JPH0461029U - - Google Patents
Info
- Publication number
- JPH0461029U JPH0461029U JP10469690U JP10469690U JPH0461029U JP H0461029 U JPH0461029 U JP H0461029U JP 10469690 U JP10469690 U JP 10469690U JP 10469690 U JP10469690 U JP 10469690U JP H0461029 U JPH0461029 U JP H0461029U
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- thermistor
- ceramic substrate
- curie point
- point temperature
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
添付図面は本考案の実施例を示し、第１図は第
一実施例の液面レベルセンサＳの正面断面図、第
２図は第二実施例の液面レベルセンサＳの正面断
面図、第３図は製造工程図である。
１，１１……セラミツク基体、２，１２……サ
ーミスタ素子、４，１４……ヒータ用抵抗体、６
，１６……負荷抵抗、７，１７……電圧計、３，
１３……導電路、Ｓ……液面レベルセンサ。
The accompanying drawings show embodiments of the present invention; FIG. 1 is a front sectional view of a liquid level sensor S according to a first embodiment, FIG. 2 is a front sectional view of a liquid level sensor S according to a second embodiment, and FIG. Figure 3 is a manufacturing process diagram. 1, 11... Ceramic base, 2, 12... Thermistor element, 4, 14... Resistor for heater, 6
, 16...Load resistance, 7, 17...Voltmeter, 3,
13... Conductive path, S... Liquid level sensor.
Claims (1)
、キユリー点温度以上で急峻な抵抗変化を生ずる
サーミスタ素子を上下方向に所定間隔で複数個配
設し、かつ該セラミツク基体表面のサーミスタ素
子群の近傍に、各サーミスタ素子をキユーリ点温
度以上の温度にするためのヒータ用抵抗体を配設
し、各サーミスタ素子に自己発熱させない程度の
電流を流して、その抵抗値変化により液面レベル
を検知するようにしたことを特徴とする液面レベ
ルセンサ。 A plurality of thermistor elements that produce a steep resistance change above the Curie point temperature are arranged at predetermined intervals in the vertical direction on a required conductive path formed on the surface of the ceramic substrate, and in the vicinity of the group of thermistor elements on the surface of the ceramic substrate, A heater resistor is installed to raise each thermistor element to a temperature higher than the Curie point temperature, and current is passed through each thermistor element to an extent that does not cause self-heating, and the liquid level is detected by the change in resistance value. A liquid level sensor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990104696U JPH0710260Y2 (en) | 1990-10-03 | 1990-10-03 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990104696U JPH0710260Y2 (en) | 1990-10-03 | 1990-10-03 | Liquid level sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0461029U true JPH0461029U (en) | 1992-05-26 |
| JPH0710260Y2 JPH0710260Y2 (en) | 1995-03-08 |
Family
ID=31850082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990104696U Expired - Lifetime JPH0710260Y2 (en) | 1990-10-03 | 1990-10-03 | Liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710260Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156272U (en) * | 1982-04-14 | 1983-10-19 | 株式会社芝浦電子製作所 | thermistor sensor |
| JPS6039510A (en) * | 1983-08-12 | 1985-03-01 | Ngk Insulators Ltd | Liquid level detecting element |
| JPS62102120A (en) * | 1985-10-30 | 1987-05-12 | Honda Motor Co Ltd | Liquid level detecting device |
-
1990
- 1990-10-03 JP JP1990104696U patent/JPH0710260Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58156272U (en) * | 1982-04-14 | 1983-10-19 | 株式会社芝浦電子製作所 | thermistor sensor |
| JPS6039510A (en) * | 1983-08-12 | 1985-03-01 | Ngk Insulators Ltd | Liquid level detecting element |
| JPS62102120A (en) * | 1985-10-30 | 1987-05-12 | Honda Motor Co Ltd | Liquid level detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0710260Y2 (en) | 1995-03-08 |
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