JPS6465419A - Liquid level detector - Google Patents
Liquid level detectorInfo
- Publication number
- JPS6465419A JPS6465419A JP22157987A JP22157987A JPS6465419A JP S6465419 A JPS6465419 A JP S6465419A JP 22157987 A JP22157987 A JP 22157987A JP 22157987 A JP22157987 A JP 22157987A JP S6465419 A JPS6465419 A JP S6465419A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- liquid level
- detecting element
- level position
- application
- 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 expand the application temperature range of the detecting device by judging a liquid level position corresponding to variation in the temperature of a temperature detecting element. CONSTITUTION:The temperature detecting element 4 indicates a basic temperature variation cycle where the temperature returns almost to starting temperature from a nearly saturation state of a temperature rise by the intermittent voltage application and application stop of a voltage applying means 20 (heating means). Then an arithmetic means 14 calculates the temperature deviation of the temperature detecting element 4 between the start and end of a period in the same intermittent cycle. Further, a deciding means 17 compares the temperature deviation with a threshold value for liquid level position decision making which is set by a threshold value setting means 16 to decide whether the liquid level position is above or below the temperature detecting element 4. Even if the heating value of the temperature detecting element 4 varies with its temperature to cause both air and liquid temperature deviations to vary, the misdetection of the liquid level position is eliminated since the threshold value setting means 16 sets a value between the temperature deviation in both air and liquid atmospheres, thereby expanding the application temperature range of the device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22157987A JPS6465419A (en) | 1987-09-04 | 1987-09-04 | Liquid level detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22157987A JPS6465419A (en) | 1987-09-04 | 1987-09-04 | Liquid level detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6465419A true JPS6465419A (en) | 1989-03-10 |
Family
ID=16768954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22157987A Pending JPS6465419A (en) | 1987-09-04 | 1987-09-04 | Liquid level detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6465419A (en) |
-
1987
- 1987-09-04 JP JP22157987A patent/JPS6465419A/en active Pending
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