CA1091987A - Hygrometre - Google Patents

Hygrometre

Info

Publication number
CA1091987A
CA1091987A CA291,278A CA291278A CA1091987A CA 1091987 A CA1091987 A CA 1091987A CA 291278 A CA291278 A CA 291278A CA 1091987 A CA1091987 A CA 1091987A
Authority
CA
Canada
Prior art keywords
chamber
indicator
moisture
soil
chambers
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.)
Expired
Application number
CA291,278A
Other languages
English (en)
Inventor
Bernard Slepak
John E. Tucker
William P. Heinrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of CA1091987A publication Critical patent/CA1091987A/fr
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/16—Control of watering
    • A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/222—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating moisture content

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
CA291,278A 1976-11-24 1977-11-21 Hygrometre Expired CA1091987A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74473876A 1976-11-24 1976-11-24
US744,738 1976-11-24

Publications (1)

Publication Number Publication Date
CA1091987A true CA1091987A (fr) 1980-12-23

Family

ID=24993810

Family Applications (1)

Application Number Title Priority Date Filing Date
CA291,278A Expired CA1091987A (fr) 1976-11-24 1977-11-21 Hygrometre

Country Status (7)

Country Link
JP (1) JPS5374095A (fr)
BE (1) BE861156A (fr)
CA (1) CA1091987A (fr)
DE (1) DE2752508C2 (fr)
FR (1) FR2372433A1 (fr)
GB (1) GB1556577A (fr)
NL (1) NL189480C (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911151A1 (de) * 1989-04-06 1990-10-11 Joachim Schmidt Messgeraet zur bestimmung von bodeneigenschaften
FR2665049B1 (fr) * 1990-07-26 1993-12-03 Michel Chamoulaud Procede pour determiner la quantite d'eau necessaire a un substrat de culture et bac de culture adaptee a son utilisation.
GB9019377D0 (en) * 1990-09-05 1990-10-17 Hettiaratchi Daniel B P Irrigation sensor device
DE102009019901A1 (de) * 2009-05-04 2011-03-03 Pawel Alexander Adamczyk Gerät zur Messung der Feuchtigkeit von Pflanzenerde
JP5692826B2 (ja) * 2013-06-06 2015-04-01 キャビノチェ株式会社 土壌用水分インジケータ
CN103776982B (zh) * 2014-01-27 2015-09-16 甘肃省交通科学研究院有限公司 质量式岩土干湿循环实验装置及实验方法
DE102014226204A1 (de) * 2014-12-17 2016-06-23 Siemens Aktiengesellschaft Verfahren und Anordnung zum Überwachen einerEinrichtung auf innere Zustandsänderungen
CN105784703B (zh) * 2014-12-24 2018-07-20 中国科学院大连化学物理研究所 一种不溶性纳米湿度指示材料及其制备与应用
CN105548472A (zh) * 2015-12-10 2016-05-04 廖健恒 一种用于室内的湿度监测系统
WO2019050037A1 (fr) * 2017-09-08 2019-03-14 キャビノチェ株式会社 Indicateur d'humidité du sol, unité de détection d'eau utilisée dans l'indicateur d'humidité du sol, boîtier de corps, procédé de fabrication d'unité de détection d'eau et procédé de fabrication d'indicateur d'humidité du sol

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716338A (en) * 1954-04-08 1955-08-30 Welford C Blinn Button type package humidity indicator
US2787238A (en) * 1955-04-04 1957-04-02 Richard W Luce Hygrometric indicator
US3019638A (en) * 1959-11-02 1962-02-06 William F Klein Moisture indicating device
US3702755A (en) * 1971-07-21 1972-11-14 Walter E Palmer Moisture indicator for plants
US3951098A (en) * 1975-02-12 1976-04-20 Enviro-Gro, Inc. House plant water content indicator

Also Published As

Publication number Publication date
JPS6339865B2 (fr) 1988-08-08
DE2752508A1 (de) 1978-06-01
JPS5374095A (en) 1978-07-01
DE2752508C2 (de) 1987-01-22
NL189480C (nl) 1993-04-16
GB1556577A (en) 1979-11-28
FR2372433A1 (fr) 1978-06-23
NL7712911A (nl) 1978-05-26
FR2372433B3 (fr) 1980-08-14
BE861156A (fr) 1978-03-16

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Legal Events

Date Code Title Description
MKEX Expiry