JPS5443772A - Level detector of tuning fork type - Google Patents
Level detector of tuning fork typeInfo
- Publication number
- JPS5443772A JPS5443772A JP10985777A JP10985777A JPS5443772A JP S5443772 A JPS5443772 A JP S5443772A JP 10985777 A JP10985777 A JP 10985777A JP 10985777 A JP10985777 A JP 10985777A JP S5443772 A JPS5443772 A JP S5443772A
- Authority
- JP
- Japan
- Prior art keywords
- shaped portion
- vibrations
- fork
- tuning fork
- level detector
- 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 prevent erroneous operations even for the level detection of ultra fine powders by forming a tuning fork into a general Y-shape so that its U-shaped portion is used to establish vibrations and that its I-shaped portion is used to detect the level.
CONSTITUTION: A tuning form 6 is formed into a general Y-shape which is composed of a U-shaped portion for vibrations and an I-shaped portion for level detection. The form 6 is vibrated with its intrinsic freqnency, which is converted by a piezoelectric element 2A into electric signals to be amplified by an amplifier 7. If, now, fine powders are brought into contact with the I-shaped portion 6b forming the fork 6 so that this portion is retained, the positive feedback loop is blocked to attenuate the vibrations until they are stopped. If, on the other hand, the restrictions are released, the fork 6 restarts its vibrations.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985777A JPS5443772A (en) | 1977-09-14 | 1977-09-14 | Level detector of tuning fork type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10985777A JPS5443772A (en) | 1977-09-14 | 1977-09-14 | Level detector of tuning fork type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5443772A true JPS5443772A (en) | 1979-04-06 |
Family
ID=14520945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10985777A Pending JPS5443772A (en) | 1977-09-14 | 1977-09-14 | Level detector of tuning fork type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5443772A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56138024A (en) * | 1980-03-31 | 1981-10-28 | Aisin Seiki Co Ltd | Driver's seat |
JPS57500012A (en) * | 1980-01-31 | 1982-01-07 | ||
JPS6035225U (en) * | 1983-08-17 | 1985-03-11 | 株式会社リコー | powder level sensor |
JPS6267836U (en) * | 1985-10-18 | 1987-04-27 |
-
1977
- 1977-09-14 JP JP10985777A patent/JPS5443772A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57500012A (en) * | 1980-01-31 | 1982-01-07 | ||
JPS56138024A (en) * | 1980-03-31 | 1981-10-28 | Aisin Seiki Co Ltd | Driver's seat |
JPS6035225U (en) * | 1983-08-17 | 1985-03-11 | 株式会社リコー | powder level sensor |
JPS6267836U (en) * | 1985-10-18 | 1987-04-27 |
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