JPH01144827U - - Google Patents
Info
- Publication number
- JPH01144827U JPH01144827U JP4112188U JP4112188U JPH01144827U JP H01144827 U JPH01144827 U JP H01144827U JP 4112188 U JP4112188 U JP 4112188U JP 4112188 U JP4112188 U JP 4112188U JP H01144827 U JPH01144827 U JP H01144827U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oil level
- threshold
- amplifier circuit
- sensor according
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
第１図は本考案の実施例の部分ブロツク回路図
、第２図はセンサの詳細な断面図、第３図はオイ
ルレベルと出力電圧との関係を示すグラフ、第４
図は本考案に係るオイルレベルセンサの実装状態
を示す部分的な機構図、第５図は従来例の概括的
機構図である。
１２，１３……電極、１５……オペアンプ、１
６……増幅回路、１８……センサ、２２……閾値
回路、２３……スイツチ、２５……表示回路。
Fig. 1 is a partial block circuit diagram of an embodiment of the present invention, Fig. 2 is a detailed sectional view of the sensor, Fig. 3 is a graph showing the relationship between oil level and output voltage, and Fig. 4 is a graph showing the relationship between oil level and output voltage.
The figure is a partial mechanism diagram showing the mounting state of the oil level sensor according to the present invention, and FIG. 5 is a general mechanism diagram of a conventional example. 12, 13... Electrode, 15... Operational amplifier, 1
6...Amplification circuit, 18...Sensor, 22...Threshold circuit, 23...Switch, 25...Display circuit.
Claims (1)
の絶縁抵抗を測定することによりオイルレベルを
検出するセンサであつて、前記２つの電極１２，
１３間に形成される高抵抗を低インピーダンスの
電圧に変換する増幅回路１６と、前記増幅回路１
６の出力電圧が所定値以下の時に前記増幅回路１
６の出力が表示回路２５に供給されるのを阻止す
る閾値回路２２とを備えたオイルレベルセンサ。 ２ 閾値回路２２と他の検出回路２４の出力を選
択的に表示回路２５に供給するスイツチ２３を備
える実用新案登録請求の範囲第１項に記載のオイ
ルレベルセンサ。 ３ 閾値回路２２がツエナーダイオードを含むこ
とを特徴とする実用新案登録請求の範囲第２項に
記載のオイルレベルセンサ。[Claims for Utility Model Registration] 1. A sensor that detects an oil level by measuring the insulation resistance of oil immersed between two electrodes 12, 13, which comprises:
an amplifier circuit 16 that converts the high resistance formed between 13 into a low impedance voltage; and the amplifier circuit 1
When the output voltage of 6 is below a predetermined value, the amplifier circuit 1
and a threshold circuit 22 that prevents the output of 6 from being supplied to the display circuit 25. 2. The oil level sensor according to claim 1, which includes a switch 23 that selectively supplies the outputs of the threshold circuit 22 and the other detection circuit 24 to the display circuit 25. 3. The oil level sensor according to claim 2, wherein the threshold circuit 22 includes a Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4112188U JPH01144827U (en) | 1988-03-30 | 1988-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4112188U JPH01144827U (en) | 1988-03-30 | 1988-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01144827U true JPH01144827U (en) | 1989-10-04 |
Family
ID=31267572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4112188U Pending JPH01144827U (en) | 1988-03-30 | 1988-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01144827U (en) |
-
1988
- 1988-03-30 JP JP4112188U patent/JPH01144827U/ja active Pending