JPH0277635U - - Google Patents
Info
- Publication number
- JPH0277635U JPH0277635U JP15662988U JP15662988U JPH0277635U JP H0277635 U JPH0277635 U JP H0277635U JP 15662988 U JP15662988 U JP 15662988U JP 15662988 U JP15662988 U JP 15662988U JP H0277635 U JPH0277635 U JP H0277635U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- operational amplifier
- temperature compensating
- series
- heat dissipation
- 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
- 230000017525 heat dissipation Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
第１図は本考案に係る実施例を示す図、第２図
は従来の構成を示す図である。
Ｒｏ……レベル測定用抵抗体、Ｒｔ……温度補
償用抵抗体、Ｒｓ……抵抗、ｏｐ……演算増幅器
。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional configuration. R o : Level measurement resistor, R t : Temperature compensation resistor, R s : Resistor, op: Operational amplifier.
Claims (1)
生じる電圧を反転入力に印加する演算増幅器と、
前記抵抗体と演算増幅器間に直列接続された温度
補償用抵抗体とを備え、前記両抵抗体を液体の液
面まで浸漬させ、演算増幅器の出力より該液面レ
ベルを検出する放熱式レベルセンサであつて、 前記レベル測定用抵抗体と温度補償用抵抗体と
の温度係数を等しくすると共に、前記温度補償用
抵抗体に温度係数が前記各抵抗体に比して相対的
に小さい抵抗を直列接続したことを特徴とする放
熱式レベルセンサ。[Claims for Utility Model Registration] A heated level measuring resistor, an operational amplifier that applies the voltage generated across the resistor to its inverting input,
A heat dissipation type level sensor comprising a temperature compensating resistor connected in series between the resistor and an operational amplifier, the resistor being immersed up to the liquid level, and detecting the liquid level from the output of the operational amplifier. The level measuring resistor and the temperature compensating resistor have equal temperature coefficients, and the temperature compensating resistor is connected in series with a resistor whose temperature coefficient is relatively smaller than that of each resistor. A heat dissipation type level sensor characterized by being connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15662988U JPH0277635U (en) | 1988-12-02 | 1988-12-02 | |
| US07/444,341 US5007288A (en) | 1988-12-02 | 1989-12-01 | Heat-radiation type level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15662988U JPH0277635U (en) | 1988-12-02 | 1988-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0277635U true JPH0277635U (en) | 1990-06-14 |
Family
ID=31435339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15662988U Pending JPH0277635U (en) | 1988-12-02 | 1988-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0277635U (en) |
-
1988
- 1988-12-02 JP JP15662988U patent/JPH0277635U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0277635U (en) | ||
| JPH0342527U (en) | ||
| JPH0233326U (en) | ||
| NO891695L (en) | ELECTRONIC CIRCUIT DEVICE. | |
| SU430277A1 (en) | ||
| JPH062126Y2 (en) | Thermocouple temperature measuring device | |
| JPS6351469U (en) | ||
| JPH03115827U (en) | ||
| JPH0312144U (en) | ||
| JPS6279156U (en) | ||
| JPS6163181U (en) | ||
| JPS6161439U (en) | ||
| SU857739A1 (en) | Device for measuring temperature difference | |
| JPS6192838U (en) | ||
| SU574851A1 (en) | Voltage-code converter | |
| JPS6111837Y2 (en) | ||
| SU517814A1 (en) | Force measuring device | |
| JPS5839577U (en) | Temperature and offset voltage compensation circuit for Hall effect converter | |
| SU1401258A2 (en) | Strain-gauge transducer | |
| JPS6123793Y2 (en) | ||
| JPH02118846U (en) | ||
| JPH0374316U (en) | ||
| JPS62176730U (en) | ||
| JPH0279467U (en) | ||
| JPS6174848U (en) |