JPS6116927B2 - - Google Patents
Info
- Publication number
- JPS6116927B2 JPS6116927B2 JP3103980A JP3103980A JPS6116927B2 JP S6116927 B2 JPS6116927 B2 JP S6116927B2 JP 3103980 A JP3103980 A JP 3103980A JP 3103980 A JP3103980 A JP 3103980A JP S6116927 B2 JPS6116927 B2 JP S6116927B2
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- signal
- frequency
- dew point
- synchronous detector
- 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
Links
- 239000013078 crystal Substances 0.000 claims description 19
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010408 sweeping Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
- G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0253—Condensation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02845—Humidity, wetness
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)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3103980A JPS56126738A (en) | 1980-03-12 | 1980-03-12 | Cooling-type dew-point meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3103980A JPS56126738A (en) | 1980-03-12 | 1980-03-12 | Cooling-type dew-point meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56126738A JPS56126738A (en) | 1981-10-05 |
| JPS6116927B2 true JPS6116927B2 (fr) | 1986-05-02 |
Family
ID=12320341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3103980A Granted JPS56126738A (en) | 1980-03-12 | 1980-03-12 | Cooling-type dew-point meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126738A (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126311A (en) * | 1998-11-02 | 2000-10-03 | Claud S. Gordon Company | Dew point sensor using mems |
| KR100926461B1 (ko) | 2007-12-14 | 2009-11-13 | 한국표준과학연구원 | 수정미소저울 노점센서를 이용한 저온에서의 상점과 이슬점구별 측정 방법 |
-
1980
- 1980-03-12 JP JP3103980A patent/JPS56126738A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56126738A (en) | 1981-10-05 |
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