GB1407380A - Measuring cell for dissolved gases - Google Patents
Measuring cell for dissolved gasesInfo
- Publication number
- GB1407380A GB1407380A GB29174A GB29174A GB1407380A GB 1407380 A GB1407380 A GB 1407380A GB 29174 A GB29174 A GB 29174A GB 29174 A GB29174 A GB 29174A GB 1407380 A GB1407380 A GB 1407380A
- Authority
- GB
- United Kingdom
- Prior art keywords
- membrane
- cathode
- electrolyte
- electrodes
- cell
- 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
- 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
- G01N27/403—Cells and electrode assemblies
- G01N27/404—Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid, e.g. Clark-type oxygen sensors
-
- 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
- G01N27/28—Electrolytic cell components
- G01N27/283—Means for supporting or introducing electrochemical probes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
1407380 Oxygen determining cell BBC BROWN BOVERI & CO Ltd 3 Jan 1974 [5 Jan 1973] 00291/74 Heading G1N A cell for determining the dissolved oxygen content of a flowing fluid comprises a gas permeable membrane 3, electrodes 7, 8, a receptacle 1 for electrolyte at least partially bounded by the membrane and containing the electrodes, and a conduit for the flowing fluid communicating with the receptacle through the membrane, the receptacle being disposed around the periphery of the conduit. The conduit carries fixing for incorporation into a pipe carrying the fluid and the membrane is not easily contaminated as it does not impede the fluid flow. Preferably membrane, electrodes and receptacle are all annular or tubular. The membrane 3 may form the conduit wall and be a porous material of ceramic, PTFE metal reinforced PTFE or sintered metal optionally coated with a diffusion controlling layer. Alternatively the wall may be perforated and support a membrane. The electrodes can be wire windings (8) meshes (7) perforated tubes, rings or coatings on the membrane, a sheath or a plastics support and may comprise sintered metal, oxide semi-conductor or porous carbon. The cathode 8 is preferably nearer the membrane and may cover only part thereof. The anode and cathode may be separated and supported by a plastics lattice 12 which divides the electrolyte into compartments, reducing the current load and drift per (subdivided) cell. The cathode may be shaped to support other dividing panels. The casing may be removable and is preferably coated so that it is gas tight. It may comprise a filling orifice or the electrolyte may be injected through a plastics casing. The oxygen is converted to hydroxide ions which determine the cell current which is measured. For some cells an external voltage is necessary; for others the electrochemical potential (galvanic voltage) between the electrodes is sufficient. Preferred combinations are:- Ag anode; Au cathode; KCl electrolyte; impressed voltage. Pb anode; Ag cathode; KOH electrolyte; galvanic voltage. Pb anode; Ag cathode; KHCO 3 electrolyte; galvanic voltage. Many modifications to the cell construction are shown.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732300417 DE2300417A1 (en) | 1973-01-05 | 1973-01-05 | MEASUREMENT SENSOR FOR RELEASED GASES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1407380A true GB1407380A (en) | 1975-09-24 |
Family
ID=5868349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29174A Expired GB1407380A (en) | 1973-01-05 | 1974-01-03 | Measuring cell for dissolved gases |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH559913A5 (en) |
| DE (1) | DE2300417A1 (en) |
| FR (1) | FR2213499B3 (en) |
| GB (1) | GB1407380A (en) |
| IT (1) | IT1003304B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065373A (en) * | 1976-04-26 | 1977-12-27 | Petrolite Corporation | Hydrogen patch cell |
| DE2923483A1 (en) * | 1979-06-09 | 1980-12-11 | Bosch Gmbh Robert | POLAROGRAPHIC PROBE FOR DETERMINING THE OXYGEN CONTENT IN GAS, ESPECIALLY IN EXHAUST GAS FROM COMBUSTION ENGINES |
-
1973
- 1973-01-05 DE DE19732300417 patent/DE2300417A1/en active Pending
-
1974
- 1974-01-02 FR FR7400014A patent/FR2213499B3/fr not_active Expired
- 1974-01-03 CH CH1874A patent/CH559913A5/xx not_active IP Right Cessation
- 1974-01-03 IT IT1903474A patent/IT1003304B/en active
- 1974-01-03 GB GB29174A patent/GB1407380A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2213499A1 (en) | 1974-08-02 |
| IT1003304B (en) | 1976-06-10 |
| CH559913A5 (en) | 1975-03-14 |
| DE2300417A1 (en) | 1974-07-11 |
| FR2213499B3 (en) | 1976-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |