JPS57111415A - Capacitive level meter - Google Patents
Capacitive level meterInfo
- Publication number
- JPS57111415A JPS57111415A JP55185199A JP18519980A JPS57111415A JP S57111415 A JPS57111415 A JP S57111415A JP 55185199 A JP55185199 A JP 55185199A JP 18519980 A JP18519980 A JP 18519980A JP S57111415 A JPS57111415 A JP S57111415A
- Authority
- JP
- Japan
- Prior art keywords
- current
- change
- level meter
- ammeter
- reservoir
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
PURPOSE:To realize the common use between a power line and a signal line with a small amount of power consumption and at the same time to simplify the constitution of a device, by varying the supply current in accordance with the capacity change of a detection electrode at a remote place such as a reservoir, etc. CONSTITUTION:A level meter includes a power supply part 6 having an ammeter 5 connected in series to a DC power source 4, an opposite electrode 1 provided at a position of detection distant away from the part 6, a converting part 2 where the change of capacity between electrodes 1 is converted into the voltage and then the current flowed from the part 6 is varied, and a constant voltage generating part 3 that supplied the constant voltage to the part 2 at all times by flowing a constant current from the part 6. Thus the water level is detected for a reservoir, etc. at a remote place from a change of current indicated by the ammeter 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55185199A JPS57111415A (en) | 1980-12-29 | 1980-12-29 | Capacitive level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55185199A JPS57111415A (en) | 1980-12-29 | 1980-12-29 | Capacitive level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57111415A true JPS57111415A (en) | 1982-07-10 |
Family
ID=16166590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55185199A Pending JPS57111415A (en) | 1980-12-29 | 1980-12-29 | Capacitive level meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57111415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0235031U (en) * | 1988-08-31 | 1990-03-06 | ||
| CN108880615A (en) * | 2018-06-13 | 2018-11-23 | 国网山西省电力公司电力科学研究院 | Intelligent electrode conversion equipment based on power line carrier, PLC and pseudo- communication cable |
-
1980
- 1980-12-29 JP JP55185199A patent/JPS57111415A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0235031U (en) * | 1988-08-31 | 1990-03-06 | ||
| CN108880615A (en) * | 2018-06-13 | 2018-11-23 | 国网山西省电力公司电力科学研究院 | Intelligent electrode conversion equipment based on power line carrier, PLC and pseudo- communication cable |
| CN108880615B (en) * | 2018-06-13 | 2021-04-02 | 国网山西省电力公司电力科学研究院 | Intelligent electrode conversion device based on power line carrier communication and pseudo-connection cable |
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