JPS61152922U - - Google Patents
Info
- Publication number
- JPS61152922U JPS61152922U JP3670285U JP3670285U JPS61152922U JP S61152922 U JPS61152922 U JP S61152922U JP 3670285 U JP3670285 U JP 3670285U JP 3670285 U JP3670285 U JP 3670285U JP S61152922 U JPS61152922 U JP S61152922U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- signal
- threshold
- liquid level
- liquid
- 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
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Description
第１図は本考案の液面レベルセンサを示すクレ
ーム概念図、第２図は本考案実施例の液面レベル
センサを示すブロツク回路図、第３図は実施例セ
ンサを示す回路図、第４図は実施例センサによる
しきい電圧の変化を示すグラフ、第５図は従来の
液面レベルセンサを示すブロツク回路図、第６図
は従来のセンサにおけるしきい値設定を説明する
図である。
１，２……電極部材、３……検出回路、４……
比較器、５……温度センサ、６……しきい値設定
回路、Ｖ１……検出値信号、Ｔ……温度信号、Ｖ
ｍ……しきい値信号、Ｆ……出力信号。
Fig. 1 is a conceptual diagram of a claim showing a liquid level sensor of the present invention, Fig. 2 is a block circuit diagram showing a liquid level sensor of an embodiment of the invention, Fig. 3 is a circuit diagram showing an embodiment sensor, and Fig. 4 is a block circuit diagram showing a liquid level sensor of an embodiment of the invention. FIG. 5 is a graph showing changes in threshold voltage according to the embodiment sensor, FIG. 5 is a block circuit diagram showing a conventional liquid level sensor, and FIG. 6 is a diagram illustrating threshold setting in the conventional sensor. 1, 2... Electrode member, 3... Detection circuit, 4...
Comparator, 5... Temperature sensor, 6... Threshold setting circuit, V 1 ... Detected value signal, T... Temperature signal, V
m...Threshold signal, F...Output signal.
Claims (1)
される電極部材と、該電極部材に外部電流を印加
することにより得られる入力信号を検出値信号に
変換する検出回路と、該検出回路からの検出値信
号と比較基準となるしきい値とを比較し、所定の
出力信号を出力させる比較器と、を備えた液面レ
ベルセンサにおいて、 前記液体中に温度センサを設け、該温度センサ
からの温度信号を入力して温度に応じたしきい値
信号を出力させるしきい値設定回路を、前記比較
器に接続させたことを特徴とする液面レベルセン
サ。[Claims for Utility Model Registration] An electrode member disposed through a liquid whose conductivity changes depending on temperature, and a detection circuit that converts an input signal obtained by applying an external current to the electrode member into a detected value signal. and a comparator that compares the detected value signal from the detection circuit with a threshold value serving as a comparison standard and outputs a predetermined output signal, the liquid level sensor comprising: a temperature sensor in the liquid; A liquid level sensor comprising: a threshold setting circuit connected to the comparator; the threshold setting circuit inputs a temperature signal from the temperature sensor and outputs a threshold signal according to the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3670285U JPS61152922U (en) | 1985-03-13 | 1985-03-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3670285U JPS61152922U (en) | 1985-03-13 | 1985-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61152922U true JPS61152922U (en) | 1986-09-22 |
Family
ID=30542129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3670285U Pending JPS61152922U (en) | 1985-03-13 | 1985-03-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61152922U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410735A (en) * | 1977-06-23 | 1979-01-26 | Siemens Ag | Monitor for stock of recording liquid in recording machine |
| JPS59168322A (en) * | 1983-03-14 | 1984-09-22 | Toyota Central Res & Dev Lab Inc | Method and device for measuring lubricating oil |
-
1985
- 1985-03-13 JP JP3670285U patent/JPS61152922U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410735A (en) * | 1977-06-23 | 1979-01-26 | Siemens Ag | Monitor for stock of recording liquid in recording machine |
| JPS59168322A (en) * | 1983-03-14 | 1984-09-22 | Toyota Central Res & Dev Lab Inc | Method and device for measuring lubricating oil |