JPH0363854U - - Google Patents

Info

Publication number
JPH0363854U
JPH0363854U JP1989124036U JP12403689U JPH0363854U JP H0363854 U JPH0363854 U JP H0363854U JP 1989124036 U JP1989124036 U JP 1989124036U JP 12403689 U JP12403689 U JP 12403689U JP H0363854 U JPH0363854 U JP H0363854U
Authority
JP
Japan
Prior art keywords
specific heat
heat type
type moisture
moisture sensor
sensor
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
Application number
JP1989124036U
Other languages
English (en)
Other versions
JPH0650764Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989124036U priority Critical patent/JPH0650764Y2/ja
Priority to US07/589,593 priority patent/US5142901A/en
Priority to NL9002325A priority patent/NL9002325A/nl
Publication of JPH0363854U publication Critical patent/JPH0363854U/ja
Application granted granted Critical
Publication of JPH0650764Y2 publication Critical patent/JPH0650764Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

【図面の簡単な説明】
第１図は本考案の比熱式水分センサの説明図、
第２図は第１図におけるセラミツク製円柱部分の
斜視説明図、第３図は本考案の比熱式水分センサ
における基本回路説明図、第４図は本考案の比熱
式水分センサによりロツクウールの水分量を計測
する際の体積水分率（横軸）とセンサー起電力（
縦軸）の関係を示すグラフ、第５図は本考案の比
熱式水分センサにより黒ボク土の水分量を計測す
る際の体積水分率（横軸）とセンサー起電力（縦
軸）の関係を示すグラフ、第６図は水分量測定時
の測定時間（横軸）と使用電力（縦軸）の関係を
示すグラフである。 １０……比熱式水分センサ、２０……セラミツ
ク製円柱、２１……中空部、２２……中空部、３
０……ニクロム線（ヒーター）、４０……リード
線、５１……温度計測用センサー、５２……温度
補償用センサー、６０……合成樹脂容器、６１…
…尖鋭部、Ｅ……電源、Ｈ……ニクロム線（ヒー
ター）、Ｖ ＯＵＴ……センサー出力電圧、ＳＣ
……温度計測用センサー、Ｓ ＣＲ……温度補償
用センサー。
補正 平２．１０．２４ 実用新案登録請求の範囲を次のように補正する
。
【実用新案登録請求の範囲】 (1) 長手方向に二つの中空部を有する円柱の外
周に、ヒーター線を巻回すると共に、前記二つの
中空部にリード線を連通し、前記円柱内のリード
線に温度計測用センサーを設けたものを、耐水性
合成樹脂にて一体成形して構成したことを特徴と
する比熱式水分センサ。 (2) 先端を先鋭状に形成したことを特徴とする
請求項(1)に記載の比熱式水分センサ。 (3) 円柱をセラミツクで形成したことを特徴と
する請求項(1)に記載の比熱式水分センサ。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 長手方向に二つの中空部を有する円柱の外
    周に、ヒーター用のニクロム線を捲回すると共に
    、前記二つの中空部にリード線を連通し、前記円
    柱内のリード線に温度計測用センサーを設けたも
    のを、耐水性合成樹脂にて一体成形して構成した
    ことを特徴とする比熱式水分センサ。 (2) 先端を先鋭状に形成したことを特徴とする
    請求項(1)に記載の比熱式水分センサ。 (3) 円柱をセラミツクで形成したことを特徴と
    する請求項(1)に記載の比熱式水分センサ。
JP1989124036U 1989-10-25 1989-10-25 比熱式水分センサ Expired - Fee Related JPH0650764Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1989124036U JPH0650764Y2 (ja) 1989-10-25 1989-10-25 比熱式水分センサ
US07/589,593 US5142901A (en) 1989-10-25 1990-09-28 Specific heat based moisture sensor
NL9002325A NL9002325A (nl) 1989-10-25 1990-10-24 Vochtsensor gebaseerd op specifieke warmte.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989124036U JPH0650764Y2 (ja) 1989-10-25 1989-10-25 比熱式水分センサ

Publications (2)

Publication Number Publication Date
JPH0363854U true JPH0363854U (ja) 1991-06-21
JPH0650764Y2 JPH0650764Y2 (ja) 1994-12-21

Family

ID=14875438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989124036U Expired - Fee Related JPH0650764Y2 (ja) 1989-10-25 1989-10-25 比熱式水分センサ

Country Status (3)

