CA1301477C - Hygrometre a point de rosee, du type piezoelectrique - Google Patents

Hygrometre a point de rosee, du type piezoelectrique

Info

Publication number: CA1301477C
Authority: CA; Canada
Prior art keywords: crystal; piezoelectric quartz; temperature; frequency; dew point
Prior art date: 1989-09-13
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

CA 611170

Other languages

English (en)

Inventor

Pierre Michaud

Michel Letourneau

Michel English

Claude Porlier

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.)

1989-09-13

Filing date

1989-09-13

Publication date

1992-05-26

1989-09-13 Application filed by Individual filed Critical Individual

1989-09-13 Priority to CA 611170 priority Critical patent/CA1301477C/fr

1992-05-26 Application granted granted Critical

1992-05-26 Publication of CA1301477C publication Critical patent/CA1301477C/fr

Status Expired legal-status Critical Current

Links

239000013078 crystal Substances 0.000 claims abstract description 37
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
238000009833 condensation Methods 0.000 claims abstract description 14
230000005494 condensation Effects 0.000 claims abstract description 14
239000010453 quartz Substances 0.000 claims abstract description 7
VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
238000000034 method Methods 0.000 claims description 6
239000007789 gas Substances 0.000 claims description 5
238000001816 cooling Methods 0.000 claims description 3
238000012544 monitoring process Methods 0.000 claims description 3
238000010438 heat treatment Methods 0.000 claims description 2
230000010355 oscillation Effects 0.000 claims description 2
239000012530 fluid Substances 0.000 claims 5
238000011109 contamination Methods 0.000 claims 3
230000001276 controlling effect Effects 0.000 claims 2
239000003570 air Substances 0.000 claims 1
239000012080 ambient air Substances 0.000 claims 1
230000008021 deposition Effects 0.000 claims 1
230000001105 regulatory effect Effects 0.000 claims 1
238000007789 sealing Methods 0.000 description 7
238000005259 measurement Methods 0.000 description 5
239000011248 coating agent Substances 0.000 description 4
238000000576 coating method Methods 0.000 description 4
230000003287 optical effect Effects 0.000 description 4
238000010586 diagram Methods 0.000 description 2
239000012535 impurity Substances 0.000 description 2
SUBDBMMJDZJVOS-UHFFFAOYSA-N 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole Chemical compound N=1C2=CC(OC)=CC=C2NC=1S(=O)CC1=NC=C(C)C(OC)=C1C SUBDBMMJDZJVOS-UHFFFAOYSA-N 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
239000000463 material Substances 0.000 description 1
230000000007 visual effect Effects 0.000 description 1

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
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
- G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface

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)

CA 611170 1989-09-13 1989-09-13 Hygrometre a point de rosee, du type piezoelectrique Expired CA1301477C (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA 611170 CA1301477C (fr)	1989-09-13	1989-09-13	Hygrometre a point de rosee, du type piezoelectrique

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA 611170 CA1301477C (fr)	1989-09-13	1989-09-13	Hygrometre a point de rosee, du type piezoelectrique

Publications (1)

Publication Number	Publication Date
CA1301477C true CA1301477C (fr)	1992-05-26

Family

ID=4140587

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 611170 Expired CA1301477C (fr)	1989-09-13	1989-09-13	Hygrometre a point de rosee, du type piezoelectrique

Country Status (1)

Country	Link
CA (1)	CA1301477C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2024100364A1 (fr) *	2022-11-10	2024-05-16	Centre National d'Études Spatiales	Appareil pour mesurer un taux d'humidité dans l'air

1989
- 1989-09-13 CA CA 611170 patent/CA1301477C/fr not_active Expired

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2024100364A1 (fr) *	2022-11-10	2024-05-16	Centre National d'Études Spatiales	Appareil pour mesurer un taux d'humidité dans l'air
FR3142006A1 (fr) *	2022-11-10	2024-05-17	Centre National d'Études Spatiales	Appareil pour mesurer un taux d’humidité dans l’air

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Legal Events

Date	Code	Title	Description
1994-11-26	MKLA	Lapsed