JPS54116269A - Level detector for powder and granular materials - Google Patents
Level detector for powder and granular materialsInfo
- Publication number
- JPS54116269A JPS54116269A JP2204878A JP2204878A JPS54116269A JP S54116269 A JPS54116269 A JP S54116269A JP 2204878 A JP2204878 A JP 2204878A JP 2204878 A JP2204878 A JP 2204878A JP S54116269 A JPS54116269 A JP S54116269A
- Authority
- JP
- Japan
- Prior art keywords
- tuning bar
- powder
- tuning
- bar
- natural frequency
- 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.)
- Granted
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
PURPOSE: To achieve the prevention of deposition of powder and granular materials on a level detecting vibrator and enable the detector to operate surely even for powder and granular materials of high cohesive and adhesive forces by forcefully vibrating the vibrator such as tuning fork, tuning bar of the like with natural frequency.
CONSTITUTION: When the output voltage of an oscillating circuit 4 generating voltage at the frequency nearly equal to the natural frequency of a tuning bar 1 is applied to an electrostrictive vibrating element 3a, the tuning bar 1 is forcefully vibrated by the natural frequency and this causes the electrostrictive vibrating element 3b to generate an electric signal. After this signal is amplified with an amplifier 5, it is converted to an arbitrary signal in a signal processing circuit 6. Now, when powder or granular material touches the tuning bar 1 and restrains the same, the vibrations of the tuning bar 1 attenuate or stop, but when there is no more powder or granular material, the tuning bar 1 again begins to make separate excitation vibration. This enables the level of the one restraining the vibration of the tuning bar 1 to be detected by the output voltage of the amplifier 5 and the powder or granular material depositing on the tuning bar 1 to be readily shaken off by the forceful separate excitation vibration of the tuning bar 1, thus making possible the sure level detection.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53022048A JPS5947246B2 (en) | 1978-03-01 | 1978-03-01 | Powder level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53022048A JPS5947246B2 (en) | 1978-03-01 | 1978-03-01 | Powder level detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54116269A true JPS54116269A (en) | 1979-09-10 |
| JPS5947246B2 JPS5947246B2 (en) | 1984-11-17 |
Family
ID=12072032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53022048A Expired JPS5947246B2 (en) | 1978-03-01 | 1978-03-01 | Powder level detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947246B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007307536A (en) * | 2006-05-19 | 2007-11-29 | Koyo Engineering Co Ltd | Coating material container for application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52263U (en) * | 1975-06-20 | 1977-01-05 | ||
| JPS5947246A (en) * | 1982-09-10 | 1984-03-16 | Ube Ind Ltd | Photo-curable composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52263B2 (en) * | 1973-05-07 | 1977-01-06 |
-
1978
- 1978-03-01 JP JP53022048A patent/JPS5947246B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52263U (en) * | 1975-06-20 | 1977-01-05 | ||
| JPS5947246A (en) * | 1982-09-10 | 1984-03-16 | Ube Ind Ltd | Photo-curable composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007307536A (en) * | 2006-05-19 | 2007-11-29 | Koyo Engineering Co Ltd | Coating material container for application |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5947246B2 (en) | 1984-11-17 |
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