GB1018192A - Electrolytic hygrometer cell - Google Patents
Electrolytic hygrometer cellInfo
- Publication number
- GB1018192A GB1018192A GB30901/62A GB3090162A GB1018192A GB 1018192 A GB1018192 A GB 1018192A GB 30901/62 A GB30901/62 A GB 30901/62A GB 3090162 A GB3090162 A GB 3090162A GB 1018192 A GB1018192 A GB 1018192A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rhodium
- electrodes
- platinum
- coated
- wires
- 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
- 229910052703 rhodium Inorganic materials 0.000 abstract 7
- 239000010948 rhodium Substances 0.000 abstract 7
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 abstract 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 6
- 229910052697 platinum Inorganic materials 0.000 abstract 3
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- -1 polychlorotrifluoroethylene Polymers 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000629 Rh alloy Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 229910052741 iridium Inorganic materials 0.000 abstract 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052762 osmium Inorganic materials 0.000 abstract 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 abstract 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
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
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/42—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
- G01N27/423—Coulometry
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (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
1,018,192. Measuring moisture content electrically. BECKMAN INSTRUMENTS Inc. Aug. 13, 1962 [Oct. 30, 1961], No. 30901/62. Heading G1N. The active portion of an electrode in an electrolytic hygrometer contains rhodium. In Fig. 1, helically-wound rhodium-containing wires 12, 14 are supported by insulating jacket 16, forming a long tube 10, and the exposed portions of the wires are coated with a hygroscopic substance, e.g. P 2 O 5 . The major portion of tube 10 is helically coiled and inserted in a stainless steel casing, then potted. The electrodes may consist of pure rhodium, an alloy of rhodium with platinum, iridium, or osmium, or alternatively only one electrode (the anode) may be of rhodium, the other being of platinum. In a modified construction the electrodes project slightly from the inner surface of the tube. This is achieved by wrapping a pair of rhodium electrodes separated by a pair of copper spacer windings round a mandrel and coating them with an insulating jacket. The copper wires are etched away after removal of the mandrel, and the inner surface is coated with P 2 O 5 as before. A similar device may be constructed with platinum electrodes which are then modified by passing a rhodium plating solution through the device while applying a direct voltage to the electrodes, one of which becomes coated with rhodium. Suitable insulating materials for jacket 16 are glass, polychlorotrifluoroethylene and polytetrafluoroethylene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US148442A US3223609A (en) | 1961-10-30 | 1961-10-30 | Hygrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1018192A true GB1018192A (en) | 1966-01-26 |
Family
ID=22525790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30901/62A Expired GB1018192A (en) | 1961-10-30 | 1962-08-13 | Electrolytic hygrometer cell |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3223609A (en) |
| DE (1) | DE1191136B (en) |
| GB (1) | GB1018192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343688A (en) * | 1979-11-22 | 1982-08-10 | U.S. Philips Corporation | Method of making humidity sensors |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3325378A (en) * | 1964-04-10 | 1967-06-13 | Beckman Instruments Inc | Electrochemical method and apparatus for measuring hydrogen content |
| US3450619A (en) * | 1966-05-24 | 1969-06-17 | Cambridge Instr Co Inc | Oxygen detector |
| US3449231A (en) * | 1966-06-22 | 1969-06-10 | Beckman Instruments Inc | Oxygen sensor with rhodium cathode |
| US3954590A (en) * | 1972-08-18 | 1976-05-04 | E. I. Du Pont De Nemours And Company | Iridium thin ribbon electrodes for electrochemical cells |
| FR2341859A1 (en) * | 1976-02-18 | 1977-09-16 | Radiotechnique Compelec | PROBE FOR THE SELECTIVE DETECTION OF VAPORS, ESPECIALLY FOR THE DETECTION OF WATER VAPOR |
| US4076596A (en) * | 1976-10-07 | 1978-02-28 | Leeds & Northrup Company | Apparatus for electrolytically determining a species in a fluid and method of use |
| US4269683A (en) * | 1978-06-19 | 1981-05-26 | National Research Development Corporation | Electrochemical measuring system |
| US4280885A (en) * | 1979-11-09 | 1981-07-28 | Savery James W | Method of and apparatus for active electro-chemical water and similar environmental contaminant elimination in semi-conductor and other electronic and electrical devices and the like |
| US4449396A (en) * | 1982-03-01 | 1984-05-22 | Carrier Corporation | Probe for measuring electrical conductance |
| DE3504498A1 (en) * | 1985-02-09 | 1986-08-14 | Drägerwerk AG, 2400 Lübeck | GAS SENSOR WITH SEVERAL SENSOR ELEMENTS |
| US4990236A (en) * | 1988-02-08 | 1991-02-05 | Rosemount Inc. | Thin film moisture sensing element |
| WO1989007264A1 (en) * | 1988-02-08 | 1989-08-10 | Rosemount Inc. | Thin film moisture sensing elements and process for the manufacture thereof |
| US5225065A (en) * | 1990-10-03 | 1993-07-06 | Meeco, Inc. | Epoxy-less low-level moisture measurement system and method |
| US5589085A (en) * | 1995-08-04 | 1996-12-31 | Meeco, Incorporated | Process of manufacturing a detecting unit for an electrolytic cell with thin film electrodes |
| JP2002116172A (en) * | 2000-10-10 | 2002-04-19 | Ngk Spark Plug Co Ltd | Humidity sensor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3021482A (en) * | 1962-02-13 | estes | ||
| US2719797A (en) * | 1950-05-23 | 1955-10-04 | Baker & Co Inc | Platinizing tantalum |
| US2863729A (en) * | 1953-02-27 | 1958-12-09 | Harold F Mcduffie | Combination of hydrogen and oxygen |
| NL83950C (en) * | 1954-02-15 | |||
| US2830945A (en) * | 1955-05-03 | 1958-04-15 | Du Pont | Apparatus for water determination |
| US2934693A (en) * | 1957-09-09 | 1960-04-26 | Phillips Petroleum Co | Water analyzer |
| US3023085A (en) * | 1960-03-30 | 1962-02-27 | John P Mcbride | Method of combining hydrogen and oxygen |
-
1961
- 1961-10-30 US US148442A patent/US3223609A/en not_active Expired - Lifetime
-
1962
- 1962-08-13 GB GB30901/62A patent/GB1018192A/en not_active Expired
- 1962-10-23 DE DEB69345A patent/DE1191136B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343688A (en) * | 1979-11-22 | 1982-08-10 | U.S. Philips Corporation | Method of making humidity sensors |
Also Published As
| Publication number | Publication date |
|---|---|
| US3223609A (en) | 1965-12-14 |
| DE1191136B (en) | 1965-04-15 |
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