GB1020966A - Hygrometer probe - Google Patents
Hygrometer probeInfo
- Publication number
- GB1020966A GB1020966A GB4122664A GB4122664A GB1020966A GB 1020966 A GB1020966 A GB 1020966A GB 4122664 A GB4122664 A GB 4122664A GB 4122664 A GB4122664 A GB 4122664A GB 1020966 A GB1020966 A GB 1020966A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strain
- hairs
- probe
- gauge assembly
- elements
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
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)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
1,020,966. Measuring electrically. ESTABLISSEMENTS JULES RICHARDS. Oct. 9, 1964 [Oct. 11, 1963], No. 41226/64. Heading G1N. In the hygrometer probe shown, a plurality of filiform hygroscopic elements 15, e.g. human hairs, and a strain-gauge assembly 3 are connected together at one end by a bracket 14, the other ends of the hairs and the strain-gauge assembly being fixed to the body 1 of the probe, so that changes in length of the hairs consequent upon variations of humidity vary the strain in, and therefore the resistance of, the elements 4, 5 of the strain-gauge assembly. The initial tension of the hairs 15 is adjusted by a micrometer screw 21. A thermistor 51 may also be housed in the probe to measure ambient temperature. The probe comprises a hood 33 apertured at 34 to allow access to the humidity- and temperature-sensitive elements. The straingauges 4, 5 and thermistor 51 are connected into respective measuring circuits 45, 57, e.g. Wheatstone bridges, the indications of which may be combined, mentally or automatically, to provide an indication of dew-point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE638519 | 1963-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020966A true GB1020966A (en) | 1966-02-23 |
Family
ID=3845537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4122664A Expired GB1020966A (en) | 1963-10-11 | 1964-10-09 | Hygrometer probe |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1266540B (en) |
| GB (1) | GB1020966A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1781153A (en) * | 1926-12-02 | 1930-11-11 | Atlantic Prec Instr Company | Means for measuring moisture content of sheet material |
| US2280241A (en) * | 1938-03-31 | 1942-04-21 | Brown Instr Co | Humidity measuring apparatus |
| US2961164A (en) * | 1957-07-15 | 1960-11-22 | Taylor Instrument Co | Humidity transmitter or relay |
-
1964
- 1964-10-08 DE DE1964E0027912 patent/DE1266540B/en active Pending
- 1964-10-09 GB GB4122664A patent/GB1020966A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1266540B (en) | 1968-04-18 |
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