JPS6426213A - Water level conversion device - Google Patents
Water level conversion deviceInfo
- Publication number
- JPS6426213A JPS6426213A JP18255787A JP18255787A JPS6426213A JP S6426213 A JPS6426213 A JP S6426213A JP 18255787 A JP18255787 A JP 18255787A JP 18255787 A JP18255787 A JP 18255787A JP S6426213 A JPS6426213 A JP S6426213A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- water
- tank
- variation
- output signal
- 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
- Control Of Non-Electrical Variables (AREA)
Abstract
PURPOSE:To detect even the low level of water with high accuracy by driving a feed water valve driving means and reading the output signal of a water level detecting means within a constant period, deciding that the water level in a tank is 0 when its variation is smaller than a specific value, and correcting a value corresponding to a desired water level according to the output signal. CONSTITUTION:A control means 4 reads variation of the output signal of the water level detecting means 3 within the constant period from the start of feeding water into the tank and when the variation is smaller than the constant value, it is decided that the water level in the tank is 0; and the value corresponding to the desired water level is calculated with the output signal of the water level detecting means 3 when the water level is 0 to perform water level control. Even if operation is started by mistake while water is reservoired in the tank, corrections are never made according to the water level signal in the presence of the water. Consequently, invariably high-accuracy water level detection is performed and corrections are made to detect even the low level of water with high accuracy regardless of variation in ambient temperature and variance of a water level detecting device itself at the time of mass- production.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18255787A JPH0642167B2 (en) | 1987-07-22 | 1987-07-22 | Water level converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18255787A JPH0642167B2 (en) | 1987-07-22 | 1987-07-22 | Water level converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6426213A true JPS6426213A (en) | 1989-01-27 |
JPH0642167B2 JPH0642167B2 (en) | 1994-06-01 |
Family
ID=16120358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18255787A Expired - Lifetime JPH0642167B2 (en) | 1987-07-22 | 1987-07-22 | Water level converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0642167B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01180016A (en) * | 1988-01-08 | 1989-07-18 | Matsushita Electric Ind Co Ltd | Water level converting device |
CN102759930A (en) * | 2012-08-06 | 2012-10-31 | 孙效 | Level control device |
-
1987
- 1987-07-22 JP JP18255787A patent/JPH0642167B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01180016A (en) * | 1988-01-08 | 1989-07-18 | Matsushita Electric Ind Co Ltd | Water level converting device |
CN102759930A (en) * | 2012-08-06 | 2012-10-31 | 孙效 | Level control device |
Also Published As
Publication number | Publication date |
---|---|
JPH0642167B2 (en) | 1994-06-01 |
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