HU185235B - Temperature-compensated electric signal transducer for measuring humidity - Google Patents
Temperature-compensated electric signal transducer for measuring humidity Download PDFInfo
- Publication number
- HU185235B HU185235B HU19581A HU19581A HU185235B HU 185235 B HU185235 B HU 185235B HU 19581 A HU19581 A HU 19581A HU 19581 A HU19581 A HU 19581A HU 185235 B HU185235 B HU 185235B
- Authority
- HU
- Hungary
- Prior art keywords
- temperature
- oscillator
- measuring
- moisture
- resistance
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/045—Circuits
- G01N27/046—Circuits provided with temperature compensation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Elektrischer Feuchtegeber mit Temperaturkompensation. Anwendungsgebiet ist die Analysenmesstechnik. In dem erfindungsgemaessen elektrischen Feuchtegeber wird der Einfluss der Temperatur des Messobjektes auf den Feuchtemesswert fehlerfrei kompensiert, ohne ein Temperaturmesselement mit seinen bekannten Nachteilen einsetzen zu muessen. Das wird damit erreicht, dass ein oder mehrere dielektrische Feuchtemesselemente in die Kette eines Phasenschieberoszillators eingesetzt werden. Damit entsteht im Oszillator ein feuchteabhaengiges frequenzanaloges elektrisches Signal. Bei Temperaturaenderungen des Messobjektes veraendern sich dessen Blind- und Wirkwiderstand gleichsinnig. Diese gleichsinnige Wirkung der Temperatur auf diese beiden Widerstandsarten wird im Phasenschieberoszillator in eine gegensinnige Wirkung auf die Oszillatorfrequenz umgewandelt.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD21995480A DD157979A3 (de) | 1980-03-27 | 1980-03-27 | Temperaturkompensierter elektrischer feuchtegeber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HU185235B true HU185235B (en) | 1984-12-28 |
Family
ID=5523351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HU19581A HU185235B (en) | 1980-03-27 | 1981-01-29 | Temperature-compensated electric signal transducer for measuring humidity |
Country Status (3)
| Country | Link |
|---|---|
| DD (1) | DD157979A3 (de) |
| DE (1) | DE3100057A1 (de) |
| HU (1) | HU185235B (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10239264A (ja) * | 1997-02-25 | 1998-09-11 | Sanriki Kogyo Kk | 電気抵抗式湿度センサ |
| GB9704064D0 (en) * | 1997-02-27 | 1997-04-16 | Aromascan Plc | Electronic circuits |
-
1980
- 1980-03-27 DD DD21995480A patent/DD157979A3/de not_active IP Right Cessation
-
1981
- 1981-01-02 DE DE19813100057 patent/DE3100057A1/de not_active Withdrawn
- 1981-01-29 HU HU19581A patent/HU185235B/hu unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD157979A3 (de) | 1982-12-22 |
| DE3100057A1 (de) | 1981-12-17 |
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