) * | 2008-04-03 | 2009-10-29 | Rohm Co Ltd | Microchip |
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