GB1423725A - Apparatus for determining oxygen demand - Google Patents
Apparatus for determining oxygen demandInfo
- Publication number
- GB1423725A GB1423725A GB1562973A GB1562973A GB1423725A GB 1423725 A GB1423725 A GB 1423725A GB 1562973 A GB1562973 A GB 1562973A GB 1562973 A GB1562973 A GB 1562973A GB 1423725 A GB1423725 A GB 1423725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- chamber
- oxygen demand
- current
- test chamber
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 5
- 229910052760 oxygen Inorganic materials 0.000 title abstract 5
- 239000001301 oxygen Substances 0.000 title abstract 5
- 238000005868 electrolysis reaction Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biomedical Technology (AREA)
- Emergency Medicine (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
1423725 Determination of oxygen demand J M VOITH GmbH 2 April 1973 [1 April 1972] 15629/73 Heading G1B Oxygen demand is determined using apparatus comprising a test chamber in which the oxygenconsuming process is to take place, (see for example the apparatus of 989561), means for triggering the supply of an oxygen stream to the chamber, the triggering means being responsive to the pressure in the chamber, a motor and digital counting and/or continuous recording means arranged to be driven directly by the motor, the triggering means being arranged to cause operation of the motor during each period of oxygen supply to the chamber. In the apparatus shown, pressureactuated switch 5 is connected to the test chamber (not shown) and closes to switch on current through an electrolysis cell 13 when the pressure in the test chamber drops to a predetermined value. There is simultaneously switched on motor 14 which controls operation of dotted line recorder 18 and digital counter 19. In another embodiment, Fig. 3 (not shown) the electrolysis current varies and the speed of rotation of motor 14 is proportional to the current.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722216006 DE2216006C3 (en) | 1972-04-01 | Device for determining the oxygen demand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1423725A true GB1423725A (en) | 1976-02-04 |
Family
ID=5840862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1562973A Expired GB1423725A (en) | 1972-04-01 | 1973-04-02 | Apparatus for determining oxygen demand |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2179426A5 (en) |
| GB (1) | GB1423725A (en) |
| IT (1) | IT980061B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS164056B1 (en) * | 1973-06-12 | 1975-11-07 |
-
1973
- 1973-03-30 IT IT4914373A patent/IT980061B/en active
- 1973-04-02 FR FR7311775A patent/FR2179426A5/fr not_active Expired
- 1973-04-02 GB GB1562973A patent/GB1423725A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2216006A1 (en) | 1973-10-11 |
| DE2216006B2 (en) | 1976-06-16 |
| IT980061B (en) | 1974-09-30 |
| FR2179426A5 (en) | 1973-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19930401 |