Country Link
US (1) US5142901A (ja)
JP (1) JPH0650764Y2 (ja)
NL (1) NL9002325A (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5859536A (en) * 1997-01-08 1999-01-12 Oliver Haugen Moisture sensor having low sensitivity to conductance changes
WO1998052027A1 (de) * 1997-05-15 1998-11-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Sensor zur bestimmung des feuchtegehalts
US6104011A (en) * 1997-09-04 2000-08-15 Watlow Electric Manufacturing Company Sheathed thermocouple with internal coiled wires
ATE469349T1 (de) * 1999-04-22 2010-06-15 Ebro Electronic Gmbh & Co Kg Vorrichtung zum messen des zustands von ölen und fetten
JP4188287B2 (ja) * 2004-07-15 2008-11-26 三井金属鉱業株式会社 熱式センサ及びそれを用いた測定装置
EP1621874A1 (en) * 2004-07-19 2006-02-01 Matsuo Electric Co., Ltd. Moisture detector
JP4774409B2 (ja) * 2004-12-16 2011-09-14 アトランティック ビジネス センター オブ エクセレンス アンド コマーシャライゼイション オブ イノベーション リミテッド 材料をモニタする方法及び装置
DE102010030131B4 (de) * 2010-06-15 2011-12-29 Dow Deutschland Anlagengesellschaft Mbh Handgerät sowie Verfahren zum Untersuchen eines korrosionsanfälligen metallischen Gegenstands auf Korrosion
KR101496044B1 (ko) * 2013-11-04 2015-02-25 주식회사 현대케피코 산소 센서 제어장치 및 방법
US20170219552A1 (en) * 2016-02-02 2017-08-03 Reinoud Jacob HARTMAN Method and apparatus for determining the rate of sap-content variation in living plants, and relating that to soil water tension, and transmitting the collected information
DE102018113671B4 (de) * 2018-06-08 2021-03-18 Hochschule Kaiserslautern Verfahren zur Ermittlung des Feuchtegehalts eines Feuchtigkeit aufnehmenden Materials
CN110308249B (zh) * 2019-07-12 2021-12-10 中科同帜半导体(江苏)有限公司 一种湿度传感器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63120245A (ja) * 1986-11-08 1988-05-24 Norin Suisansyo Nogyo Kankyo Gijutsu Kenkyusho 土壌熱伝導率表示装置
JPH01142852U (ja) * 1988-03-25 1989-09-29

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718141A (en) * 1952-01-25 1955-09-20 Lorenzo A Richards Electro-thermal element for measuring moisture in porous media
US4018624A (en) * 1973-08-22 1977-04-19 Engelhard Minerals & Chemicals Corporation Thermocouple structure and method of manufacturing same
US4020417A (en) * 1975-11-26 1977-04-26 Turf Service Laboratories, Inc. Soil moisture indicator device
US4238957A (en) * 1977-07-04 1980-12-16 Commonwealth Scientific And Industrial Research Organization Pyrometric sheath and process
US4165633A (en) * 1978-02-09 1979-08-28 Motorola Process Control Inc. System for measuring moisture content
US4242906A (en) * 1979-09-04 1981-01-06 Wescor, Inc. Thermocouple-equipped, soil probe with removable protective shield
US4399404A (en) * 1981-02-23 1983-08-16 Resh Roy E Moisture tester with probe
US4453401A (en) * 1982-03-12 1984-06-12 The United States Of America As Represented By The Secretary Of The Air Force Pressure sensor and soil stress isolation filter arrangement in a pore pressure probe
US4445788A (en) * 1982-04-30 1984-05-01 The Board Of Regents Of The University Of Nebraska Soil probe and method of obtaining moisture, temperature and root distribution of a soil profile
US4531087A (en) * 1982-06-09 1985-07-23 Larson Glenn F Electrical sensor for measuring moisture in landscape and agricultural soils
JPS5972784A (ja) * 1982-10-19 1984-04-24 Ishikawajima Harima Heavy Ind Co Ltd シ−ス型熱電対
US4527909A (en) * 1983-09-23 1985-07-09 Conax Corporation Sealed temperature probe
US4673306A (en) * 1984-07-11 1987-06-16 Dataproducts Corporation Magnetic paper clamp
US4614442A (en) * 1985-01-18 1986-09-30 Poncy George W Thermometer sheath package for electronic thermometers
US4721534A (en) * 1985-09-12 1988-01-26 System Planning Corporation Immersion pyrometer
JPS6347644A (ja) * 1986-08-14 1988-02-29 Yazaki Corp 水分センサー
US4845978A (en) * 1987-03-03 1989-07-11 Whitford Darryl R Determining moisture content of a medium
US4934831A (en) * 1989-03-20 1990-06-19 Claud S. Gordon Company Temperature sensing device
JP3170960B2 (ja) * 1993-06-11 2001-05-28 日産自動車株式会社 表示装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63120245A (ja) * 1986-11-08 1988-05-24 Norin Suisansyo Nogyo Kankyo Gijutsu Kenkyusho 土壌熱伝導率表示装置
JPH01142852U (ja) * 1988-03-25 1989-09-29

Also Published As

Publication number Publication date
US5142901A (en) 1992-09-01
NL9002325A (nl) 1991-05-16
JPH0650764Y2 (ja) 1994-12-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees