JPS62176729U - - Google Patents
Info
- Publication number
- JPS62176729U JPS62176729U JP6424686U JP6424686U JPS62176729U JP S62176729 U JPS62176729 U JP S62176729U JP 6424686 U JP6424686 U JP 6424686U JP 6424686 U JP6424686 U JP 6424686U JP S62176729 U JPS62176729 U JP S62176729U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- voltage
- constant current
- liquid
- liquid level
- 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 12
- 238000005259 measurement Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案に係る液面レベル測定装置の実
施例を示す図、第２図は第１図装置における測定
用抵抗体及び補償用抵抗体の構成を示す図、第３
図は第１図における検出電圧及び抵抗体の端子電
圧の液面レベル特性、及び温度特性を示す図、第
４図ａ，ｂは従来の液面レベル測定装置及びその
検出電圧の液面レベル特性をそれぞれ示す図であ
る。
Ｒ１……液面レベル測定用抵抗体、Ｒ２……温
度補償用抵抗体、Ｉ１，Ｉ２……定電流源、Ａ１
……インバータ、Ａ２……可変利得増幅器、Ａ３
……加算器、２……液体。
FIG. 1 is a diagram showing an embodiment of the liquid level measuring device according to the present invention, FIG. 2 is a diagram showing the configuration of a measuring resistor and a compensating resistor in the device shown in FIG. 1, and FIG.
The figure shows the liquid level characteristics and temperature characteristics of the detection voltage and the terminal voltage of the resistor in Fig. 1, and Fig. 4 a and b show the liquid level characteristics of a conventional liquid level measuring device and its detection voltage. FIG. R 1 ... Resistor for liquid level measurement, R 2 ... Resistor for temperature compensation, I 1 , I 2 ... Constant current source, A 1
...Inverter, A2 ...Variable gain amplifier, A3
...Adder, 2...Liquid.
Claims (1)
測定用の第１の抵抗体と、 前記第１の抵抗体に比して充分大きい抵抗値を
有し、前記液体中に浸漬され前記第１の定電流よ
り小さい第２の定電流が供給される温度補償用の
第２の抵抗体と、 前記第１及び第２の抵抗体の端子電圧を入力電
圧として演算を行なう演算回路とを備え、 前記第２の抵抗体の抵抗値及び第２の定電流は
前記第２の抵抗体の端子電圧が液面レベルに依存
しないように夫々設定され、当該端子電圧を第１
の抵抗体の端子電圧に対する温度補償用電圧とし
、前記演算回路から温度補償された前記液体の液
面レベルに対応した出力を得るようにしたことを
特徴とする液面レベル測定装置。[Claims for Utility Model Registration] A first resistor for measurement that is immersed in a liquid and is supplied with a first constant current, and has a sufficiently larger resistance value than the first resistor. , a second resistor for temperature compensation which is immersed in the liquid and is supplied with a second constant current smaller than the first constant current; and terminal voltages of the first and second resistors are input voltages. and an arithmetic circuit that performs calculations as follows, the resistance value of the second resistor and the second constant current are respectively set so that the terminal voltage of the second resistor does not depend on the liquid level, voltage first
A liquid level measuring device, characterized in that the voltage is a temperature compensation voltage for a terminal voltage of a resistor, and an output corresponding to a temperature-compensated liquid level of the liquid is obtained from the arithmetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6424686U JPS62176729U (en) | 1986-04-30 | 1986-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6424686U JPS62176729U (en) | 1986-04-30 | 1986-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62176729U true JPS62176729U (en) | 1987-11-10 |
Family
ID=30900229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6424686U Pending JPS62176729U (en) | 1986-04-30 | 1986-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62176729U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546194A (en) * | 1978-09-26 | 1980-03-31 | Siemens Ag | Apparatus for measuring packing condition |
-
1986
- 1986-04-30 JP JP6424686U patent/JPS62176729U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5546194A (en) * | 1978-09-26 | 1980-03-31 | Siemens Ag | Apparatus for measuring packing condition |
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